Crash Course Astronomy #3 In The Sky

Front

How long does it take the Earth to orbit the sun?

Back

1 year, 364.25 days, or 12 months. All of these are correct.

Front

True or False: The Earth is tilted and wobbles like a top as it spins.

Back

True

Front

Why do the stars appear to move in the sky?

Back

Because the Earth changes position a little bit each day.

Front

What is the imaginary path that the moon, sun, and planets take across the sky?

Back

The ecliptic.

Front

True or False: The Earth is closer to the sun when it is winter in Michigan.

Back

True.

Front

What is the tilt of the Earth's axis?

Back

Approximately 23.5 degrees.

Front

What causes the seasons on Earth?

Back

The tilt of the Earth's axis and its orbit around the sun.

Front

What is the term for the path the sun appears to take through the sky over the course of a year?

Back

The ecliptic.

Front

What is the effect of the Earth's rotation on the appearance of stars?

Back

It causes stars to appear to move across the sky.

Front

What is the significance of the North Star (Polaris)?

Back

It is located nearly directly above the North Pole and is used for navigation.