Unit 5: Waves Assessment

Front

What is reflection in the context of light waves?

Back

Reflection is the bouncing back of light waves when they hit a shiny, flat surface, allowing us to see our image.

Front

What does it mean for a material to be opaque?

Back

An opaque material reflects or absorbs all light that strikes it, preventing any light from passing through.

Front

Why does a pencil appear broken when placed in water?

Back

The pencil appears broken because light waves slow down when they move from air to water, causing a change in direction.

Front

What is frequency in terms of waves?

Back

Frequency is the number of waves that pass through a given point per second, measured in Hertz (Hz).

Front

What are electromagnetic waves?

Back

Electromagnetic waves are forms of energy that can travel through empty space as well as through matter, including radio waves, light, x-rays, and ultraviolet.

Front

What is refraction?

Back

Refraction is the bending of light waves as they pass from one medium to another, changing speed and direction.

Front

What is the difference between transparent and translucent materials?

Back

Transparent materials allow light to pass through clearly, while translucent materials allow some light to pass but scatter it, making objects appear blurry.

Front

What is the amplitude of a wave?

Back

Amplitude is the maximum distance that points on a wave move from their rest position, indicating the wave's energy.

Front

What is a crest in a wave?

Back

A crest is the highest point of a wave, representing the maximum displacement of the wave from its rest position.

Front

What is a trough in a wave?

Back

A trough is the lowest point of a wave, representing the minimum displacement of the wave from its rest position.