The sky Our place in space ConstellationsMeasurement Celestial Sphere Polaris and precession $ 200 $...

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Transcript of The sky Our place in space ConstellationsMeasurement Celestial Sphere Polaris and precession $ 200 $...

The skyOur place in space

Constellations

Measurement

Celestial Sphere

Polaris and

precession

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$200

About how many stars are visible on a clear dark night with just your eyes?

About 3000

$400

6 pm

If the moon rose tonight at 5 pm, about what time will it

rise tomorrow

$600

You have been sitting out watching the star and you notice that the star you are watching has moved about 15 degrees, how long have you been watching?

1 hour

$800

If a star is directly overhead tonight, how long will it take for it to be directly overhead again?

23 hours and 56 minutes

$1000

When the sun rises it is located in the constellation Gemini, what constellation will it set in?

In Gemini

$200

23.5 degrees

What is the tilt of the earth on its axis?

$400

year

The time it takes for Earth to complete an orbit around the Sun is called a

$600

Universe, Local Group, Milky Way and Solar System

Put the following in order from largest to smallest: Milky Way Local group,

solar system and Universe

$800

We are not in the center of our solar system, which is not in the center of the

Milky Way and we are just one of a billion galaxies in the universe. Earth is made of common elements found throughtout the

universe.

Why is Earth considered ordinary as a planet?

$1000

The Milky Contains which of the following:100,00 stars100 million stars100 Billion stars

100 million stars

$200

constellations

Groups of stars making an apparent pattern in the celestial sphere are called

$400

Brightest star

In general, what is true of the alpha star in a constellation

$600

Pisces

If your astrological sign is Aries according to tradition, what constellation is the sun actually in on your date of

birth?

$800

Taurus

If the sun rises in the constellation of Taurus which

constellation will it set in?

$1000

88

Into how many constellations is the celestial sphere divided

by the IAU?

$200

How long is the Precession cycle

26,000 Years

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Is a star with a large parallax a great distance or short

distance from earth

Shorter distance

$600

What is inversely proportional to the distance to a star?

Parallax

$800

We measure distances to stars in?

Light years

$1000

Which star is closer one with a parallax of 2.3 arc seconds or one with a 1.2 arc seconds?

The one with 2.3 arc seconds is closer

$200

Celestial sphere

Astronomical objects are viewed against the

background of the _?

$400

What celestial line is a product of the Earth’s orbit

around the Sun?

ecliptic

$600

+90 to -90 degrees

What is the range of values for declination?

$800

0 hours to 23 hours

What is the range of values for Right Ascension

$1000

If a star at vernal equinox rises at 0hr what would a star

at 1.0 hour rise?

1 hour after vernal equinox

$200

Northstar

Of all the visible objects in the sky, which appears to

move the least?

$400

Where on Earth would you be if Polaris was at your Zenith

North Pole

$600

Precession

The fact that Polaris will not always be the North Star is due to what Earth motion?

$800

26,000 years

How long is the precession cycle

$1000

If Seattle is at 43 degrees north Latitude, where is Polaris in the sky?

43 degrees