Understanding the Water Cycle

What percentage of the Earth's water is saltwater?

• 75%

• 50%

• 96.5%

• 10%

What is the process called when water evaporates from plants?

• Precipitation

• Transpiration

• Condensation

• Evaporation

How long does a water molecule typically stay in the atmosphere?

• 100 days

• 30 days

• 10 days

• 1 day

What is one way water is stored on Earth?

• In the wind

• In ice and snow

• In the sun

• In rocks

What natural event can bring water from deep in the Earth to the surface?

• Earthquake

• Volcanic eruption

• Tornado

• Hurricane

What is the total volume of water on Earth?

• 100 million cubic miles

• 332.5 million cubic miles

• 500 million cubic miles

• 1 billion cubic miles

What is the term for water falling from the atmosphere as rain or snow?

• Condensation

• Evaporation

• Transpiration

• Precipitation

How much water can a large oak tree transpire in a year?

• 60,000 gallons

• 10,000 gallons

• 20,000 gallons

• 40,000 gallons