Review Law of Conservation of Energy

What type of potential energy did your body have before you started the Heat It Up Lab experiment?

• Gravitational

• Chemical

• Nuclear

• Stored Mechanical

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NGSS.MS-PS3-2

Which of the following forms of kinetic energy were NOT made with the movement of rubbing your hands during the Heat It Up Lab?

• Radiant

• Motion

• Thermal

• Sound

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NGSS.MS-PS3-5

What were the atoms/molecules in your hands doing as they made thermal energy during the Heat It Up Lab?

• The atoms/molecules were creating light waves

• The atoms/molecules were creating noise waves

• The atoms/molecules were moving faster and faster

• The atoms/molecules were moving slower and slower

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NGSS.MS-PS3-4

NGSS.MS-PS1-4

The law of conservation of energy says that energy cannot do which two things?

• Be radiant & thermal

• Be kinetic & potential

• Be destroyed & created

• Change two forms

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NGSS.MS-PS3-5

What does the law of conservation of energy say energy can do?

• Change form

• Be created

• Be destroyed

• Be kinetic & potential

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NGSS.HS-PS3-3

What is the Law of Conservation of Energy?

• Most forms of energy are eventually transformed into thermal energy

• Systems lose energy as heat

• Energy cannot be created or destroyed, only changed form

• A fire gives off heat as it burns

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NGSS.MS-PS3-5

NGSS.MS-PS3-4

There are five words that are considered the most important words in the law of conservation of energy. What are they?

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NGSS.MS-PS3-5

Most kinetic energy exchanges usually end with thermal energy. Does that mean the energy disappears?

• Yes, where could it possibly go next?

• Yes, all energy eventually disappears.

• No, as the vibrating molecules spread apart they become kinetic energy that could move again in the future.

• No, as the vibrating molecules spread apart they become potential energy that could move again in the future.

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NGSS.MS-PS3-5

NGSS.MS-PS1-4

What is kinetic energy?

• When time effects a lab

• Moving items that do work

• Non-moving items store the ability to do work in the future

• The independent variable in a lab

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NGSS.MS-PS3-5

NGSS.MS-PS3-1

What is potential energy?

• When time effects a lab

• Moving items that do work

• Non-moving items store the ability to do work in the future

• The independent variable in a lab

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NGSS.MS-PS3-2