Which gas is the most abundant greenhouse gas? ozone chlorofluorocarbon carbon dioxide methane water vapor

Water Vapor

Explanation:

I just had it on a quiz

1. Wavelength is the distance between two successful crests or troughs in a transverse waves (wave motion is perpendicular to the direction of wave motion), and the distance between two successful rarefactions or compressions in a longitudinal wave ( wave motion is parallel to the direction of the wave).
In this case; the distance between two successful troughs is 0.5 × 10 ^-6 m.

2. Frequency is the number of complete oscillations in one seconds. In this case a complete oscillation occurs after every two successful crests or troughs. Therefore; the frequency will be;.
1.0 × 10^-6 sec = 6.0 × 10^ 8 crests
Thus; 1 sec = (6.0 × 10^8 crests)/ (1.0 × 10^-6 sec)
Hence; the frequency is 6 × 10^14 Hz 

3. Multiplying the answer in question 1 and 2; that is multiplying the value of wavelength and frequency we get;
0.5 × 10^-6 × 6 ×10^14 = 3 ×10 ^8 m/s

4. When you multiply the frequency of a wave and its frequency you get the speed of that particular wave; 
That is; speed = frequency × wavelength 
Thus; the speed of the above wave is 3.0 ×10^8 m/s; which means the wave is an electromagnetic wave since it has a speed of light (3.0 ×10^8 m/s)