UNIT 2 Review - 2 answers

Front

What is the definition of refraction?

Back

Refraction is the bending of light as it passes from one medium to another, caused by a change in its speed.

Front

What property of light allows us to see colors?

Back

The property of light that allows us to see colors is its wavelength; different wavelengths correspond to different colors.

Front

How does the speed of sound vary in different materials?

Back

The speed of sound varies depending on the type of matter it travels through; it travels faster in solids than in liquids and gases.

Front

What happens to light when it strikes a transparent object?

Back

When light strikes a transparent object, it can be transmitted, refracted, or reflected.

Front

What is the difference between visible light and other forms of electromagnetic radiation?

Back

Visible light is a small part of the electromagnetic spectrum that can be seen by the human eye, while other forms, like infrared and ultraviolet, are not visible.

Front

What is absorption in the context of light?

Back

Absorption is the process by which light is taken in by a material, converting the light energy into other forms of energy, such as heat.

Front

What is the relationship between wavelength and energy of light?

Back

Shorter wavelengths of light have higher energy, while longer wavelengths have lower energy.

Front

What is the definition of a wave?

Back

A wave is a disturbance that transfers energy through space or matter, characterized by its amplitude, wavelength, and frequency.

Front

What is the principle of superposition in wave theory?

Back

The principle of superposition states that when two or more waves overlap, the resulting wave is the sum of the individual waves.

Front

What is the role of the medium in wave propagation?

Back

The medium is the substance through which a wave travels; it can affect the speed and behavior of the wave.