Oceans and Water Cycle Quiz

What percentage of the Earth's surface is covered by water?

• 50%

• 61%

• 71%

• 80%

In the water cycle, what process involves the change of water from a gas to a liquid?

• Evaporation

• Condensation

• Precipitation

• Transpiration

Which part of the ocean floor is the deepest?

• Continental shelf

• Abyssal plain

• Oceanic trench

• Mid-ocean ridge

How does salinity affect the density of ocean water?

• Higher salinity decreases water density

• Higher salinity increases water density

• Salinity has no effect on water density

• Only temperature affects water density, not salinity

What causes ocean waves?

• The moon's gravitational pull

• Wind blowing across the ocean surface

• Underwater earthquakes

• All of the above

What is the primary cause of ocean tides?

• The rotation of the Earth

• The wind

• The gravitational pull of the moon and the sun

• Changes in water temperature

Which is NOT a stage of the water cycle?

• Evaporation

• Condensation

• Sublimation

• Photosynthesis

What is the term for the movement of water through the ocean in large streams?

• Ocean waves

• Ocean currents

• Ocean tides

• Ocean whirlpools

Which factor does NOT affect the salinity of ocean water?

• Evaporation rate

• Freshwater input from rivers

• The amount of sunlight

• Freezing and melting of ice

What is the term for the rising and falling of the ocean's surface due to the gravitational pull of the moon and the sun?

• Ocean currents

• Ocean waves

• Ocean tides

• Ocean circulation