Jet planes avoid bad weather by flying above it in the
a. stratosphere.
b. troposphere.
c. mesosphere.
d. thermosphere.
a
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What physical process results in the convection of thermal energy?
a. Collisions between the particles in a material. b. The movement of a fluid through a space. c. The energy exchange when a liquid becomes a gas. d. The energy transferred by electromagnetic waves traveling between objects. e. Brownian motion.
An atom can be excited into a higher energy state by absorbing a __________
Fill in the blank(s) with correct word
Of the following gases, which is the most important contributor to the Earth's greenhouse effect?
a. water vapor c. CFCs b. ozone d. methane
An observer in the Southern Hemisphere takes a time exposure photograph of the night sky. If the illustration below depicts the photograph taken by the observer, which direction was the camera pointing?
a.
straight north
b.
straight east
c.
straight south
d.
straight west
e.
straight up, directly overhead