Energy Types and Law of Conservation of Energy

According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?

• The total amount of energy is conserved

• The total amount of energy is less after a reaction

• The total amount of energy is more after a reaction

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

The hand generator works by turning the handle which lights up the bulb. What energy transformation occurs as the handle is turned?

• Thermal to electrical

• Electrical to mechanical

• Mechanical to electrical to light

• Light to electrical

A teacher rubbed a match against a piece of sandpaper. The match started to burn. Which statement best describes the energy changes that occurred?

• The chemical energy stored in the match changed to thermal energy and light energy.

• The thermal energy stored in the match changed to light energy and chemical energy.

• The light energy and thermal energy stored in the match changed to mechanical energy.

• The light energy and thermal energy stored in the match changed to chemical energy.

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

The Law of Conservation of Energy states:

• Energy can created or destroyed but not transformed 

• Energy cannot be created or destroyed, it can only transformed

• Energy can't be created, destroyed or transformed

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NGSS.MS-PS1-5

The Law of Conservation of ​ ​ (a)   states that energy ​ (b)   be ​created or ​ (c)  

• Energy

• cannot

• destroyed

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

The law of conservation of energy states that energy ​ (a)   be created or destroyed, but that it ​ (b)   change forms or move.

• can not

• can

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NGSS.MS-PS3-4

By the law of conservations of ​ (a)   ​, energy cannot be created or ​ (b)   .

• destroyed

• energy

• matter

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NGSS.MS-PS3-5

The Law of ​ (a)   of ​ (b)   states that energy cannot be ​ (c)   or ​ (d)   , only ​ (e)   .

• Conservation

• Energy

• created

• destroyed

• transformed

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

The law of ​ ​ (a)   of energy states that ​​ (b)   can ​ neither be created nor ​​ (c)   - only converted from one form of ​ energy to another.

• conservation

• energy

• destroyed

• mass

• used

• usage

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NGSS.MS-PS1-5

The ​ (a)   of ​ (b)   of​ (c)   says that energy cannot be ​ (d)   or destroyed only transformed from one form to another.

• law

• conservation

• energy

• created

• mass

• volume

• theory

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NGSS.MS-PS3-5