Astronomy
-
Upload
rajah-merrill -
Category
Documents
-
view
18 -
download
0
description
Transcript of Astronomy
![Page 1: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/1.jpg)
04/19/23 1
AstronomyMr. King
![Page 2: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/2.jpg)
04/19/23 2
Compare the surface of the moon with the surface of the earth. Earth’s atmosphere causes
erosion. Earth’s surface is smooth with
many changes. New surfaces are always being created by volcanoes, weather, and erosion.
Moon has little atmosphere. There is no erosion so the surface is rough and old.
1.
![Page 3: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/3.jpg)
04/19/23 3
Give a brief description of the moon’s history. Craters are very old. At one time, the moon went
through a volcanic period. Magma flowed through cracks and
filled craters. Dark areas on the moon (filled
craters) are called: maries
2.
![Page 4: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/4.jpg)
04/19/23 4
Describe three theories that may account for the origin of the moon.
Daughter Theory - moon was part of the earth.
Sister Theory - both were formed at the same time.
Capture Theory - Moon was traveling and was captured by the earth.
3.
![Page 5: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/5.jpg)
04/19/23 5
Describe the motions of the earth-moon system. Motion of the moon accounts for
the tides. Moon revolves around the earth
every 27 days. The moon rotates every 27 days
so that the same face of the moon points at the earth.
4.
![Page 6: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/6.jpg)
04/19/23 6
Describe the motions of the earth-moon system. Motion of the earth accounts for the tides. Moon revolves around the earth every 27 days. The moon rotates every 27 days so that the same face
of the moon points at the earth.
![Page 7: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/7.jpg)
04/19/23 7
Describe the motions of the earth-moon system. Motion of the earth accounts for the tides. Moon revolves around the earth every 27 days. The moon rotates every 27 days so that the same face
of the moon points at the earth.
![Page 8: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/8.jpg)
04/19/23 8
Describe the motions of the earth-moon system. Motion of the earth accounts for the tides. Moon revolves around the earth every 27 days. The moon rotates every 27 days so that the same face
of the moon points at the earth.
![Page 9: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/9.jpg)
04/19/23 9
Describe the motions of the earth-moon system. Motion of the earth accounts for the tides. Moon revolves around the earth every 27 days. The moon rotates every 27 days so that the same face
of the moon points at the earth.
![Page 10: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/10.jpg)
04/19/23 10
Describe the motions of the earth-moon system. Motion of the earth accounts for the tides. Moon revolves around the earth every 27 days. The moon rotates every 27 days so that the same face
of the moon points at the earth.
![Page 11: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/11.jpg)
04/19/23 11
Describe the motions of the earth-moon system. Motion of the earth accounts for the tides. Moon revolves around the earth every 27 days. The moon rotates every 27 days so that the same face
of the moon points at the earth.
![Page 12: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/12.jpg)
04/19/23 12
Describe the motions of the earth-moon system. Motion of the earth accounts for the tides. Moon revolves around the earth every 27 days. The moon rotates every 27 days so that the same face
of the moon points at the earth.
![Page 13: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/13.jpg)
04/19/23 13
Describe the motions of the earth-moon system. Motion of the earth accounts for the tides. Moon revolves around the earth every 27 days. The moon rotates every 27 days so that the same face
of the moon points at the earth.
![Page 14: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/14.jpg)
04/19/23 14
Describe the motions of the earth-moon system. Motion of the earth accounts for the tides. Moon revolves around the earth every 27 days. The moon rotates every 27 days so that the same face
of the moon points at the earth.
![Page 15: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/15.jpg)
04/19/23 15
Describe the motions of the earth-moon system. Motion of the earth accounts for the tides. Moon revolves around the earth every 27 days. The moon rotates every 27 days so that the same face
of the moon points at the earth.
![Page 16: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/16.jpg)
04/19/23 16
Describe the motions of the earth-moon system. Motion of the earth accounts for the tides. Moon revolves around the earth every 27 days. The moon rotates every 27 days so that the same face
of the moon points at the earth.
