What does a neutral atom become if it acquires an extra electron?
a. negatively charged
b. positively charged
c. an ion
d. a molecule
A, C
Physics & Space Science
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The fact that light can be polarized shows that light is
a. polar c. an electromagnetic wave b. monochromatic d. a transverse wave
Physics & Space Science
When you stand with only one of your feet on a weighing scale, the scale reading is
A) half. B) the same as with both feet. C) doubled. D) none of the above
Physics & Space Science
Uranus and Neptune do not contain liquid metallic hydrogen because they
a. are not massive enough. b. do not contain enough hydrogen. c. rotate too slowly. d. are too far from the Sun. e. have magnetic fields that are much too weak.
Physics & Space Science
Sandstone is a common type of
A) meteoritic rock B) sedimentary rock C) metamorphic rock D) igneous rock
Physics & Space Science