Unit 2.2 Energy Transfer on Earth Review

• It causes the conduction of ocean currents, circulating warmer water near Earth's equator toward Earth's colder poles.

• It causes the convection of air masses, as warm air masses rise and cool air masses sink in a circular pattern.

• It absorbs and moves through solid substances that are touching each other through convection.

• It reflects back into space by conduction, traveling through the vacuum back to the Sun.

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• by conduction, as heat travels from the atoms in the rock to the atoms in the person's hand

• by convection, as heat from the rock flows through empty space into the person's hand

• by convection, as thermal energy circulates atoms in the person's hand

• by radiation, as the atoms in the hand excite the atoms in the rock

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Lava flowing along Earth's surface can cause trees and houses to catch on fire, even though the lava does not have flames. How does the lava cause some things to catch on fire?

• Through conduction, in which the lava transfers thermal energy directly to solid objects.

• Through convection, in which the lava transfers thermal energy through the air into solid objects.

• Through evaporation, in which the lava transfers thermal energy through water into solid objects.

• Through radiation, in which the lava transfers thermal energy underground and into solid objects.

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• convection

• conduction

• evaporation

• radiation

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• through evaporation, the transfer of thermal energy through the movement of air

• through radiation, the transfer of thermal energy through the movement of liquids

• through conduction, the transfer of energy from one atom directly to the next

• through convection, the transfer of energy from the air to the water

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• Convection is causing warm air of higher density to collect around the hand, causing the air above it to decrease in density.

• Conduction of heat from the air is causing a rise in thermal energy inside the hand, lowering the air density.

• Convection is causing warm air of a lower density around the hand to rise above the higher density air.

• Radiation of thermal energy in the hand is causing the air around it to become more dense.

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• conduction

• convection

• radiation

• reflection

A warm rock is in contact with the cooler ground.  Which of the following will happen?

• Energy in the form of heat will flow from the ground to the rock, and the temperature of the rock will decrease

• Energy in the form of heat will flow from the rock to the ground, and the temperature of the rock will decrease

• Energy in the form of heat will flow from the ground to the rock, and the temperature of the rock will increase

• Energy in the form of heat will flow from the rock to the ground, and the temperature of the rock will increase

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• 1

• 2

• 3

• 4

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• Through conduction because of the two different temperature air masses colliding.

• Through radiation because the Sun heats the land faster than the sea.

• Through convection because the different temperature air masses rise and fall due to their different densities.

• Through conduction, convection, and radiation.

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