Which of the following are necessary for rainbows to appear?
A) rain falling at some distance away
B) clear sky above the viewer
C) clear sky behind the viewer
D) all of these
Answer: D
You might also like to view...
Of the following, the benefits of green buildings include ________
A) minimal adverse health effects on occupants B) reduced use of energy and water C) pollution control D) being built from sustainable materials E) all of these are benefits of green buildings
Approximately 40% of the energy used in a typical household is used for heating.
Answer the following statement true (T) or false (F)
The winter monsoon in eastern and southern Asia is characterized by
a. ?wet weather and winds blowing from land to sea. b. ?wet weather and winds blowing from sea to land. c. ?dry weather and winds blowing from sea to land. d. ?dry weather and winds blowing from land to sea. e. ?dry weather and Chinook winds.
How many calories must be added to 3 g of ice at 0°C to convert it to water vapor at 100°C?
A. 1440 calories B. 540 calories C. 180 calories D. 720 calories E. 2160 calories