Light & Sound Waves

What does the person transfer to the rope by pulling it up and down at point A?

• movement
• energy
• wavelength
• frequency

Hope drew a diagram to model a light wave being reflected when it meets a brick, as shown. The teacher asked Hope to redraw the diagram in order to model some of the energy in the light wave being absorbed by the brick. Which diagram best represents some of the energy in the light wave being absorbed by the brick?

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The diagram below shows an electromagnetic spectrum. Based on the information shown, which statement is not true?

• Ultraviolet waves occur at a higher frequency than Infrared waves.
• Gamma Rays have the shortest wavelength of all wave types.
• Ultraviolet waves have a longer wavelength than visible light.
• Visible light waves carry more energy than microwaves

This diagram models a sound wave from a car horn hitting a wall. According to the model, which statement best describes what happens to the sound energy when the sound wave hits the wall?

• Ten percent of the sound energy is absorbed by the wall.
• Thirty percent of the sound energy is absorbed by the wall
• Eighty percent of the sound energy is reflected by the wall.
• Eighty percent of the sound energy passes through the wall

Students are researching what colors of visible light that different animals are able to see. They are given the following portion of the electromagnetic spectrum to aid in their research. Nina has chosen to research bumblebees. Her research shows that bumblebees can see wavelengths ranging from 400-600 nanometers. Based on this information, what could Nina conclude about the sight of bumblebees?

• Bumblebees only see violet and blue.
• Bumblebees only see green and yellow.
• Bumblebees see every color but red.
• Bumblebees see every color but violet.

Lila wants to call a friend using her cell phone. Which statement best describes what must take place in order for Lila’s friend to hear her over the phone?

• Sound waves travel directly from Lila’s phone to her friend’s phone.
• Radio waves travel to a satellite in orbit around Earth and then to her friend’s phone.
• Sound waves travel through a series of wires so that the phone receptor will pick up a signal.
• Radio waves travel through a series of towers before sending a signal to her friend’s phone.

What is the relationship between the wavelength of a wave and its energy?

• They are directly proportional.
• The energy is always greater.
• The wavelength is always greater.
• They are inversely proportional.

The picture lists light waves from left to right in order of highest to lowest energy. Which region of the electromagnetic spectrum has the longest wavelength?

• UV
• Radio
• Gamma
• Visible

As you move from left to right across the electromagnetic spectrum in the image, the wavelength becomes

• taller
• shorter
• longer
• lower

Low-frequency red light is used in dark rooms because it does not expose the film. This is because the red light has a low

• amplitude
• energy
• intensity
• wavelength