Forms of Energy

One type of energy is the result of waves that travel through matter and cause particles to vibrate. Which type of energy is this?

• Sound

• Electrical

• Chemical

• Mechanical

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

A student turns on an electric lamp. She notices that the energy from the electricity is transformed into two other forms. What are these two forms?

• Light and Mechanical

• Light and Electricity

• Light and Heat

• Light and Motion

A student asks her mother to help her make tea. They put a tea kettle on a hotplate and turn it on. After about 10 minutes, the tea kettle starts to whistle. What energy transformations have taken place?

• Electric to sound to light

• Sound to heat to light

• Electric to chemical to sound

• Electric to heat to sound

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NGSS.MS-PS3-3

NGSS.MS-PS3-5

Batteries store energy in the form of chemical energy. The chemical energy is converted into electrical energy, which can be used to create motion. Which of these is a battery-powered item where the energy of the battery is used to create motion?

• Fan

• Cell phone

• Flashlight

• Laptop

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

Jason stretches a rubber band between his fingers. When he plucks the rubber band, it makes a sound. Which best explains why the rubber band makes a sound when Jason plucks it?

• It heats the air.

• It vibrates the air.

• It absorbs energy from the air.

• It releases molecules into the air.

Drawings X and Y show light rays striking a block. Which sentence best describes what happens to light in each drawing?

• Light is absorbed in drawing X and transmitted in drawing Y.

• Light is reflected in drawing X and bent (refracted) in drawing Y.

• Light is bent (refracted) in drawing X and reflected in drawing Y.

• Light is transmitted in drawing X and absorbed in drawing Y.

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NGSS.MS-PS4-2

Juan set up an experiment, making an electromagnet by wrapping coils of wire around a nail and attaching a wire to a battery. Juan tested the electromagnet by seeing how many paperclips it could pick up. For each trail, he changed the number of times the wire was coiled around the paperclip. The results are shown in the table below. What explanation could Juan make based on the data in the table?

• With 30 coils, the electromagnet will most likely pick up 30 paperclips.

• Increasing the number of coils by two times, increases the number of paperclips picked up by two times.

• The electromagnet gets stronger as more coils are added.

• The paperclips are becoming more magnetized as the experiment goes on.

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NGSS.MS-PS2-2

NGSS.MS-PS2-3

Which of the following is an observation rather than an opinion?

• In a lab, it's simple to meausre th volume of liquids such as vinegar.

• Vinegar leaves a fresh scent when it is used to remove spots on mirrors.

• Baking soda is great to use for cleaning counter tops or sinks.

• At room temperature, vinegar is a liquid and baking soda is a solid.

When is light most likely to move in a straight line?

• When moving from a flashlight into water.

• When moving from the Sun into a mirror.

• When moving from a candle into a hallway.

• When moving from a lamp into a person's hand.

Tags

NGSS.MS-PS4-2

Jack is completing an experiment comparing the length of a guitar string to the pitch it produces. He makes a chart of his results. What can Jack conclude about how the length of the guitar string affects the pitch?

• The shortest string will vibrate quickly and produce a high-pitched sound.

• The shortest string will vibrate slowly and produce a low-pitched sound.

• The longer string will vibrate quickly and produce a low-pitched sound.

• The longer string will vibrate slowly and produce a high-pitched sound.