An object falls through the air, gaining speed as it falls. A student claims that this creates new energy, and so it breaks the law of energy. Which statement describes why the student is incorrect?

D. Energy is converted from other forms, not created.

Just like matter, energy can't be created or destroyed. Energy can just transform into different types, depending on what's affecting it and what's around it. For example, electrical energy from an outlet can make the plug hot (heat energy).

I hope this helps

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.