Water Sources and Distribution

The video discusses the limited availability of fresh water on Earth, which constitutes only about 3% of the total water. It highlights the main sources of fresh water: surface waters, glaciers and ice caps, ground water, and the atmosphere. Surface waters, including lakes and rivers, are crucial but make up less than 1% of fresh water. Glaciers and ice caps store about 70% of fresh water, primarily in Greenland and Antarctica. Ground water, found beneath the Earth's surface, accounts for roughly 30% of fresh water. The atmosphere holds a small percentage of fresh water, mostly from evaporation and plant transpiration. The video concludes with a call to explore more about Earth's water through additional resources.

What percentage of Earth's water is fresh water?

• 1%

• 10%

• 30%

• 3%

Which of the following is NOT considered a surface water source?

• Lakes

• Rivers

• Glaciers

• Swamps

What natural force causes rivers to flow from higher to lower altitudes?

• Gravity

• Wind

• Magnetism

• Tides

Where are the majority of the world's glaciers located?

• Africa

• North America

• Greenland and Antarctica

• Asia

What percentage of the world's fresh water is stored in glaciers and ice caps?

• 50%

• 30%

• 10%

• 70%

What is the term for the amount of pore space in rock and soil?

• Permeability

• Porosity

• Saturation

• Density

Which type of aquifer is exposed to the surface of the land?

• Unconfined

• Perched

• Artesian

• Confined

What percentage of fresh water on Earth is accounted for by ground water?

• 20%

• 10%

• 40%

• 30%

What process contributes 90% of the water in the atmosphere?

• Condensation

• Evaporation

• Precipitation

• Transpiration

What is the primary source of the remaining 10% of atmospheric water?

• Sublimation

• Condensation

• Transpiration

• Evaporation