This phenomenon is due to how the different wavelengths of light are scattered by the molecules of the atmosphere. On a clear day, the sky is bright blue because the short-wavelength components of the visible spectrum (violet and blue) are scattered more, and therefore they arrive at our eyes from all directions. (But our eyes do not perceive violet very well, therefore the sky appears just blue). When the sun sets, however, the path covered by the sunlight to reach our eyes becomes longer, and then blue light is scattered away and longer wavelengths (orange-red) start to reach our eyes and this is why the sky turns into this colors. Finally, at night the sky appears black because there is no sunlight (and black is absence of colors).
1. False
2.False
3.False
4.True
5. True
6. False
7.True
8.False
9. True
10. False
<em>The answer is True</em>
<em>Reason: The electromagnetic energy comes out of it in the form of light and heat.</em>
False, is certainly the answer because Long wave radiation is weak and hence has very low ability too penetrate the atmosphere and statistically it is said that just about 3-8% of the long-wave radiation escapes into space. Hope that helps.
Answer: average speed
The overall rate of speed at which an object moves: calculated by dividing the total distance an object travels by the total time
instantaneous speed > The speed of an object at one instant in time.
velocity > Speed in a given direction