![Page 17: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/17.jpg)
04/19/23 17
Describe the motions of the earth-moon system. Motion of the earth accounts for the tides. Moon revolves around the earth every 27 days. The moon rotates every 27 days so that the same face
of the moon points at the earth.
![Page 18: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/18.jpg)
04/19/23 18
Describe the motions of the earth-moon system. Motion of the earth accounts for the tides. Moon revolves around the earth every 27 days. The moon rotates every 27 days so that the same face
of the moon points at the earth.
![Page 19: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/19.jpg)
04/19/23 19
Explain how eclipses of the sun and moon occur. Solar Eclipse: Moon is between the
sun and the earth - happens at a new moon.
Lunar Eclipse: Earth is between the sun and the moon - happens at a full moon
5.
![Page 20: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/20.jpg)
04/19/23 20
Describe ways of gaining information about the stars. Stars give off: infrared, x-rays,
ultraviolet, radio wave and different colors of light.
By spectroscope, each star’s light is split into colors. Each star has a different set of colors.
6.
![Page 21: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/21.jpg)
04/19/23 21
![Page 22: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/22.jpg)
04/19/23 22
List two ways of finding the distance between the earth and a star. Parallax - use angles to find the
distance.
Brightness - the closer a star is to us, the brighter.
7.
![Page 23: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/23.jpg)
04/19/23 23
List two ways of finding the distance between the earth and a star. Parallax - use angles to find the
distance.
Brightness - the closer a star is to us, the brighter.
Knowndistance
![Page 24: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/24.jpg)
04/19/23 24
List two ways of finding the distance between the earth and a star. Parallax - use angles to find the
distance.
Brightness - the closer a star is to us, the brighter.
Knowndistance
![Page 25: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/25.jpg)
04/19/23 25
List two ways of finding the distance between the earth and a star. Parallax - use angles to find the
distance.
Brightness - the closer a star is to us, the brighter.
Knowndistance
Angle-side-angle
![Page 26: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/26.jpg)
04/19/23 26
Be able to identify these constellations.
8.
![Page 27: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/27.jpg)
04/19/23 27
Be able to identify these constellations.
Orion
![Page 28: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/28.jpg)
04/19/23 28
Be able to identify these constellations.
Orion
Little Dipper
![Page 29: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/29.jpg)
04/19/23 29
Be able to identify these constellations.
Orion
Little Dipper
Big Dipper
![Page 30: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/30.jpg)
04/19/23 30
Be able to identify these constellations.
Orion
Little Dipper
Big Dipper
Leo theLion
![Page 31: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/31.jpg)
04/19/23 31
Be able to identify these constellations.
Orion
Little Dipper
Big Dipper
Leo theLion
Cassiopeia
![Page 32: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/32.jpg)
04/19/23 32
Be able to identify these constellations.
Orion
Little Dipper
Big Dipper
Leo theLion
Cassiopeia
Cygnus
![Page 33: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/33.jpg)
04/19/23 33
Be able to identify these constellations.
Orion
Little Dipper
Big Dipper
Leo theLion
Cassiopeia
Cygnus
![Page 34: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/34.jpg)
04/19/23 34
Be able to identify these constellations.
Orion
Little Dipper
Big Dipper
Leo theLion
Cassiopeia
Cygnus
![Page 35: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/35.jpg)
04/19/23 35
Be able to identify these constellations.
Orion
Little Dipper
Big Dipper
Leo theLion
Cassiopeia
Cygnus
Polaris (North Star)
![Page 36: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/36.jpg)
04/19/23 36
Relate the color of a star to its age and temperature
Nebula: (Gas cloud) low or no temperature
1st stage: Main sequence star medium temperature the color is usually yellow - our own sun is this.
2nd stage: Red Giant, color red and the star is at a cooler temp.
3rd stage: White Dwarf - white or blue - very hot will blow up in a Nova
Final stage Neutron star - Black hole
9.
![Page 37: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/37.jpg)
04/19/23 37
Explain what a light year is.
A light year is the distance it takes for light to travel in one year.
Alpha Centauri is our closets star (not including our own sun) that is 4.5 light years away.
Light travels 300,000 meters in one second
10.
