Question: Choose your answer.

In clear weather, a bright light can be seen for a long distance. In conditions of heavy fog, the visibility is greatly reduced. Which of the following explains the reduced visibility?

OPTIONS:
- Light is refracted by water vapor in the air.
- Light is scattered by water droplets in the air.
- Light is absorbed by water vapor near the ground.
- Light is reflected by water droplets on the ground.
My Answer: Light is scattered by water droplets in the air.

Question: Choose your answer.

Why are seals able to live off the coast of Antarctica while frogs, snakes, and panthers are not?

OPTIONS:
- Seals can swim.
- Seals are predators.
- Seals have fur and blubber.
- Seals are warm-blooded animals.
My Answer: Seals have fur and blubber.

Question: Choose your answer.

Barry collected four different rocks. The rock with the GREATEST mass will feel the ___.

OPTIONS:
- heaviest
- smoothest
- sharpest
- hardest
My Answer: heaviest

Question: Choose your answer.

Which two body systems are involved in inhaling oxygen and exhaling carbon dioxide?

OPTIONS:
- endocrine and skeletal
- excretory and nervous
- circulatory and respiratory
- digestive and reproductive
My Answer:
circulatory and respiratory