Do a science fair project!

Do a science fair project!

Test, answer, or show?

Your science fair project may do one of three things:

Cartoon line graph with two ascending lines.
  • Test an idea (or hypothesis.)

  • Answer a question.

  • Show how nature works.

Topic ideas:

These are just the beginning of ideas. 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.

  • Measure the cloud cover in the sky.

  • Test the effect of a mild acid on sea shells. (Test lemon juice or vinegar, for example.)

  • Demonstrate how Earth's water cycle creates fresh drinking water from sea water.

  • Cartoon greenhouse with Earth inside.
  • Investigate the greenhouse effect outdoors, over one week using two thermometers, two shallow open boxes lined with soil, with one covered tightly with clear plastic wrap, and a notebook for taking temperature readings through the day and night. Or use a different, but well-controlled method of comparison.

  • Cartoon cloud with rain.
  • Make a do-it-yourself rain gauge. Measure the rainfall during one storm or over several days.

  • Make a cloud in a bottle.

  • Demonstrate why the equator is warmer than other parts of Earth (unequal heating of Earth's surface) using a flashlight, graph paper, a ruler, and masking tape.

  • Cartoon ice cube with melted water around it.

By the way, what is science anyway?