Waves, States of Matter, and Graphs Test

Front

What is a medium in the context of sound waves?

Back

A medium is a substance (solid, liquid, or gas) through which sound waves travel. Without a medium, sound cannot be transmitted.

Front

What unit is used to measure frequency?

Back

Frequency is measured in hertz (Hz), which represents the number of cycles per second.

Front

What type of graph is best for showing monthly rainfall data?

Back

A bar graph is best for showing how much rain fell in each month of the year.

Front

How does a remote control communicate with a television?

Back

The remote control sends low-energy infrared radiation to a detector on the front of the television.

Front

How do electromagnetic waves behave in different media?

Back

Electromagnetic waves travel slower in a medium where particles are close together, while mechanical waves travel faster in a medium where particles are close together.

Front

What is the difference between mechanical and electromagnetic waves?

Back

Mechanical waves require a medium to travel through, while electromagnetic waves do not require a medium and can travel through a vacuum.

Front

What is the relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as the wavelength increases, the frequency decreases, and vice versa.

Front

What is the definition of amplitude in waves?

Back

Amplitude is the maximum displacement of points on a wave from its rest position, indicating the energy of the wave.

Front

What is a wave?

Back

A wave is a disturbance that transfers energy from one place to another without transferring matter.

Front

What is the purpose of a line graph?

Back

A line graph is used to show trends over time by connecting data points with a line.