![Page 38: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/38.jpg)
04/19/23 38
Describe the structure of the Milky Way Galaxy. It is a spiral galaxy Our solar system is about
30,000 light years away from the center
The diameter of the Galaxy is about 100,000 light years across.
About 400 billion stars.
11.
![Page 39: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/39.jpg)
04/19/23 39
Explain Red Shift.
It is just like the Doppler effect where as a train nears you the sound waves are at a higher pitch than when it passes you.
Light from stars does this also. When a star is moving away from us, it gives off a red glow, when it comes towards us, there is a blue glow.
12.
![Page 40: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/40.jpg)
04/19/23 40
Define: Quasar, supernova, nebula and Black hole Quasar: Very distant large
galaxies that give off a red shift.
Supernova: This is when a star explodes.
Nebula: Start of a new star; large pockets of gas.
Black hole: A star that collapses where there is no space between the atoms.
13.
![Page 41: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/41.jpg)
04/19/23 41
Name and Describe the layers of the sun. Central Core 15,000,000 K
Makes the energy - turns hydrogen into helium.
Photosphere is the light ball at 6,000 K
Atmosphere or Chromospheres gives off a faint red light
Coronae creates the solar wind.
14.
![Page 42: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/42.jpg)
04/19/23 42
Describe sunspots and prominences Sunspots are cooler areas of
the sun. They go through a 10 year period of many sunspots to few. Some years, tree rings are smaller indicating more sunspots.
Prominences are solar flares or hot spots on the sun that shoot high up in the chromospheres.
15.
![Page 43: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/43.jpg)
04/19/23 43
Explain how the sun affects the earth. The sun gives all energy to the
earth (minus geothermal energy)- plants take in the energy and transfer to animals.
However, harmful rays from the solar winds are deflected by the atmosphere and magnetic field of the earth.
15.
![Page 44: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/44.jpg)
04/19/23 44
How do the planets move? The farther out the planets the
longer it takes for planets to revolve around the sun.
Gravity holds the planets in orbit.
Speed of the planet would cause it to move in a straight line, but gravity from the sun holds the planet in orbit.
16.
![Page 45: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/45.jpg)
04/19/23 45
How do the planets move? The farther out the planets the
longer it takes for planets to revolve around the sun.
Gravity holds the planets in orbit.
Speed of the planet would cause it to move in a straight line, but gravity from the sun holds the planet in orbit.
16.
![Page 46: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/46.jpg)
04/19/23 46
How do the planets move? The farther out the planets the
longer it takes for planets to revolve around the sun.
Gravity holds the planets in orbit.
Speed of the planet would cause it to move in a straight line, but gravity from the sun holds the planet in orbit.
16.
![Page 47: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/47.jpg)
04/19/23 47
How do the planets move? The farther out the planets the
longer it takes for planets to revolve around the sun.
Gravity holds the planets in orbit.
Speed of the planet would cause it to move in a straight line, but gravity from the sun holds the planet in orbit.
16.
![Page 48: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/48.jpg)
04/19/23 48
How do the planets move? The farther out the planets the
longer it takes for planets to revolve around the sun.
Gravity holds the planets in orbit.
Speed of the planet would cause it to move in a straight line, but gravity from the sun holds the planet in orbit.
16.
![Page 49: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/49.jpg)
04/19/23 49
How do the planets move? The farther out the planets the
longer it takes for planets to revolve around the sun.
Gravity holds the planets in orbit.
Speed of the planet would cause it to move in a straight line, but gravity from the sun holds the planet in orbit.
16.
![Page 50: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/50.jpg)
04/19/23 50
How do the planets move? The farther out the planets the
longer it takes for planets to revolve around the sun.
Gravity holds the planets in orbit.
Speed of the planet would cause it to move in a straight line, but gravity from the sun holds the planet in orbit.
16.
![Page 51: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/51.jpg)
04/19/23 51
How do the planets move? The farther out the planets the
longer it takes for planets to revolve around the sun.
Gravity holds the planets in orbit.
Speed of the planet would cause it to move in a straight line, but gravity from the sun holds the planet in orbit.
