Warm Up 1.Think about how the weather changes throughout the year (from January to December)....
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Warm Up Warm Up 1.Think about how the weather changes throughout the year (from January to December). Describe in complete sentences or draw detailed pictures (at least 4) to show how the weather changes throughout the year.
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Transcript of Warm Up 1.Think about how the weather changes throughout the year (from January to December)....
Warm UpWarm UpWarm UpWarm Up1.Think about how the weather
changes throughout the year (from January to December). Describe in complete sentences or draw detailed pictures (at least 4) to show how the weather changes throughout the year.
Our revolution and rotation is determined by how close or how far we are from the sun
In astronaut terms, this is determined by the astronomical unit-1 A.U. is the distance from Earth to the Sun
-The Earth, like all planets, orbits (revolves around) the sun
How long is one full revolution? 365.25
days
=
1 year
• The Earth rotates on its axis • 1 full rotation = one day
DAYwarmer
NIGHTcooler
• Earth’s axis is not straight– Earth’s axis is tilted 23.5° from
vertical
• Earth’s axis is not straight– Earth’s axis is tilted 23.5° from
vertical
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23.5° tilt
Our Modern CalendarOur Modern Calendar
• Day is the time required for the Earth to rotate on its axis. (23hr56min)
• Length of day animation– http://www3.eboard.com/boards/16/92/94/B
rownstein/att-1573310/LengthofDay%5B1%5D.swf
• Day is the time required for the Earth to rotate on its axis. (23hr56min)
• Length of day animation– http://www3.eboard.com/boards/16/92/94/B
rownstein/att-1573310/LengthofDay%5B1%5D.swf
• The Earth’s orbit actually looks like this
This shows orbit
• Why does that matter?The Earth’s tilted axis allows us to
have seasons
EXAMPLE!
warmer
cooler
• 4 seasons based on Earth’s position to the sun• What affects our position to the sun?!
Winter
Summer
FallSpring
Tilt (towards/neutral/away)
Radiation (high/neutr
al/low)
Temperature (warm/
moderate/cool)
Season
Summer
Winter
Fall
Spring
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Alien Planets ActivityAlien Planets Activity
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Scale of the UniverseScale of the Universe
• http://scaleofuniverse.com• http://scaleofuniverse.com
POSTCARDPOSTCARD• Pick a place on the map you will travel to
over winter break.• Write a postcard telling your friend what
season it is there. Explain why it is that season. Describe what the temperature is like.
• For the picture on your postcard (on the back), draw what the Earth and sun would look like for this season.
• Pick a place on the map you will travel to over winter break.
• Write a postcard telling your friend what season it is there. Explain why it is that season. Describe what the temperature is like.
• For the picture on your postcard (on the back), draw what the Earth and sun would look like for this season.
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1
23
4
1. Alaska2. South
Africa3. Brazil4. England
1. Alaska2. South
Africa3. Brazil4. England
EXIT TICKETEXIT TICKET
1. Why are summer days in Charlotte hotter (warmer) than winter days in Charlotte?
2. Look at the diagram shown. Which position would Earth be at when it is winter in Charlotte?
