Instructions: Choose one answer from each pair of selections. In ordinary cell thunderstorms, when the downdraft begins to expand laterally in the cloud, the thunderstorm will usually begin to STRENGTHEN WEAKEN.
Question 2What color would the sky be if air molecules selectively scattered only the longest wavelengths of visible light?
A) white
B) blue
C) red
D) black
Question 3Airline routes are sometimes changed as a result of solar storms.
Indicate whether the statement is true or false
Question 4In a strong tornado, doubling the wind speed will quadruple its destructive potential.
Indicate whether the statement is true or false
Question 5The blue color of the sky is due to ____.
A) selective scattering of visible light by air molecules
B) the filtering effect of water vapor in Earth's atmosphere
C) reflection of sunlight off the Earth's oceans
D) transmission of visible light through the ozone layer in Earth's stratosphere
Question 6The Southern Hemisphere has warmer summers and colder winters than the Northern Hemisphere.
Indicate whether the statement is true or false
Question 7When the air is dry, tornadoes can remain invisible until they reach the ground and pick up dust.
Indicate whether the statement is true or false
Question 8A cloud appears dark because it ____ more light than it ____.
A) scatters; absorbs
B) scatters; refracts
C) absorbs; scatters
D) absorbs; refracts
Quick Reply
