Earth's Oceans Test

Front

How did ocean water become salty?

Back

Rain dissolved minerals from rocks.

Front

Earth's oceans formed when rain filled deep basins on Earth.

Back

True

Front

Manganese nodules are mineral resources from the ocean floor.

Back

True

Front

Evaporation in polar regions causes surface water to become saltier.

Back

False

Front

Did asteroids and comets add water to the oceans?

Back

True

Front

On average, the salinity of seawater is 55 parts per thousand.

Back

False

Front

What are large, flat areas of the seafloor covered in sediment?

Back

Abyssal Plains

Front

What are the deepest part of the ocean?

Back

Trenches

Front

Where do most organisms that perform photosynthesis live?

Back

Surface Zone