Water Distribution and the Hydrosphere on Earth

The video tutorial discusses the distribution of water on Earth, focusing on the hydrosphere. It explains that while water is abundant, only a small percentage is usable freshwater. The tutorial covers the water cycle, the classification of water sources, and the impact of climate change on water systems. It also includes interactive questions to reinforce learning.

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

• 50%

• 85%

• 71%

• 97%

Which sphere of Earth is primarily discussed in relation to water distribution?

• Hydrosphere

• Geosphere

• Biosphere

• Atmosphere

What percentage of Earth's water is freshwater?

• 1%

• 20%

• 3%

• 10%

Where is the majority of Earth's freshwater stored?

• Groundwater

• Ice caps and glaciers

• Rivers

• Lakes

Which type of water is found beneath the Earth's surface?

• Surface water

• Groundwater

• Ice caps

• Water vapor

What is the primary process that cleans and replenishes Earth's water?

• Precipitation

• Water cycle

• Transpiration

• Condensation

Which process is NOT part of the water cycle?

• Precipitation

• Evaporation

• Condensation

• Photosynthesis

What is the effect of increased carbon dioxide and methane in the atmosphere?

• Cools the atmosphere

• Increases Earth's temperature

• Decreases Earth's temperature

• No effect on temperature

Which Earth system is NOT affected by permafrost thawing?

• None, all are affected

• Biosphere

• Hydrosphere

• Geosphere

What happens to organic matter trapped in permafrost when it thaws?

• It evaporates

• It turns into fossil fuel

• It remains unchanged

• It decomposes and releases gases