A student places a pencil in a glass of water and observes that the pencil appears to be broken. Which of these provides the best explanation for why the pencil appears broken?

Light rays are bent by the water in the glass.

Water reflects light rays away from the pencil.

The surface of the water reflects light rays.

The pencil absorbs all the light rays that hit it.

The distance from Earth to the Moon can be accurately calculated by pointing high-powered lasers onto the Moon’s surface. The time it takes for the light to return is used to find the distance. To make this possible, astronauts on the Apollo 11 Moon mission had to place a device on the moon that would–

Bounce the laser light back to Earth

Change the frequency of the laser light

Allow the laser light to pass through

Store the laser light for future use

Solar panels generate electricity using photovoltaic cells that receive sunlight. To protect these cells from moisture while allowing sunlight to pass through, engineers must design a cover for the solar panel that is–

waterproof and transmits light.

cold to the touch and absorbs light.

very flexible and reflects light.

stronger than steel and bends light.

The diagrams provided here represent two light waves. Which conclusion is supported by the data provided in the diagrams?

Light Wave #1 will appear brighter than Light Wave #2.

Light Wave #1 will travel in a straight line, but not Light Wave #2.

Light Wave #1 will reflect more easily than Light Wave #2.

Light Wave #1 will be a different color than Light Wave #2.

The diagram shows the relative positions of a light source, apple, paper, and person. The person can’t see the apple. Which of the following correctly describes the light interactions taking place in this diagram?

Light is absorbed by, not transmitted through, the paper.

Light is transmitted through the paper and then reflected off the apple.

Light from the light source is reflected only off the apple.

Light is reflected off the apple, but absorbed by the light source.

The idea that light is not matter is supported by which of the following evidence?

Light does not have mass or volume.

Light can be separated into colors.

Light bounces off most objects.

Light can be absorbed by objects.

When an energy wave is soaked or taken in

Energy waves bouncing off an object

When light passes through an object

All the possible energy levels of electromagnetic radiation

The portion of the electromagnetic spectrum that humans can see

Properties Of Visible Light/modeling Light Waves

Properties of Visible Light/Modeling Light Waves

Authored by Erin Larsen

Science

8th Grade

NGSS covered

Used 1+ times

Properties of Visible Light/Modeling Light Waves

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OPEN ENDED QUESTION

3 mins • 3 pts

What causes the different colors of visible light in the electromagnetic spectrum?

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Answer explanation

different wavelengths of the electromagnetic spectrum

Tags

NGSS.HS-PS4-4

OPEN ENDED QUESTION

3 mins • 3 pts

What can happen to light when it shines on an object?

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Answer explanation

It can be reflected, absorbed, or transmitted through the object.

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NGSS.MS-PS4-2

OPEN ENDED QUESTION

3 mins • 1 pt

A laser beam is pointed into a plane mirror using the setup shown in the diagram below. Describe how the light would behave if the laser beam entered along line 1.

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Answer explanation

The line would be reflected out of the mirror along line V.

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NGSS.MS-PS4-2

OPEN ENDED QUESTION

3 mins • 3 pts

How are reflected waves and refracted waves different?

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Answer explanation

Reflected waves bounce back after striking an object; refracted waves change direction and pass through a different medium, causing the waves to change speeds.

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NGSS.MS-PS4-2

OPEN ENDED QUESTION

3 mins • 3 pts

What objects tend to reflect light, and what objects tend to refract light?

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Answer explanation

Plain mirrors and other smooth surfaces reflect light. Light passing through different mediums, convex lenses, and prisms refract light.

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NGSS.MS-PS4-2

OPEN ENDED QUESTION

3 mins • 3 pts

Describe the path light travels.

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Answer explanation

Light travels in a straight line except at surfaces between different transparent materials (air and water; air and glass) where the light path bends.

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NGSS.MS-PS4-2

OPEN ENDED QUESTION

3 mins • 3 pts

Describe the path light travels.

Evaluate responses using AI:

OFF

Answer explanation

Light travels in a straight line except at surfaces between different transparent materials (air and water; air and glass) where the light path bends.

Tags

NGSS.MS-PS4-2

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Properties of Visible Light/Modeling Light Waves

What causes the different colors of visible light in the electromagnetic spectrum?

different wavelengths of the electromagnetic spectrum

What can happen to light when it shines on an object?

It can be reflected, absorbed, or transmitted through the object.

A laser beam is pointed into a plane mirror using the setup shown in the diagram below. Describe how the light would behave if the laser beam entered along line 1.

The line would be reflected out of the mirror along line V.

How are reflected waves and refracted waves different?

Reflected waves bounce back after striking an object; refracted waves change direction and pass through a different medium, causing the waves to change speeds.

What objects tend to reflect light, and what objects tend to refract light?

Plain mirrors and other smooth surfaces reflect light. Light passing through different mediums, convex lenses, and prisms refract light.

Describe the path light travels.

Light travels in a straight line except at surfaces between different transparent materials (air and water; air and glass) where the light path bends.

Describe the path light travels.

Light travels in a straight line except at surfaces between different transparent materials (air and water; air and glass) where the light path bends.

How do the wavelengths and frequencies of colors change when moving from red to violet through the visible light spectrum?

At one end of the visible light spectrum, red has a longer wavelength and lower frequency. Moving towards the other end, the wavelengths get shorter and the frequencies get higher until reaching violet at the other end.

What is the relationship between the frequency of light and refraction?

The amount or angle of refraction is dependent on the color or frequency of light hitting the surface of a new medium.

How are electromagnetic waves different from sound or water waves?

Electromagnetic waves can travel through space (no medium), but water waves and sound waves require a medium to travel through (mechanical waves).

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