6.2 Open Sci Ed Thermal Energy Review

Front

What is the independent variable in an experiment?

Back

The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

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NGSS.MS-PS2-2

NGSS.MS-PS3-4

Front

Define a closed system in thermodynamics.

Back

A closed system is one in which no matter can enter or exit, but energy can be exchanged with the surroundings.

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NGSS.HS-PS3-4

Front

What is a controlled variable in an experiment?

Back

A controlled variable is a factor that is kept constant to ensure that the results of the experiment are valid.

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NGSS.MS-PS2-2

Front

What process occurs when gas molecules turn into a liquid?

Back

The process is called condensation.

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NGSS.MS-PS1-4

Front

How do you calculate the mean of a set of numbers?

Back

To find the mean, add up all the numbers and then divide by the total count of the numbers.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance, which is related to its temperature.

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NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Front

Explain the concept of heat transfer.

Back

Heat transfer is the movement of thermal energy from one object or substance to another due to a temperature difference.

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

What are the three methods of heat transfer?

Back

The three methods of heat transfer are conduction, convection, and radiation.

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NGSS.MS-PS3-3

Front

What is conduction?

Back

Conduction is the transfer of heat through a solid material without any movement of the material itself.

Front

Define convection.

Back

Convection is the transfer of heat by the movement of fluids (liquids or gases) due to differences in density.

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NGSS.MS-ESS2-6