The most useful way to measure seafloor depth is to ____
A)measure the time it takes for sound waves to travel from a ship to the seafloor and back
B)use an energy source to produce strong waves that will reflect from the seafloor and layers beneath the seafloor
C)use a very long line with a weight attached
D)make trips to the seafloor in modern submersibles
E)extrapolate depth from temperature and pressure changes
B
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The 1991 eruption of Mount Pinatubo in the Philippines ________ the global albedo, resulting in a temporary ________ of Earth
A) increased; cooling B) decreased; warming C) increased; warming D) decreased; cooling
The energy from the combustion of municipal solid waste in an incinerator can be used to boil water to make steam for heating water or space, or for producing electricity.
Answer the following statement true (T) or false (F)
Most of the approximately 3,300 historic eruptions lasted:a
less than one month. b. one to six months. c. one to two years. d. more than two years. e. none of these
Corn varieties are typically rated in terms of “days to maturity”. The reason this system works well is that corn always takes the same number of days to mature, independent of the growing location
a. True b. False