Energy Test Test

The arrows in the diagrams below represent light. Which diagram best shows how a glass lens refracts light?

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Tags

NGSS.MS-PS4-2

Which of these best demonstrates the reflection of light?

• Looking through the glass of a large window

• Looking at an image formed on a silver spoon

• Looking at a star on a clear night

• Looking at a lightbulb that is glowing

Tags

NGSS.MS-PS4-2

When light travels through air into a prism, it bends and separates into many colors. In which other situation does light bend?

• When light hits a mirror

• When light passes through outer space

• When light moves through air into water

• When light hits a wall

Tags

NGSS.MS-PS4-2

Which of these changes to the electric circuit shown above will cause the lightbulb to light up?

• Straightening the wire so that the current can flow more easily

• Making the length of wire the same on both sides of the lightbulb

• Adding a switch and more wire so that the current can flow more easily

• Turning one battery so that its positive end connects to the other battery's negative end

Tags

NGSS.MS-PS3-5

A string of lights with small bulbs is shown below. The bulbs are connected by wire that is covered with an insulator. When the lights are on, electricity travels in -

• an incomplete path

• a sound wave

• a light ray

• a complete circuit

Most cars have lights, power locks, radios, and other equipment that use electricity. Electric circuits power this equipment. Each circuit has a fuse that completes it. The picture below shows one type of fuse a car may have. Which of these describes one thing that could happen if the wire in a car fuse burns out?

• The car's power windows will open faster.

• The car's turn signal will blink too slowly.

• The car's radio will not work.

• The car's lights will burn brighter.

The model shows a special glass fiber that is thinner than some metal wires. When light enters one end of the fiber, it moves through the fiber as shown. After the light leaves the fiber, it travels -

• in a curve

• in a straight line

• back into the fiber

• around the fiber

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Lasers produce a beam of light that can be focused on a small area. A teacher uses two mirrors to shine a beam of light from a laser onto a box. Which diagram shows how the teacher should position the two mirrors?

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Tags

NGSS.MS-PS4-2

When the teacher lights the candle in a dark room, some of the candlelight shines through the hole. Which diagram best shows how the light appears on the opposite wall of the box?

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Tags

NGSS.MS-PS4-2

To recharge the battery for later use without lighting the bulb, which of the following switches should be closed?

• Switches R, S, and T

• Switch S only

• Switches R and T only

• Switches R and S only

Tags

NGSS.MS-PS3-5