Big Ideas 10 and 11 Energy and Energy Transformations

What is light?

• a form of energy which our sense of touch can detect

• a form of energy which our sense of taste can detect

• a form of energy which our sense of sight can detect

• a form of energy which our sense of hearing can detect

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NGSS.MS-LS1-8

How does light move?

• Light travels in a crooked line until it strikes an object or travels from one material to another

• Light travels in a curvy line until it strikes an object or travels from one material to another

• Light travels in a straight line until it disappears

• Light travels in a straight line until it strikes an object or travels from one material to another

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NGSS.MS-PS4-2

When light strikes an object, what THREE things can happen?

• The light can be absorbed

• The light can get stronger before it disappears

• The light can be reflected

• The light can be bent (refracted)

• The light can be turned to a gas

Tags

NGSS.MS-PS4-2

What happens when light hits a shiny surface, like a mirror?

• The light is reflected.

• The light is refracted.

• The light is absorbed.

• The light disappears.

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NGSS.MS-PS4-2

Light reflecting off of objects is what allows us to ______.

• taste

• hear

• see

• eat

Tags

NGSS.MS-PS4-2

Why does a pencil appear to bend when it is partially in a glass of water?

• Light energy speeds up when it travels from one material to another (air to water), and this shift in speed causes the pencil to appear to bend or break.

• Light energy slows down when it travels from one material to another (air to water), and this shift in speed causes the pencil to appear to look all in one piece.

• Light energy slows down when it travels from one material to another (air to water), and this shift in speed causes the pencil to appear to bend or break.

• Light energy slows down when it travels from one material to another (air to water), and this shift in speed causes the pencil to dissolve in the water.

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NGSS.MS-PS4-2

Why should you wear a white t-shirt outside on a hot, sunny day instead of a black t-shirt? (select the THREE reasons)

• A black t-shirt will absorb the Sun’s light and warm you up.

• White looks better on most people than black does, and it will not absorb heat.

• A white t-shirt will reflect the Sun’s light and keep you warmer.

• When light is absorbed by an object, the energy is converted to heat.

• A white t-shirt will reflect the Sun’s light and keep you cooler.

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NGSS.MS-PS3-3

Objects that give off light (the Sun, light bulbs, oven coils, fire, etc.) often also give off _____.

• heat

• gas

• crystals

• cold

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NGSS.MS-PS1-4

NGSS.MS-PS3-3

Why does it feel cooler under the shade of an umbrella?

• Energy from the Sun can cool objects, but when sunlight is not present, heat may be gained. The umbrella blocks the Sun’s light, so that is why it feels warmer in the shade.

• Energy from the Sun can heat objects, but when sunlight is not present, heat may be lost. The umbrella blocks the Sun’s light, so that is why it feels cooler in the shade.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which form of energy is produced by the movement of molecules?

• heat (thermal)

• light

• sound

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NGSS.MS-PS3-1

NGSS.MS-PS3-4