Unit 4 Post Test SPRING 2025

What percentage of Earth's water is saline (oceans)?

• 3%

• 97%

• 68.7%

• 30.1%

Fill in the blank: Icecaps and glaciers make up _______ of fresh water.

• 68.7%

• 50%

• 75%

• 80%

What is the percentage of fresh surface water that is found in lakes?

• 87%

• 11%

• 2%

• 0.3%

Which bar graph shows the approximate distribution of each surface water resource on Earth?

• [Graph showing 87% lakes, 11% swamps, 2% rivers]

• [Graph showing different distribution]

What is the source of wind energy?

• Moving air

• Solar panels

• Water currents

• Geothermal heat

According to the passage, turbines are used to:

• generate electricity

• pump water

• compress air

• heat buildings

A community would like to have cleaner air. They know that burning fuel creates air pollution. Which types of energy should they use less?

• wind and solar

• coal and oil

• solar and hydro

• hydro and wind

What is the term for a giant wave caused by an earthquake with an epicenter on the ocean floor?

• a swell

• a breaker

• a tsunami

• a tidal bore

Which does NOT affect deep ocean currents?

• wind

• salinity

• density

• temperature

What is caused by the force of gravity between the Moon and Earth?

• ocean tides

• phases of the Moon

• seasons on Earth

• planets' motion in orbit