A star much hotter than our Sun radiates more energy at ____
a. shorter wavelengths and appears redder
b. shorter wavelengths and appears bluer
c. longer wavelengths and appears redder
d. longer wavelengths and appears bluer
e. about the same wavelengths and appears whiter
ANSWER: b
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To be completely beyond Earth's gravity, you must travel to a region
A. beyond the solar system. B. above the Earth's atmosphere. C. well beyond the Moon. D. Forget it; you can't travel far enough.
The feature in the photograph below was formed by
A) plucking.
B) abrasion.
C) plucking on the left and abrasion on the right.
D) abrasion on the left and plucking on the right.
Which of the following is true about the water table?
A. The water table can slope in opposite directions beneath a hill. B. Deeper water below the water table must flow in the same direction as near-surface water. C. The shape of the water table does not mimic topography. D. all of these E. none of these
Medical geographers have observed that the world-wide spread of HIV/AIDS from its hearth in Central Africa is best explained by a(n) ________ diffusion pattern
A) expansion B) hierarchical C) contagion D) combination of expansion and hierarchical