Energy in Earth's Process

Marcus is giving a presentation on Earth's energy flow at Science Night. His poster includes this model, which shows Earth's crust, mantle and core. Which sentence can he include as a caption that correctly describes how energy flows in this system?

• Energy flows from the cooler rock at Earth's crust toward Earth's core.

• Energy flows from the warmer rock at Earth's crust toward Earth core.

• Energy flows from the warmer rock at Earth's core towards Earth's crust.

• Energy flows from the cooler rock at the Earth's core towards Earth's crust.

Tags

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• “Conduction” is the transfer of energy between objects that are touching.

• “Convection” is the transfer of energy caused by the circulation of matter due to differences in density.

• “Radiation” is the transfer of energy as light through space or transparent substances.

Which of the following is an example of conduction?

• If you hold a hot cup of tea, your hand will warm up.

• If you heat the air inside a hot air balloon, the balloon will rise.

• If you leave a chocolate bar in a hot car, the chocolate will melt.

• If you leave a glass of water on the counter, the water in the class will evaporate.

Brianna goes for a swim in the ocean. She swims away from shore, and as she begins treading the deeper water, she notices that the water on the surface is much warmer than the water touching her toes. What Earth process explains how the surface water was heated?

• gravity

• convection cells in the ocean

• radiation from the sun

• conduction of heat from Earth's crust

Tags

NGSS.MS-ESS2-4

You have learned that convection currents form in the atmosphere as heat is absorbed.

What process is happening in portion "A" of the model?

• Conduction

• Radiation

• Convection

What process is happening in part "B" of the model?

• Conduction

• Radiation

• Convection

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What process is happening in part "C" of the model?

• Convection

• Radiation

• Conduction

Which layer of the geosphere is described as, "Earth's thin, cool, and rigid outermost rock layer."?

• Core

• Crust

• Mantle

• Interior

About how thick is the hydrosphere?

• about 5 Km

• About 15 Km

• About 20 Km

• About 97%

Tags

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What is the main source of energy in the hydrosphere?

• The heat from the Earth

• The water

• The ocean

• The sun

Tags

NGSS.MS-ESS2-4

The _________ is the layer of gases that surrounds earth

• geosphere

• hydrosphere

• atmosphere

• biosphere

Tags

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