What identifies a material as a liquid, solid, or gas?
a. Physical profile
b. Chemical state
c. Physical property
d. State of matter
Answer: d. State of matter
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In what sense do we say we are looking back in time when we are looking at the stars?
A) We see stars as they once were when their light reaches us. B) Because space curves, we are actually looking at the past when we look in the night sky. C) Because stars are emitting immense radiation, we are seeing processes that have already happened. D) Because Earth's atmosphere bends and distorts their light.
Megalopolis refers to
A) adjacent, overlapping Metropolitan Statistical Areas. B) central cities. C) consolidated Metropolitan Statistical Areas and their CBDs. D) central cities plus urbanized areas. E) regional government federation.
Hypercane
What will be an ideal response?
Which of the following energy sources is not renewable?
A. nuclear fission power B. solar energy C. wind energy D. hydropower