High School Science Experiments

Try these ideas for science experiments targeted at the high school educational level. Perform a science experiment and explore different hypotheses to test.

Hispanic woman sitting on bed drinking tea and using laptop
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You've heard caffeine acts as a stimulant and that it may increase your concentration when you are under its influence. You can test this with an experiment.

Sample Hypothesis:

  1. Caffeine use does not affect typing speed.
  2. Caffeine does not affect concentration.
Teenage students with arms raised in classroom
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If you are in a large group of students and the instructor asks the class what 9 x 7 is. One student says it is 54. So does the next. Do you fully trust your answer of 63? We are influenced by the beliefs of the people around us and sometimes conform to what the group believes. You can study the degree to which social pressure affects conformity.

Sample Hypothesis:

  1. The number of students will not affect student conformity.
  2. Age does not affect student conformity.
  3. Gender has no effect on student conformity.
Close-Up Of Man With Smoke Bomb
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Smoke bombs are fun for kids of all ages but are probably not appropriate experiment subjects for kids younger than high school level. Smoke bombs offer an interesting way to learn about combustion. They can be used as propellants in rockets, too.

Sample Hypothesis:

  1. The ratio of smoke bomb ingredients will not affect the quantity of smoke that is produced.
  2. The ratio of ingredients will not affect the range of a smoke bomb rocket.
Hands applying germ sanitizer gel
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Hand sanitizer is supposed to keep germs under control on your hands. You can culture bacteria to see if hand sanitizer is effective. You can compare different types of hand sanitizer to see if one works better than another. Can you make an effective natural hand sanitizer? Is hand sanitizer biodegradable?

Sample Hypothesis:

  1. There is no difference in the effectiveness of different hand sanitizers.
  2. Hand sanitizer is biodegradable.
  3. There is no difference in effectiveness between homemade hand sanitizer and commercial hand sanitizer.