How many gallons per minute can a tanker shuttle operation deliver without interruption?
a. a few hundred
b. a few thousand
c. zero
d. several hundred
Answer: d. several hundred
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The speed of travel for radio waves is
A. at a speed that depends on frequency. B. usually at the same speed as sound waves. C. slower, on average, than sound waves. D. always much faster than sound waves.
If the Earth was in a cooling trend, which of the following processes would most likely act as a positive feedback mechanism?
A. increasing the snow cover around the Earth B. increasing the water vapour content of the air C. decreasing the amount of cloud cover around the Earth D. increasing the carbon dioxide content of the air
The type of metamorphism that typically produces the hard, dense, fine-grained rocks called mylonites
is called ____________________. Fill in the blank(s) with the appropriate word(s).
The number of waves passing a fixed point in 1 second is known as the
A) Kelvin. B) electromagnetic spectrum. C) wavelength. D) frequency.