📏 What do you measure?

The answers, and why

1. In the "Which wing shape flies farthest?" test, what do you measure? How far the plane flies (cm). Yes. That's the result, the dependent variable, and its unit is cm.

2. In the "Which boat shape carries the most pennies?" test, what do you measure? How many pennies it carries before it sinks (pennies). Yes. That's the result, the dependent variable, and its unit is pennies.

3. In the "Which gives a balloon the most static: hair, wool or cotton?" test, what do you measure? How many paper bits the balloon picks up (paper bits). Yes. That's the result, the dependent variable, and its unit is paper bits.

4. In the "Which grows crystals faster: salt or sugar?" test, what do you measure? How long the longest crystal is after five days (mm). Yes. That's the result, the dependent variable, and its unit is mm.

5. In the "Does a bigger water drop make letters look bigger?" test, what do you measure? How tall a letter looks through the drop (mm). Yes. That's the result, the dependent variable, and its unit is mm.

6. In the "Does grass grow best under red, blue or green light?" test, what do you measure? How tall the grass grows in 14 days (mm). Yes. That's the result, the dependent variable, and its unit is mm.

7. In the "Which floor slows a toy car the most?" test, what do you measure? How far the car rolls (cm). Yes. That's the result, the dependent variable, and its unit is cm.

8. In the "Does a heavier pendulum swing faster?" test, what do you measure? How many swings it makes in 30 seconds (swings). Yes. That's the result, the dependent variable, and its unit is swings.