P4 Light and Variables

Ali was standing at a cross junction of a road one morning. Looking at the position of his shadow, at which position was the sun at?

• A

• B

• C

• D

Tags

NGSS.MS-ESS1-1

The diagram shows three similar cylinders, X, Y and Z, placed at different distances in front of a screen. A light source was switched on and the shadows of X, Y and Z were cast on the screen.

Which one of the following diagrams correctly shows the shadows of the cylinders X, Y and Z on the screen?

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Tags

NGSS.MS-PS4-2

Raju wanted to find out whether red bean seeds need sunlight to germinate using the following jars. Which 2 jars of red bean seeds should he use?

• W and X

• W and Y

• X and Y

• Y and Z

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which one of the following pairs of items allows only some light to pass through them?

• Waxed paper and clear plastic

• Tracing paper and clear glass

• Frosted glass and tracing paper

• Whiteboard and hard cardboard

Tags

NGSS.MS-PS4-2

Fatima wants to find out how different types of liquids affect the amount of light passing through it. She sets up the experiment as shown in the diagram.

Which one of the following variables has to be changed in this experiment?

• Type of liquid

• Type of beaker

• Intensity of light

• Distance of the surface of liquid from the torch

Tags

NGSS.MS-PS4-2

Which one of the following graphs shows how the length of the shadow of a flagpole changes at hourly intervals on a sunny day?

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Tags

NGSS.MS-ESS1-1

Judy sets up the experiment as shown. The screen is fixed in a position.

What should Judy do if she wants the shadow on the screen to increase in size? (Choose 2 correct answers)

• Move the object nearer to the screen

• Move the object nearer to the torch

• Move the torch nearer to the object

• Move the torch further away from the object

Tags

NGSS.MS-PS4-2

Danny conducted an experiment to investigate the amount of light that can pass through 3 materials of the same thickness. The materials he used were frosted glass, clear plastic sheet and styrofoam board.

He shone a torch through each of the 3 materials. He used a light sensor to measure how much light has passed through each of them. He then drew a graph to show the amount of light recorded by the light sensor.

Which of the following graphs shows the correct readings?

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Tags

NGSS.MS-PS4-2