SCIENCE REVIEW

These fluffy, dark gray clouds produce thunderstorms. What type of cloud is this?

• Cirrus

• Stratus

• Cumulonimbus

• Cumulus

Answer explanation

Which of these increases as a submarine dives deeper into the ocean?

• The number of plants in the water

• The freshness of the water

• The water temperature

• The water pressure

Answer explanation

When tectonic plates move toward each other to form mountain ranges, it is called a-

• Convergent boundary

• Divergent boundary

• Transform boundary

I am a rock that forms from lava cooling and hardening. What am I?

• A sedimentary rock

• Metamorphic rock

• An igneous rock

When two or more elements are joined together chemically, they form a new substance called:

• A compound

• A solution

• A mixture

• An electron

Which zone in the ocean has the least amount of sunlight?

• The sunlight zone

• The midnight zone

• The twilight zone

Which part of the ocean floor has the most animal life?

• Abyssal plain

• Ocean trench

• Continental slope

• Continental shelf

In an experiment, when you use the result to evaluate your hypothesis, it is called the-

• Hypothesis

• Constant variable

• Conclusion

• Independent variable

Answer explanation

The salinity of the Mediterranean sea is greater than that of the Atlantic ocean. This means that compared to the Atlantic ocean, the Mediterranean sea is-

• Wider

• Deeper

• Saltier

• Cooler

Answer explanation

I am a rock that forms from extreme heat and pressure. What am I?

• A sedimentary rock

• A metamorphic rock

• An igneous rock