An odor, such as the odor of bread, is due to
A) individual atoms that detach from the source and diffuse individually through the air.
B) an electromagnetic wave emitted by the source [the bread].
C) cosmic vibrations emanating from the Great Pumpkin.
D) a pressure wave, similar to a sound wave, emitted by the violets.
E) molecules that detach from the source and diffuse through the air.
E
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If the diameter of a wire increases, its resistance __________
Fill in the blank(s) with correct word
The most important advantage of CCDs over film is that
A) they can cover larger areas of the sky than film can. B) they record much more light in a given exposure time. C) they record colors better than film can. D) their images never fade, as film can. E) their images do not have to be developed as film does.
The International System of Units (SI) has ______________ base units
a. four b. six c. seven d. five
Which of the following classes of rock is most likely to contain fossils?
a. Igneous b. Foliated c. Metamorphic d. Sedimentary