Why is the Ocean Salty?

What does Doug say about the taste of ocean water?

• It tastes bitter.

• It tastes sweet.

• It tastes sour.

• It tastes salty.

Why is it not a good idea to drink water directly from an ocean or lake?

• It contains germs.

• It is too cold.

• It is too salty.

• It is too hot.

What question does Ally ask Doug?

• Why is the ocean blue?

• Why is the ocean salty?

• Why is the ocean deep?

• Why is the ocean warm?

What do scientists call the water in lakes and rivers?

• Salt water

• Fresh water

• Mineral water

• Spring water

What is one of the first things scientists do when studying water on Earth?

• Check if it is salt water or fresh water

• Check its color

• Check its temperature

• Check its depth

What did scientists discover about the water in lakes and rivers?

• It has a lot of sugar.

• It has a tiny amount of salt.

• It has a lot of salt.

• It has no salt.

What is unique about rainwater compared to other water sources?

• It is cold.

• It is salty.

• It is warm.

• It is 100% fresh water.

What happens to rainwater when it hits the ground?

• It becomes salty.

• It becomes fresh.

• It freezes.

• It evaporates.

Why does the ocean have more salt than lakes and rivers?

• Because it is larger.

• Because rivers and lakes flow into it, adding salt over time.

• Because it is deeper.

• Because it is warmer.

What do scientists think is one big reason for the ocean's high salt content?

• Ocean currents

• Evaporation

• Continuous addition of salt from rivers and lakes

• Fish in the ocean