5.8C Light

Michael puts his straw in the glass of water above. He notices that the straw appears to be bent or broken when he looks at it from the side of the glass. Why is that?

• The light waves reflect as they travel from air through the glass and water.

• The light waves are transformed into heat energy as they leave the glass.

• The light waves refract as they travel from air through the glass and water.

• The straw absorbs the light that passes through the water.

Tags

NGSS.MS-PS4-2

Talia has a cardboard privacy desk divider. She cuts a hole in one side of the divider. Then she places a candle outside the divider like this. Talia makes the room dark and lights the candle. Some candlelight shines through the hole. Which of these models correctly demonstrates how the light behaves?

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Tags

NGSS.MS-PS4-2

Shyla and Nick model how light travels using a flashlight, cardboard, and a mirror. They carry out these steps in a dark room. • Shyla shines a flashlight through a hole in a piece of cardboard. • Nick observes a narrow beam of light continue until it reaches the mirror. Which statement explains why the light does not continue past the mirror?

• Light does not travel very far.

• The mirror absorbs all the light.

• The light is refracted back to the flashlight.

• Light travels in a straight line and cannot move around the mirror.

Tags

NGSS.MS-PS4-2

Elijah does a test with a glass of water and a straw. He places the straw in the center of the water glass. He makes a sketch of his observation and records four statements to try to explain what he observes. Which statement correctly explains why the lower part of the straw appears different in size from the upper part? Select ONE correct answer.

• The light rays are reflected when they travel through water and air.

• The light rays traveling through the water and then into the air are refracted.

• The light rays that travel through air after moving through water are reduced.

• The light rays that travel through water are enlarged as they move through the air.

Which of the following correctly describes the properties of light: reflection and refraction, along with an example for each?

• Reflection is when light bounces off a surface, like a mirror; refraction is when light bends as it passes through water.

• Reflection is when light bends as it passes through water; refraction is when light bounces off a surface, like a mirror.

• Reflection is when light disappears in darkness; refraction is when light is absorbed by a black object.

• Reflection is when light passes straight through glass without changing direction; refraction is when light is blocked by an opaque object.

Tags

NGSS.MS-PS4-2

Which of the following parts of the camera reflects light?

• The mirrors

• The lens

• The viewfinder

• The shutter button

What is the property of light that is causing the landscape and clouds to appear in the lake in the bottom half of this picture?

• refraction

• absorption

• reflection

• darkness

What causes the fish’s position to appear to change?

• The fish reflecting the light

• The water blocking the light

• The fish focusing the light

• The water refracting the light

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

A spoonful of salt is dissolved in a glass of water. How will the mass of the saltwater solution compare to the mass of the water before the salt was added to it?

• The salt water will have less mass than the water.

• The salt water will have more mass than the water.

• The salt water will have the same mass as the water.

• The mass of the water and salt water must be measured in order to know.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Joseph needs a device that converts electrical energy to sound and light energy. He evaluates several options. Which of these devices meets Joseph’s requirements?

• oven

• flashlight

• radio alarm clock

• television remote control

Tags

NGSS.MS-ETS1-2