Properties of Light and Electricity, 4-5

1. Light is —

• power.

• energy.

• heat.

• reversible.

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NGSS.MS-PS4-1

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The light energy that you can see is —

• the visible spectrum.

• a prism.

• ultraviolet energy.

• the opaque light.

What are three examples of objects that actually give off visible light?

• the sun, the moon, a star

• a flashlight, a battery, a light bulb

• a candle flame, a match, a mirror

• the sun, a flashlight, a candle flame

What factors must be in place before an object is visible?

• It must either be a source of light or it must reflect light.

• It cannot be a source of light.

• It cannot reflect any source of light.

• It must be a source of light that can never reflect light.

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NGSS.4-PS4-2

Why is it necessary to use a telescope to observe objects in outer space?

• Telescopes gather more light and make the far away objects in outer space brighter and more visible.

• Telescopes are long and thin and reach farther in the sky, this makes it easier to see in outer space.

• Looking at objects in outer space without telescopes can cause damage to your eyes.

• Looking through a telescope helps your eyes to focus on one area of outer space, without it you would not be able to pick just one object.

The brightness of light can be described as —

• all the different colors of the light put together.

• the intensity of the light or the total amount of energy.

• the degree of electricity present in the light waves.

• the ability to glow for long periods of time.

The moon’s orbit around Earth is not a perfect circle so sometimes the moon orbits slightly closer to Earth. Why do these close periods give us a brighter moon?

• The closer the light source, the bigger and more intense the source becomes.

• The closer the light source, the less light it emits and the more intense it becomes.

• The closer the light source, the more intense different colors emit from the source.

• The closer the light source, the brighter and more intense the light.

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NGSS.MS-ESS1-1

What does this diagram represent?

• A. A prism – all of the colors of the rainbow pass through and join together to form white light.

• B. A spectrum – white light passes through a prism and is separated into the different colors of the rainbow.

• C. A rainbow – all of the colors join together to form the color sequence called “Roy G Biv”.

• D. A refraction – all of the colors join together to shine brighter.

The visible spectrum is made up of what colors?

• black, gray, brown, white

• red, pink, blue, purple, violet, black, gray, brown

• red, gold, silver, copper, blue

• red, orange, yellow, green, blue, indigo, violet

A (a)   separates the various colors that make white light.

• microscope

• mirror

• prism

• telescope