Light and Sound Waves

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves that do not need a medium to travel through. They can move through a vacuum, such as space.

Front

What are mechanical waves?

Back

Mechanical waves are waves that require a medium (solid, liquid, or gas) to travel through.

Front

What happens to sound waves when they hit a wall?

Back

Sound waves can be reflected, absorbed, or transmitted when they hit a wall.

Front

What is an echo?

Back

An echo is a reflection of sound that arrives at the listener after a delay.

Front

Why do diamonds sparkle?

Back

Diamonds sparkle because they reflect and refract light waves, bending the light to create a shiny appearance.

Front

What is amplitude in waves?

Back

Amplitude is the height of a wave from its rest position, which determines the loudness of sound or brightness of light.

Front

What is frequency in waves?

Back

Frequency is the number of waves that pass a point in one second, measured in Hertz (Hz). It determines the pitch of sound or color of light.

Front

What are translucent materials?

Back

Translucent materials allow some light waves to pass through, but not in a straight path, causing objects behind them to appear blurry.

Front

What are transparent materials?

Back

Transparent materials allow light waves to pass through without scattering, making objects behind them clearly visible.

Front

What are opaque materials?

Back

Opaque materials do not allow any light waves to pass through, making it impossible to see through them.