Front

What is an echo?

Back

An echo is a sound wave that reflects off a hard surface and returns to the listener.

Front

What does opaque mean?

Back

Opaque refers to a material that allows very little to no light to pass through, making objects behind it invisible.

Front

What is refraction?

Back

Refraction is the bending of waves due to a change in their speed as they pass from one medium to another.

Front

What is diffraction?

Back

Diffraction is the bending of waves around obstacles or through openings, causing them to spread out.

Front

What happens to light when it is transmitted?

Back

When light is transmitted, it passes through a material without being absorbed or reflected, allowing objects behind it to be seen.

Front

What is reflection in wave behavior?

Back

Reflection is the bouncing back of waves when they hit a surface that does not absorb the energy.

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 behind them appear blurry.

Front

What is absorption in the context of waves?

Back

Absorption is the process by which a material takes in energy from waves, preventing them from passing through or reflecting.

Front

What is the principle of wave transmission?

Back

Wave transmission refers to the process of waves passing through a medium, such as light passing through glass.

Front

What is the speed of sound in air?

Back

The speed of sound in air at room temperature is approximately 343 meters per second.