Science Fair Project:

Star Clock

3.7 based on 19 ratings

Why?

Do the stars themselves move?

You probably know that the rotation of the Earth makes it sunny for about half the day and dark for the other half. Of course, the amount of light and darkness depends on the time of the year. Day and night happen because the Earth rotates on an axis that runs through the north and south poles. Sometimes the part of the earth you’re standing on faces the sun, and sometimes it doesn’t. This is why the sun appears to rise and set—but the sun isn’t actually moving.

Now, let’s talk about what happens in the night sky! The same apparent motion happens to the stars at night. The earth spins, and this makes the stars appear to move from east to west in what is called a diurnal circle—the apparent (not real) movement of the stars around the earth. For example, the Big Dipper constellation appears to move around the poles in what’s called circumpolar motion. If you watch long enough, the constellation will seem to travel around Polaris, the North Star. Exactly where the constellations appear to be in the sky depends on your latitude, or how far north or south you are on the earth.

Author: Tricia Edgar
Disclaimer and Safety Precautions

Education.com provides the Science Fair Project Ideas for informational purposes only. Education.com does not make any guarantee or representation regarding the Science Fair Project Ideas and is not responsible or liable for any loss or damage, directly or indirectly, caused by your use of such information. By accessing the Science Fair Project Ideas, you waive and renounce any claims against Education.com that arise thereof. In addition, your access to Education.com's website and Science Fair Project Ideas is covered by Education.com's Privacy Policy and site Terms of Use, which include limitations on Education.com's liability.

Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state's handbook of Science Safety.

How likely are you to recommend Education.com to your friends and colleagues?

Not at all likely
Extremely likely