16.
![Page 52: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/52.jpg)
04/19/23 52
How do the planets move? The farther out the planets the
longer it takes for planets to revolve around the sun.
Gravity holds the planets in orbit.
Speed of the planet would cause it to move in a straight line, but gravity from the sun holds the planet in orbit.
16.
![Page 53: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/53.jpg)
04/19/23 53
How do the planets move? The farther out the planets the
longer it takes for planets to revolve around the sun.
Gravity holds the planets in orbit. Speed of the planet would cause it
to move in a straight line, but gravity from the sun holds the planet in orbit.
Planets move in an elliptical or eggshaped orbit. (2 focus points)
16.
![Page 54: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/54.jpg)
04/19/23 54
Explain Seasons of the earth. Summer in Northern Hemisphere
17.
![Page 55: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/55.jpg)
04/19/23 55
Explain Seasons of the earth. Summer in Northern Hemisphere
17.
![Page 56: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/56.jpg)
04/19/23 56
Explain Seasons of the earth. Summer in Northern Hemisphere
17.
![Page 57: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/57.jpg)
04/19/23 57
Explain Seasons of the earth. Summer in Northern Hemisphere
17.
![Page 58: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/58.jpg)
04/19/23 58
Explain Seasons of the earth. Summer in Northern Hemisphere
17.
![Page 59: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/59.jpg)
04/19/23 59
Explain Seasons of the earth. Fall in Northern Hemisphere
17.
![Page 60: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/60.jpg)
04/19/23 60
Explain Seasons of the earth. Fall in Northern Hemisphere
17.
![Page 61: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/61.jpg)
04/19/23 61
Explain Seasons of the earth. Fall in Northern Hemisphere
17.
![Page 62: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/62.jpg)
04/19/23 62
Explain Seasons of the earth. Fall in Northern Hemisphere
17.
![Page 63: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/63.jpg)
04/19/23 63
Explain Seasons of the earth. Fall in Northern Hemisphere
17.
![Page 64: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/64.jpg)
04/19/23 64
Explain Seasons of the earth. Winter in Northern Hemisphere
17.
![Page 65: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/65.jpg)
04/19/23 65
Explain Seasons of the earth. Winter in Northern Hemisphere
17.
![Page 66: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/66.jpg)
04/19/23 66
Explain Seasons of the earth. Winter in Northern Hemisphere
17.
![Page 67: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/67.jpg)
04/19/23 67
Explain Seasons of the earth. Winter in Northern Hemisphere
17.
![Page 68: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/68.jpg)
04/19/23 68
Explain Seasons of the earth. Winter in Northern Hemisphere
17.
![Page 69: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/69.jpg)
04/19/23 69
Explain Seasons of the earth. Spring in Northern Hemisphere
17.
![Page 70: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/70.jpg)
04/19/23 70
Explain Seasons of the earth. Spring in Northern Hemisphere
17.
![Page 71: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/71.jpg)
04/19/23 71
Explain Seasons of the earth. Spring in Northern Hemisphere
17.
![Page 72: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/72.jpg)
04/19/23 72
Explain Seasons of the earth. Spring in Northern Hemisphere
17.
![Page 73: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/73.jpg)
04/19/23 73
Explain Seasons of the earth. Spring in Northern Hemisphere
17.
![Page 74: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/74.jpg)
04/19/23 74
Explain Seasons of the earth. Summer in Northern Hemisphere
17.
![Page 75: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/75.jpg)
04/19/23 75
Explain Seasons of the earth.
Summer in Northern Hemisphere
Tilt of the earth plus the revolution around the sun accounts for the season.
17.
![Page 76: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/76.jpg)
04/19/23 76
Explain why the solar system contains two general kinds of planets.
The first four planets, Mercury, Venus, Earth and Mars are rock planets with a nickel and iron core. They are much more dense than the gas planets.
The gas planets are much further from the sun and are made of helium, hydrogen and methane. They all have rings only Saturn’s rings are very visible.
The order of the gas planets are Jupiter, Saturn, Uranus, and Neptune
Pluto is no longer considered a planet.
