Energy Review

Which is a true statement about heating and cooling water?

• Boiling and freezing water both take an hour.

• It takes less time to boil water than to freeze water into ice.

• It takes less time to freeze water into ice than to boil water.

• It takes the same time to boil water as it does to freeze water into ice.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Although the heat source is at the bottom of the beaker, all of the water is the same temperature. What keeps the water at the top of the beaker the same temperature as that of the bottom?

• Heat from the burner radiates through the liquid and causes even heating.

• Evaporation heats the water at the top and the flame heats the water at the bottom

• The walls of the beaker reflect heat toward the center, so the water heats evenly

• Heated water molecules and steam rise in the beaker, carrying heat by convection.

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NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

What form of energy transfer is taking place in the picture below?

• radiation

• convection

• conduction

• condensation

A plastic bottle of water was placed into a freezer. The next day the bottle was taken out of the freezer. What has most likely happened to the water and the plastic bottle?

• The water changed to a gas, and the bottle shrunk

• The water changed to a solid, and the bottle expanded.

• The water changed to a gas, and the bottle was empty.

• The water changed to a solid, and the bottle was not changed.

Tags

NGSS.MS-PS1-4

An unlit candle was laid on a table directly in front of a hot fireplace. Which most likely explains why the candle melted?

• Heat energy from the fire was radiated through the air into the candle.

• Heat energy from the fire was conducted through the table into the candle.

• Heat energy from the fire was radiated through the floor into the candle.

• Heat energy from the fire was conducted through the air into the candle.

Tags

NGSS.MS-PS1-4

Which best explains how ice melts in a person’s hand?

• The heat from a person’s hand transfers by radiation to the ice, causing it to melt.

• The heat from a person’s hand transfers by conduction to the ice, causing it to melt.

• The cool temperature of the ice transfers by radiation to a person’s hand, cooling it off.

• The cool temperature of the ice transfers by conduction to a person’s hand, cooling it off.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Lee is making simple syrup by dissolving sugar into water. Which action will most likely cause the sugar to dissolve more quickly?

• heating the water

• cooling the water

• increasing the amount of sugar

• decreasing the amount of water

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NGSS.MS-PS1-4

On a hot day in the sun, why does Robert use a foam can holder to keep his drink cool?

• Foam insulates the cold drink.

• Foam reflects cold air from the can.

• Foam reflects heat from the sun off the can.

• Foam conducts heat between the can and the air.

Tags

NGSS.MS-PS3-3

Which would most likely turn gas into a liquid?

• cooling

• boiling

• warming

• freezing

Tags

NGSS.MS-PS1-4

Which best explains why the sun’s rays will warm a lake?

• conduction

• convection

• radiation

Tags

NGSS.MS-ESS2-4