NASA Follows Changing Freshwater from Space

The video explores Earth's water distribution, highlighting that only 3% is fresh and crucial for life. NASA satellites play a vital role in monitoring water resources, providing data on droughts, floods, and water quality. The GRACE mission tracks aquifer levels, while other satellites observe soil moisture and vegetation growth. Monitoring lakes and rivers helps manage water quality, especially concerning algae blooms. Snowpack changes due to climate warming affect water availability. Understanding these dynamics aids in better water management globally.

What percentage of Earth's water is fresh and usable for drinking and agriculture?

• 10%

• 3%

• 50%

• 70%

How do NASA satellites contribute to managing water resources?

• By predicting volcanic eruptions

• By tracking freshwater availability globally

• By measuring ocean salinity

• By providing weather forecasts

What does the GRACE mission specifically measure?

• Water stored in aquifers

• Rainfall patterns

• Air pollution levels

• Ocean currents

Why is soil moisture important for vegetation?

• It prevents soil erosion

• It helps in predicting rainfall

• It supports plant growth

• It increases soil temperature

How does climate change affect snowpack and water availability?

• It causes snowpack to melt faster

• It has no effect on snowpack

• It increases snowpack at higher altitudes

• It decreases rainfall in all regions