Ask a parent, teacher, or other adult to help you research the topic and find out how to do a science fair project about it.
Test, answer, or show?
Your science fair project may do one of three things:
Test an idea (or hypothesis.)
Answer a question.
Show how nature works.
How do the constellations change in the night sky over different periods of time?
How does the number of stars visible in the sky change from place to place because of light pollution?
Learn about and demonstrate the ancient method of parallax to measure the distance to an object, such as stars and planets.
Study different types of stars and explain different ways they end their life cycles.
How do the phases of the Moon correspond to the changing tides?
Demonstrate what causes the phases of the Moon?
How does the tilt of Earth’s axis create seasons throughout the year?
How do weather conditions (temperature, humidity) affect how fast a puddle evaporates?
How salty is the ocean?
Solar system topics:
How does the size of a meteorite relate to the size of the crater it makes when it hits Earth?
How does the phase of the Moon affect the number of stars visible in the sky?
Show how a planet’s distance from the Sun affects its temperature.
Observe and record changes in the number and placement of sun spots over several days. DO NOT look directly at the Sun!
Make a sundial and explain how it works.
Show why the Moon and the Sun appear to be the same size in the sky.
How effective are automobile sunshades?
Study and explain the life space of the sun relative to other stars.