What is the surface of Mercury like?
A. rocky, with volcanoes and old ocean basins
B. gaseous
C. rocky, with craters and scarps
D. mostly rock, but covered about 40% by liquid methane
Answer: C
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A polymer that is made from wood or cotton is _________.
Fill in the blank(s) with the appropriate word(s).
If you move an electron from a lower energy level to a higher energy level, you can call the atom a(n) _____
A) excited atom B) neutral atom C) disassociated atom D) grounded atom
An electron moving from the negative terminal to the positive terminal of a 12. volt battery gains (or loses) how much energy? (Be sure to indicate whether it is a gain or loss.)
What will be an ideal response?
Traveling at their current speeds, how long would it take the Pioneer and Voyager probes to travel the distance to the nearest stars?
A) at least 100,000 years B) several billion years C) around 4.4 years D) about a 1,000 years