What happened at the Three Mile Island nuclear reactor in 1979?
A. partial meltdown
B. a reactor exploded
C. over 5000 people died within days
D. public confidence in nuclear power was restored
Answer: A
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Why are grain size and composition often used to name sedimentary rocks?
A) These are indicators of what type of volcano the rocks came from. B) These are indicators of how deep within the earth the rocks formed. C) They are easily observed and easily distinguishable. D) These are indicators of how deep within the sea the rocks formed.
Which toxic chemical is produced by the burning of wood?
a. Cyanide b. Acetic acid c. Copper chlorate d. Organic peroxide
Which of the following was mentioned in the opening two-page spread of Chapter 20?
A. stars B. nebula C. the science of astronomy D. galaxies E. All of these were mentioned.
What landform is produced when a sea cave weathers all the way through?
A) headlands B) sea arch C) sea stack D) sandbar