What is the process by which the long-term cooling of Earth takes place?
A. Subduction
B. Seafloor spreading
C. Convection
D. Transform faulting
Answer: C
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Why might the following nuclear reaction not be very good for energy production in a fission reactor? U ? Ba + Kr + 1 neutron
A) The material only produces one neutron so the chain reaction will not be very efficient. B) The products are too large. C) There are too many products produced. D) The mass of the byproducts is too high and therefore the energy released will not be high enough. E) Interatomic attraction between the products will impede the efficient separation of the atoms from the unstable nuclei.
Smog is an example of a ________ pollutant
A) quaternary B) primary C) secondary D) tertiary
Weathering by alternating freezing and thawing of water:
a. creates angular blocks of rock. b. dissolves granite. c. is called heaving. d. creates levees. e. creates new chemical substances.
Earthquakes occur at subduction zones, but volcanoes do not because the subducted lithosphere is pushed deep into the mantle.
Answer the following statement true (T) or false (F)