Sun Earth Moon System

Question 1

How long is Earth’s rotation?

Answer 1

24 hours

Question 2

What causes day and night on Earth?

Answer 2

rotation

Question 3

How long is Earth’s revolution?

Answer 3

364.25 days (or 365 days)

Question 4

Why does Earth have seasons?

Answer 4

because the Earth is tilted on its axis as it revolves around the Sun

Question 5

What season do we experience when the North Pole is tilted toward the Sun?

Answer 5

summer

Question 6

What is the shape of Earth’s orbit around the Sun?

Answer 6

ellipse

Question 7

When are the shadows the longest in the US?

Answer 7

winter

Question 8

Describe Earth’s rotation

Answer 8

the turning of Earth on its axis

Question 9

Describe Earth’s revolution

Answer 9

The path Earth takes as it travels around the Sun. It takes about 365 days and is in the shape of an ellipse.

Question 10

When is the Sun at a 90° angle to the Earth?

Answer 10

Equinox. March 21 and September 21

Question 11

When is the Sun at the greatest distance north or south of the equator?

Answer 11

Solstice. June 21 or December 21.

Question 12

What causes shadows to be longer or shorter?

Answer 12

The angle of the Sun in the sky.