Light & waves review

Front

What is diffraction?

Back

Diffraction is the bending or spreading of waves when they encounter an obstacle or pass through a narrow opening.

Front

What happens to light when it hits a green object?

Back

The frog reflects green light and absorbs other colors.

Front

What type of wave is a longitudinal wave?

Back

A longitudinal wave is a wave in which the particles of the medium move parallel to the direction of the wave's propagation.

Front

What is a transverse wave?

Back

A transverse wave is a wave in which the particles of the medium move perpendicular to the direction of the wave's propagation.

Front

What causes the appearance of size difference in objects submerged in water?

Back

The light rays that travel through water and then into air are refracted, causing the appearance of size difference.

Front

What is reflection in terms of light?

Back

Reflection is the bouncing back of light rays when they hit a surface.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, changing its speed.

Front

What is the difference between mechanical waves and electromagnetic waves?

Back

Mechanical waves require a medium to travel through, while electromagnetic waves do not.

Front

What is an example of a compressional wave?

Back

Sound waves are an example of compressional waves, where particles of the medium move back and forth in the same direction as the wave.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).