At the _________ are rapids and waterfalls that block ships from traveling farther upstream.
A. Piedmont
B. Coastal plain
C. Appalachian Mountains
D. Fall line
D. Fall line
100
Why is it especially important to conserve fossil fuels?
A. They are nonrenewable
B. People do not understand how to find them
C. People do not know how to use them
D. The government owns all the sources
A. They are nonrenewable
100
The highest temperature ever recorded in the U.S. was in _________.
A. The Florida Everglades
B. Death Valley
C. Phoenix, Arizona
D. Las Vegas, Nevada
B. Death Valley
100
Describe the effect that lakes and rivers have had upon the economic development of the U.S. and Canada.
Lakes and rivers have been used to transport inland goods to the coasts and overseas.
200
_________ were formed in the Earth millions of years ago and can be burned for energy.
A. Renewable resources
B. Minerals
C. Fossil Fuels
D. Mountains
C. Fossil fuels
200
As commercial fishing has declined, what activity has taken its place?
A. Agriculture
B. Lumbering
C. Aquaculture
D. Conservation
C. Aquaculture
200
The interior parts of ___________ have an ice cap climate.
A. Alaska
B. Yukon Territory
C. Northwest Territories
D. Greenland
D. Greenland
200
According to it's opponents, what environmental problems are caused by the practice of mountaintop removal mining?
Landslides, damaging wildlife habitat, flooding, and contaminating water supplies.
300
Thunderstorms that can cause tornados are _______.
A. Hurricanes
B. Supercells
C. Prairies
D. Cold fronts
B. Supercells
300
Aside from latitude, what other factor greatly influences climate in North America?
A. Trees
B. Grasslands
C. Large landforms
D. Rivers
C. Large landforms
300
What type of climate dominates the extreme southeastern U.S. (bottom of Florida)
A. Tropical dry
B. Humid subtropical
C. Humid continental
D. Subarctic
A. Tropical Dry
400
Trees cannot grow above ________.
A. The timberline
B. The fall line
C. Latitude lines
D. Boundaries
A. The timberline
400
How does strip mining differ from the traditional practice of tunneling into the mountain?
Traditional mining involves digging under mountains in tunnels to obtain coal. Strip mining removes exposed chunks of the mountain so that workers can work above ground.