18.
![Page 77: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/77.jpg)
04/19/23 77
Explain how the asteroids may have been formed and where they are located
It could have been another rock planet that did not completely form. Instead the baby planet broke up and created the asteroid belt.
The asteroid belt is between Mars the rock planet and Jupiter the largest gas planet.
The asteroid belt could be considered the “ring” of the sun.
19.
![Page 78: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/78.jpg)
04/19/23 78
Rock Planets
Planet Atmosp Moon Rotate Revolve Km from
Sun
Mercury None 0 59 days 88 days 58
Venus Heavy
Acid
0 Backwar
243 day
255 days
108
Earth Moderat
N2 02
1 24 hours 365 days
150
Mars Thin
C02
2 24 hours 687 days
228
![Page 79: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/79.jpg)
04/19/23 79
Gas Planets
Planet Dia
Km
Moon Rotate Revolve Km from
Sun
Jupiter 142,800 16 9.9 h 11.8
Years
778
Million K
Saturn 120.000 17 10.3 h 29.47
Years
1,427
Million K
Uranus 51,800 5 10.7 h 84
Years
4,486
Million K
Neptune 49,500 2 15 h 164.8
Years
5,900
Million K
![Page 80: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/80.jpg)
04/19/23 80
Compare the properties of meteors and comets Comets are large bodies in our
solar system that are too small to be a planet and have too much speed to be an asteroid so they orbit around the sun in a very elliptical orbit.
Meteors are space debris that usually burns in our atmosphere before hitting the surface.
![Page 81: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/81.jpg)
04/19/23 81
The pathway of a comet.
![Page 82: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/82.jpg)
04/19/23 82
The pathway of a comet.
![Page 83: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/83.jpg)
04/19/23 83
The pathway of a comet.
![Page 84: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/84.jpg)
04/19/23 84
The pathway of a comet.
![Page 85: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/85.jpg)
04/19/23 85
The pathway of a comet.
![Page 86: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/86.jpg)
04/19/23 86
The pathway of a comet.
![Page 87: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/87.jpg)
04/19/23 87
The pathway of a comet.
![Page 88: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/88.jpg)
04/19/23 88
The pathway of a comet.
![Page 89: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/89.jpg)
04/19/23 89
The pathway of a comet.
![Page 90: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/90.jpg)
04/19/23 90
The pathway of a comet.
![Page 91: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/91.jpg)
04/19/23 91
The pathway of a comet.
![Page 92: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/92.jpg)
04/19/23 92
The pathway of a comet.
![Page 93: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/93.jpg)
04/19/23 93
The pathway of a comet.
![Page 94: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/94.jpg)
04/19/23 94
The pathway of a comet.
![Page 95: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/95.jpg)
04/19/23 95
The pathway of a comet.
![Page 96: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/96.jpg)
04/19/23 96
The pathway of a comet.
![Page 97: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/97.jpg)
04/19/23 97
The pathway of a comet.
![Page 98: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/98.jpg)
04/19/23 98
The pathway of a comet.
![Page 99: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/99.jpg)
04/19/23 99
The pathway of a comet.
![Page 100: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/100.jpg)
04/19/23 100
The pathway of a comet.
![Page 101: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/101.jpg)
04/19/23 101
The pathway of a comet.
![Page 102: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/102.jpg)
04/19/23 102
The pathway of a comet.
![Page 103: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/103.jpg)
04/19/23 103
The pathway of a comet.
![Page 104: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/104.jpg)
04/19/23 104
The pathway of a comet.
![Page 105: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/105.jpg)
04/19/23 105
The pathway of a comet.
![Page 106: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/106.jpg)
04/19/23 106
The pathway of a comet.
![Page 107: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/107.jpg)
04/19/23 107
The pathway of a comet.
![Page 108: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/108.jpg)
04/19/23 108
The pathway of a comet.
![Page 109: Astronomy](https://reader038.fdocuments.in/reader038/viewer/2022110403/56812c2e550346895d90b1a9/html5/thumbnails/109.jpg)
04/19/23 109
The pathway of a comet.