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Homework exercises on the Universe for a Physical Science course. Also refer to physics, science, space, stars, planets, moon, galaxies, comets, Milky Way, WBT,   education, distance learning, Ron Kurtus, School for Champions. Copyright © Restrictions

The Universe - Homework Answers

After you have completed the Universe Homework, you can refer to these answers. Although it is better to have known the answer from your reading, the process of writing the correct answer on your homework sheet will help you remember the concepts.

1. What is the difference between a star and our sun?

Our Sun is also a star.

2. What is the difference between a star and a planet?

Stars give off light, while planets rotate around the sun.

3. When you look in the sky at night, how can you tell if it is a star or a planet?

Usually, stars twinkle and planets don't. 

4. How does the apparent movement of the stars and planets differ through the night?

Stars rotate around the North Star while planets seem to wander.

5. What do we call the star that does not seem to move at night?

The North Star.

6. How do you find the North Star?

Follow the front edge of the Big Dipper.

7. What is a galaxy?

Millions of stars rotating about a point.

8. About how many stars are in the Universe?

Billions.

9. What is the Milky Way?

Our galaxy.

10. Why do some galaxies look like pin-wheels?

It is caused by their rotation.

Where can you go from here?