Waves CP Unit Test 24 25

Front

What does it mean to encode a message?

Back

Encoding a message means converting information into a format that can be transmitted or stored. For example, when you send a picture from your phone, it is encoded into a digital format.

Front

What does it mean to decode a message?

Back

Decoding a message means converting the encoded information back into a format that can be understood. For example, when your friend receives a picture, their phone decodes it so they can see it.

Front

What is amplitude in a wave?

Back

Amplitude is the maximum distance that points on a wave move from their rest position. It is often associated with the energy of the wave; higher amplitude means more energy.

Front

How do you measure the amplitude of a wave?

Back

To measure the amplitude of a wave, you measure the distance from the rest position (equilibrium) to the crest (highest point) or trough (lowest point) of the wave.

Front

What is a wave?

Back

A wave is a repeating pattern that transfers energy through a medium or space, characterized by its wavelength, frequency, and amplitude.

Front

What is wavelength?

Back

Wavelength is the distance between two consecutive points that are in phase on a wave, such as from crest to crest or trough to trough.

Front

What is frequency?

Back

Frequency is the number of complete waves that pass a given point in one second, measured in Hertz (Hz). Higher frequency means more waves in a given time.

Front

What is the relationship between energy and amplitude in waves?

Back

In general, the energy of a wave is directly proportional to its amplitude; higher amplitude waves carry more energy.

Front

What is a sound wave?

Back

A sound wave is a type of mechanical wave that travels through a medium (like air, water, or solids) and is caused by vibrating objects.

Front

What is the difference between a longitudinal wave and a transverse wave?

Back

In a longitudinal wave, the particle displacement is parallel to the direction of wave propagation (e.g., sound waves). In a transverse wave, the particle displacement is perpendicular to the direction of wave propagation (e.g., light waves).