The auroras in the upper atmosphere are caused by
A) visible light interaction with the asthenosphere.
B) AM radio broadcasts.
C) various weather phenomena.
D) the interaction of the solar wind and upper layers of the Earth's atmosphere.
D
You might also like to view...
The oxygen we breathe is used to do which of the following?
A) convert NADH and FADH2 to NAD and FAD B) provide energy for the conversion of ADP to ATP C) both a and b D) neither a nor b
Which of the following is true regarding the relationship between molecular motion, wavelength, and temperature?
A. as temperature decreases, molecular motion increases, wavelength increases B. as temperature decreases, molecular motion decreases, wavelength decreases C. as temperature increases, molecular motion decreases, wavelength decreases D. as temperature increases, molecular motion increases, wavelength decreases
The approximate maximum thickness of contemporary glacial ice is ________
A) 4 meters (13 feet) B) 40 meters (130 feet) C) 400 meters (1,300 feet) D) 4,000 meters (13,000 feet) E) 40,000 meters (130,000 feet)
Which of the following represents an alarming positive feedback loop of global warming?
A) Increasing temperatures raise humidity, which further increases temperatures. B) Decreased pH of the ocean increases the rate at which carbon dioxide is absorbed by the oceans from the atmosphere. C) Increased use of fossil fuels adds ozone to the stratosphere, which traps more heat. D) Increased levels of atmospheric carbon dioxide decreases photosynthesis, which further increases atmospheric levels of carbon dioxide.