Why do Uranus and Neptune appear blue?
A) Oceans that are visible through their atmospheres are blue.
B) The nitrogen gas in their atmospheres absorbs red light.
C) The methane gas in their atmospheres absorbs red light.
D) Small dust grains preferentially scatter blue light.
C) The methane gas in their atmospheres absorbs red light.
You might also like to view...
A neutral boron atom has 5 electrons, but in this case all but one of its electrons have been knocked off. How much energy (in electron-volts) is needed to remove the last electron?
What will be an ideal response?
If the radius of the Earth somehow increased with no change in mass, your weight would
A) increase. B) not change. C) decrease.
An object starts from rest with an acceleration of 2.0 
for 3.0 seconds. It then reduces its acceleration to 1.0 
for 5.0 additional seconds. The total distance covered is
A. 52 m. B. 38 m. C. 11 m. D. 9.0 m. E. 7.6 m.
At room temperature, a typical person transfers energy to the surroundings at the rate of 62 W
If this energy transfer has to be made up by an equivalent food intake, how many kilocalories (food calories) does this person need to consume every day just to make up this energy? (1 cal = 4.186 J) A) 1000 kcal B) 1100 kcal C) 1300 kcal D) 1500 kcal E) 1600 kcal