Quiz: Earth’s Water

What is the current state of Utah's Great Salt Lake?

• It is increasing in size.

• Its water volume is about half of its normal volume.

• It has risen 3.4 meters since 1847.

• The water level has dropped by 3.4 meters compared to 1847.

What has caused the Great Salt Lake to shrink?

• Higher temperatures than normal.

• Long-term drought.

• Excessive rainfall.

• Reduced freshwater supply from rivers.

How much of the freshwater in Utah is now supplied by rivers feeding the Great Salt Lake?

• 20%

• 40%

• 60%

• 80%

How are snow events at the Winter Olympics in areas with insufficient snow handled?

• By bringing snow from colder regions.

• By using snow machines to make artificial snow.

• By canceling outdoor events.

• By increasing the natural snowfall.

What are some negative effects of using snow machines?

• It reduces local freshwater levels.

• It increases soil erosion.

• It increases local temperatures.

• It is expensive to maintain.

What is the main source of water on Earth?

• Lakes and rivers

• Ice caps and glaciers

• Oceans

• Underground aquifers

What is water vapor?

• Liquid water in the air

• Steam

• Invisible gas in the air

• Frozen water

How is steam different from water vapor?

• Steam is colder than water vapor.

• Water vapor is cooler than the air around it.

• Steam is created when water boils.

• Steam is a type of invisible gas.

What causes evaporation?

• Cold temperatures

• Wind

• Heat

• Rain

What happens during condensation?

• Water changes from a liquid to a gas.

• Water vapor cools and changes into liquid water.

• Water evaporates into the atmosphere.

• Ice melts into water.