Day+and+Night

Watch this video:

media type="youtube" key="hWkKSkI3gkU" width="560" height="315"

Answer the following questions on lined paper.

1) What is the Earth's axis?

2) At what degree is the Earth tilted on its axis?

3) What is rotation?

4) Explain how we have day and night. Include a simple diagram.

5) How long does it take the Earth to do one rotation?

When you are done answering the questions, you may re-watch the video and click on the "take the quiz" link and try answering the questions.