Q: Which substance is a compound?

OPTIONS:
- sodium
- chlorine
- table salt
- salt water
A: table salt
Q: When the switch in a simple series circuit is closed, what happens to the light bulb that the electricity is flowing to?

OPTIONS:
- the light cracks
- the light goes off
- the light burns out
- the light comes on
A: the light comes on
Q: What is a worldwide increase in temperature called?

OPTIONS:
- greenhouse effect
- global warming
- ozone depletion
- solar heating
A: global warming
Q: John was using his mp3 player when it suddenly stopped working. What is the first thing John should do to try correcting the problem?

OPTIONS:
- recharge the battery
- take the player apart
- replace the player with a new one
- change to a different song
A:
recharge the battery