Earth's Water

Plankton produce what?

• A Food for consumers

• B Food for secondary consumers

• C Oxygen we breath.

• D All of the above.

2. Our fresh drinking water comes from ______.

• A Water cycle

• B Underground

• C Ocean currents

• D Volcanic eruptions

3. Sunlight causes ocean water to become clouds by what process?

• A precipitation

• B evaporation

• C rain

• D climate change

4. Which of the following is not a problem affecting our oceans?

• A Overfishing

• B Ocean acidification

• C Sharks

• D Climate change

5. The size of a wave in the open ocean depends on what?

• A the strength of the wind blowing across the water's surface

• B particle motion

• C wave frequency

• D the moon's gravitational pull

6. The problem where coral are not able to rebuild their skeleton is a result of what?

• A Increase in carbon dioxide in the air

• B Increase in ocean pH

• C Both increase in carbon dioxide and ocean pH

• D Increase in carbon dioxide and decrease in ocean pH

7. What happens to the particle motion of water particles as you travel deeper beneath the ocean's surface?

• A Water particles move in bigger circles.

• B Water particles move in smaller circles.

• C The movement of water particles stays the same.

• D The movement of water particles becomes irregular.

8. All of the following determines how high a wave will be except what?

• A Wind speed

• B duration

• C fetch

• D Phase of the moon

9. What happens to a wave’s height as it approaches shore?

• A Its height decreases and its wavelength increases

• B Its height and wavelength decrease

• C Its height increases and its wavelength decreases

• D Its height and wavelength increase

10. What is the difference between wave and tide?

• A A wave is generated by wind and tides by the sun.

• B A wave is generated by the sun and the tides by the moon.

• C Both waves are created by the wind.

• D A wave is generated by the wind and the tides by the moon.