Oceanography Test 4th Grade

Front

What process do waves use to create sand?

Back

Waves break sediment into tiny pieces.

Front

What is plankton?

Back

Tiny plants and animals that live in the upper sea area.

Front

What type of animal is a whale?

Back

A fish.

Front

Why is salt water heavier than fresh water?

Back

Because it has salt in it.

Front

What do whales use to strain their food?

Back

Baleen.

Front

What is the primary component of ocean water that makes it salty?

Back

Salt.

Front

What is the role of sediment in the ocean?

Back

Sediment provides nutrients and habitats for marine life.

Front

What are the two main types of plankton?

Back

Phytoplankton (plant-like) and zooplankton (animal-like).

Front

How do ocean currents affect marine life?

Back

They distribute nutrients and regulate temperatures.

Front

What is the significance of coral reefs in the ocean ecosystem?

Back

They provide habitat and shelter for many marine organisms.