Energy Transfer

What causes the tectonic plates of earth to continually move?

• Convection currents in the mantle

• Volcanic and seismic activity in the crust

• Strong winds and stroms

• Rotation of the solid core

Tags

NGSS.MS-ESS2-3

A solar cooker uses sunlight to heat food. This product is most likely an effective design solution for a situation when...

• electricity is unavailble

• cooked food is rarely eaten

• food needs to be heated quickly

• renewable energy is most widely used

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-PS3-3

Which statement is correct regarding the relationship between the temperature and the density of water?

• The density of water is independent of the temperature.

• The density of water decreases with a decrease in temperature.

• The density of water decreases with an increase in temperature.

• The density of water first increases and then decreases with an increase in temperature.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Guillermo studied electricity as it traveled through circuits. He planned to light two bulbs at the same time using only one battery. Which diagram shows what he should build?

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Tags

NGSS.MS-ETS1-1

Scientist estimate that the temperature of Earth's core is as high as 6000 degrees celcius. Whic best explains how heat from the core reaches the surface?

• Hot materials in the mantle circulate the same way warm air rises and cool air sinks in a heated room.

• Energy is released as molecules in the mantle from new compounds that flow toward the crust.

• Energy from atoms vibrating near the core passes through the mantle until it reaches the crust.

• Heat from the core radiates through the mantle the same way sunlight passes through space.

Tags

NGSS.MS-ESS2-1

How does the transfer of energy from the Sun to Earth compare with the way energy is distributed in ocean water?

• Energy from the sun is transferred through convection, while energy in ocean water is distributed by conduction.

• Energy from the Sun is transferred through radiation, while energy in ocean water is distributed by convection.

• Energy from the Sun is transferre through conduction, while energy in ocean water is distributed by radiation.

• Energy from the Sun is transferred through radiation, while energy in ocean water is distributed by conduction.

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NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Which statement best explains the difference seen between the two balloons during the experiment?

• Air contracts when cooled but is not affected by warming.

• Cooling causes air to contract and heating causes air to expand.

• Balloons put more pressure on cold air than room temperature air.

• Freezing causes balloons to contract and thawing causes them to expand.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What can the students conclude?

• Cloth is a better insulator than metal foil.

• Paper is a better insulator than cloth.

• Plastic film is a better insulator than paper.

• Metal foil is better insulator than plastic film.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Electrical wires are coated with a rubber or plastic because these materials are good...

• resistors

• magnets

• insulators

• conductors

Tags

NGSS.MS-PS2-3

A child placed an ice cube on the sidewalk on a warm day. The ice cube soon melted to form a puddle. What process caused the ice cube to melt?

• Heat transferred through the ice cube by convection.

• Heat transferred from the air to the ice cube by radiation.

• Heat transferred from the air and the pavement by conduction.

• Heat transferred through the ice cube into the pavement by conduction.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4