Go to page 146.

The surface of Earth can become COOLER because...

• volcanoes can release ash that BLOCK sunlight.

• volcanoes have lava.

• volcanoes don't affect temperature.

Go to page 147.

The Earth's climate is getting warmer faster because ...

• of animals eating plants.

• we burn fuels for heat, transportation, and electricity.

• of volcanoes.

Go to page 148.

What was the length of the glacier in 1950?

• 700 m

• 1000 m

• 1500 m

• 900 m

Go to page 148.

What was the size of the glacier in 2011?

• 1500 m

• 1000 m

• 700 m

• 900 m

Go to page 148.

What is the difference between the length of the glacier in 1950 and 2011?

• 1500 m - 700 m = 800 m

• 900 m - 700 m = 200 m

• 1000 m - 700 m = 300 m

Go to page 149.

What is causing the glacier to melt so quickly?

• volcanoes

• nothing

• increase of greenhouse gases into the atmosphere

Go to page 150 and 151.

What did we use to represent the atmosphere?

• I didn't do this page.

• bottles

• lamp

Go to page 150 and 151.

In which bottle did the heat increase?

• The bottle that was open (B)

• The bottle that was closed (A)

• I didn't do this page. :(

Go to page 152.

The United States and China share similar _______________

Go to page 152.

Guangzhou and New Orleans both have...

• no winter, no summer, no rain

• cold summers, hot winters, and no rain

• hot summers, warm winters, a lot of rain