Understanding Ocean Salinity

What is the primary reason the ocean is salty?

• Salt has accumulated in the ocean over millions of years.

• Salt is only found in the ocean.

• Salt is produced by marine life.

• Salt is added to the ocean by humans.

How does salt primarily enter the ocean?

• From the atmosphere.

• Through volcanic eruptions.

• By ocean currents.

• Via rivers carrying dissolved minerals.

What happens to the salt when ocean water evaporates?

• It evaporates with the water.

• It forms clouds.

• It turns into freshwater.

• It is left behind in the ocean.

Which sea is known for being particularly salty?

• The Caspian Sea.

• The Black Sea.

• The Red Sea.

• The Mediterranean Sea.

Why are the oceans at the poles less salty?

• They receive more sunlight.

• They have more volcanic activity.

• They have more salt-producing organisms.

• They are diluted by freshwater from glaciers.