The lithosphere consists of
a. all of the crust's depth.
b. all of the crust's depth and part of the mantle's depth.
c. part of the crust's depth.
d. all of the crust's depth and all of the mantle's depth.
b
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A lens is designed to work in the visible, near-infrared, and near-ultraviolet. The best resolution of this lens from a diffraction standpoint is
A) in the near-infrared. B) the same for all wavelengths. C) in the near-ultraviolet. D) indeterminate. E) in the visible.
A collapsing cloud fragment that will form a star of one solar mass (like our Sun) has a mass of about:
A) 2 solar masses. B) 10 solar masses. C) 200 solar masses. D) 1020 solar masses. E) 1040 solar masses.
When an object is released from rest and falls in the absence of friction, which of the following is true concerning its motion?
A) Its velocity is constant. B) Both its acceleration and its velocity are constant. C) Neither its acceleration nor its velocity is constant. D) Its acceleration is constant.
If we could see our own galaxy from 2 million light-years away, it would appear ________
A) as a faintly glowing band of light stretching all the way around the sky B) like a single, dim star C) as a flattened disk with a central bulge and spiral arms D) to fill the sky with widely spaced stars