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Which of the following is not a greenhouse gas?
1. water vapor
2. carbon dioxide
3. oxygen
What is one reason that the Earth's core is so hot?
1. Coal and oil burn in the core.
2. As heavy elements in the core decay, they produce radioactive heat.
3. The Sun heats up the Earth and causes the inside to melt.
Nitrogen is not a greenhouse gas. This is because nitrogen
What is the main way that humans put excess carbon dioxide into the atmosphere?
1. spilling oil into the ocean
2. burning fossil fuels
3. creating carbonated beverages
How do we use fossil fuels to generate electricity?
1. When we burn fossil fuels, smoke is created, and it releases electrical bolts.
2. When we burn fossil fuels, the smoke it generates moves turbines.
3. When we burn fossil fuels, the heat boils water, and the steam moves turbines.
Rivers and lakes near large farms are heavily polluted. What is one reason for this?
1. excessive use of fertilizers on farms
2. decaying animal carcasses
3. trash dumping into rivers
A geyser is
1. a hot spring that shoots columns of cold water and steam into the air every so often
2. a hot spring that shoots columns of hot water and steam into the air every so often
3. a hot spring that shoots columns of hot water and steam into the air all the time
4. a hot spring that shoots columns of hot water and steam into the inside of the earth every so often
An aquifer is
1. A permeable layer of rock and sediment that can store and carry groudwater in enough quantity to supply wells.
2. A permeable layer of rock and sediment that can not store and carry groudwater in enough quantity to supply wells
3. A permeable layer of sand and sediment that can store and carry groudwater in enough quantity to supply wells
4. A non-permeable layer of rock and sediment that can store and carry groudwater in enough quantity to supply wells
Stalactites and stalagmites are found in
1. caverns
2. glaciers
3. geysers
4. Karst topography
An ice cap is
1. a glacier that is less than 50,000 square kilometers in area
2. the snow that covers a mountain in winter
3. the snow on top of mountains on Denali park
4. a glacier that is less than one billion square kilometers in area
The albedo effect of glaciers is vital to the cooling of our atmosphere. The albedo effect is defined as:
1. the fraction of solar energy reflected from the Earth back into space
2. the cooling effect of ice on Earth's oceans
3. the absorption of carbon dioxide by Earth's glaciers
A biggest source of carbon dioxide in the atmosphere is:
1. human respiration (exhaling $CO_2$)
2. transportation
3. volcanoes
A cirque is
1. a semicircular basin
2. an oval basin
3. a peak left after glaciers erode mountains
4. only present in valley glaciers