Unit 8 Lesson 1 Energy Transfer

Which one is not a type of energy transfer?

• conduction

• convection

• evaporation

• radiation

Answer explanation

There are 3 main types of energy transfer: Conduction, Convection, and Radiation. Each type of energy transfer is a part of our weather system. Radiation from the Sun heats the surface of the Earth. This heat is then re-radiated into the atmosphere and helps heat the air. Heat radiated from Earth is called terrestrial radiation. The air that is touching the ground is heated in part by conduction. Once the air at Earth's surface is heated it rises, because it is less dense. This causes convection currents to form that heat our air and affects our weather everywhere.

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NGSS.MS-PS3-3

NGSS.MS-PS3-4

What type of energy transfer heats Earth's surface?

• conduction

• convection

• radiation

What type of energy transfer heats the air that is touching the ground?

• conduction

• convection

• radiation

What forms due to rising air in the atmosphere?

• convection currents

• conduction currents

• radiation currents

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NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Why does warm air rise?

• it is less dense

• it is more dense

• density has nothing to do with it

What is heat re-radaited from Earth called?

• solar radiation

• Earth radiation

• internal radiation

• terrestrial radiation

What does internal energy refer to?

• Heat coming from the inside of the sun

• Heat coming from the inside of the earth

• Heat coming from plants and animals

Answer explanation

Internal Energy refers to heat coming from Earth's interior. Radioactive decay, along with the heat left over from Earth' formation contribute to Earth's internal energy. External energy is primarily solar energy, energy from the sun.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which on is not a factor that contributes to Earth's internal energy?

• coal buring underground

• radioactive decay

• heat left over from Earth's formation

What is the major source for external energy?

• the moon

• Mars

• the sun

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NGSS.MS-ESS2-4

NGSS.MS-LS1-6

What type of energy is in the form of electromagnetic waves?

• convection

• conduction

• radiation

Answer explanation

Radiation is energy transfer in the form of electromagnetic waves. It can travel through empty space (vacuum), air (gas), water (liquid) and depending on the type of radiation even solids. The electromagnet spectrum is the classification of radiation based on wavelength, frequency and amplitude. Incoming Solar Radiation is commonly called insolation. In simple terms it means radiation from the sun.

Tags

NGSS.MS-PS4-2