What types of surfaces appear dark on a radar image taken by a satellite?
A. a surface that is rough
B. a surface that is smooth or slopes away from the satellite
C. a surface that slopes toward the satellite
D. a surface that contains quartz and feldspar
Answer: B
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What happened at the Three Mile Island nuclear reactor in 1979?
A. partial meltdown B. a reactor exploded C. over 5000 people died within days D. public confidence in nuclear power was restored
Compare and contrast the concepts of slab-pull and ridge-push. How might mantle plumes influence plate movement? What will be an ideal response?
Abundant Carboniferous coal deposits in North America and Europe were formed in the
_________ Period. a. Cambrian d. Devonian b. Ordovician e. Carboniferous c. Silurian
Why are ethnic Russians leaving Central Asia?
What will be an ideal response?