What is the best use of coal if you want it to yield the highest possible net energy?
A. smelting iron ore
B. producing electricity
C. fueling a steam engine boat
D. heating your house
Answer: A
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Which of the following describes radioactive decay by beta particle emission?
A) The atomic number of the daughter isotope is one more than the parent; the mass numbers are the same. B) The daughter isotope has an atomic number one less than the parent and a mass number two less. C) The mass number of the daughter isotope is one more than the parent and both isotopes have the same atomic number. D) The daughter isotope has an atomic number two less than the parent and a mass number four less.
The principle of cross-cutting relationships states that geologic features that cut across rocks most form ________ the rocks they cut through
A) before B) after C) above D) below
Consider the accompanying figure and then explain how the movement of the continents can help explain why some species have the geographic distribution that is observed today.
What will be an ideal response?
A high level, rounded cloud is called a(n):
a. cirrus. b. cirrocumulus. c. cirrostratus. d. cirrocirrus.