Which refers to the number of wavelengths that pass a fixed point in a second?

wavelength

amplitude

frequency

compression

Green plants need light in order to survive. Structures in the leaves absorb light, which in turn, helps plants make their own food.Under which color of light will plants be least likely to make food?

red

blue

orange

green

After the 1600s, how did observations of light being refracted change the way most scientists thought about light?

They no longer believed that light acted as waves.

They began to believe that light acted as waves.

They no longer believed that light acted as particles.

They began to believe that light acted as particles.

The frequency of a wave does not change as it passes from one medium to another.What will most likely happen if a light wave moves from the air into a solid?

The wavelength of the light wave will increase.

The speed of the light wave will decrease.

The wavelength of the light wave will remain the same.

The speed of the light wave will remain the same.

Which example best illustrates that light behaves like particles?

Light bends as it strikes a window.

Light bounces off a white cement sidewalk.

Light travels in space at a speed of about 3.0 x 108 m/s.

Light increases in speed as it moves through matter.

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