Question: Choose your answer.

Which BEST explains why green marine algae are most often restricted to the top 100 meters of the ocean?

OPTIONS:
- They have no roots to anchor them to the ocean floor.
- They can live only where there is light.
- The pressure is too great for them to survive below 100 meters.
- If the algae lived below 100 meters they would be eaten by animals.
My Answer: They can live only where there is light.

Question: Choose your answer.

As Earth revolves around the Sun, the number of daylight hours varies from place to place. In which location would the number of daylight hours remain constant?

OPTIONS:
- North Pole
- Prime Meridian
- Equator
- Antarctica
My Answer: Equator

Question: Choose your answer.

Wire was looped several times around an iron nail, and the wire's ends were connected to a battery. For which of these will this device most likely be used?

OPTIONS:
- to produce a heat source
- to demonstrate frictional forces
- to create a magnetic field
- to generate a sound wave
My Answer: to create a magnetic field

Question: Choose your answer.

It rained on a hot summer afternoon and a puddle formed. After several hours, the puddle was gone. Which two processes made the puddle form and then disappear?

OPTIONS:
- precipitation followed by evaporation
- deposition followed by evaporation
- precipitation followed by runoff
- deposition followed by runoff
My Answer:
precipitation followed by evaporation