Waves: Sound and Light Unit

Front

What do you see when you observe a color on an object?

Back

You see the color that is reflected off the object. For example, if you see green on a plant leaf, the wavelengths of the color GREEN from the visible light spectrum bounce off the plant to your eye.

Front

True or False: Particles behave as waves.

Back

False

Front

In which medium does light travel the slowest?

Back

Light travels slowest in solids.

Front

According to the law of reflection, what is always equal in a plane mirror?

Back

The angle of incidence is always equal to the angle of reflection.

Front

How does the pitch of sound change when a car approaches and then moves away from an observer?

Back

The sound changes from high pitch to low pitch from the perspective of the observer.

Front

What is reflection in terms of light?

Back

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

Front

What is the visible light spectrum?

Back

The visible light spectrum is the range of wavelengths of light that can be seen by the human eye, typically from about 400 nm (violet) to 700 nm (red).

Front

What happens to light when it passes from air into water?

Back

Light slows down and bends, a phenomenon known as refraction.

Front

What is the difference between sound waves and light waves?

Back

Sound waves are mechanical waves that require a medium to travel through, while light waves are electromagnetic waves that can travel through a vacuum.

Front

What is the Doppler effect?

Back

The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.