In gym class a student kicks a soccer ball high into the air. As the ball goes upward, which type of energy is increasing? OPTIONS:
- kinetic energy
- thermal energy
- potential energy
- mechanical energy
A: potential energy

Which of the following is most likely to make a rock crack and crumble? OPTIONS:
- dew evaporating on the rock
- leaves decaying on the rock
- snow melting in a crack in the rock
- water freezing in a crack in the rock
A: water freezing in a crack in the rock

A person in a dark room looking through a window can clearly see a person outside in the daylight. But a person outside cannot see the person inside. Why does this happen? OPTIONS:
- There is not enough light being reflected off the person in the room.
- Light rays cannot pass through a window twice.
- Outside light does not pass through windows.
- Sunlight is not as intense as other sources of light.
A: There is not enough light being reflected off the person in the room.

Which of these is an inherited behavior? OPTIONS:
- a seal balancing a ball
- a dog getting the newspaper
- a spider spinning a web
- an ape using sign language
A:
a spider spinning a web