EOL: S 2.10-2.13 - Energy #2

S 2.10: Label each energy transformation (change) correctly using the letters as your guide. (a- is the left, b- the middle, and c- the right) BE CAREFUL YOU MAY NEED TO SCROLL TO SEE THE ENTIRE LIST OF OPTIONS!

a- hand moves from hanging at your side to grab bow string

b- hand is pulling back bow string

c- bow string released and send arrow flying

a

b

c

kinetic E to elastic potential E

kinetic to physical energy

potential to chemical potential

chemical potential E to kinetic E

elastic potential E to kinetic E

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S 2.10: Energy cannot be ​​ (a)   ​or ​ destroyed. It can only be ​ (b)   ​ or transformed.

​

• created
• smashed
• transferred
• charged
• opened
• reviewed

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S 2.10 Organize these examples of energy tranformation into correct category,

Groups:

(a) Example from chemistry class

,

(b) Example from daily life

• washing machine
• radiometer

• vacuum cleaner
• microwave
• smashing spheres

• bouncy ball rockets

• hand boiler

• toaster
• stirling engine (blue engine on beaker w hot water)

• blender

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S 2.10 The key idea of the the law of conservation of energy is

• Friction produces thermal energy.

• People must conserve energy.

• The total amount of energy in a system is constant.

• Energy is the ability to cause change

Answer explanation

The concept of (a)   is crucial in the law of conservation of energy.

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S 2.10 Identify the energy change at each location. BE CAREFUL YOU MAY NEED TO SCROLL TO SEE THE ENTIRE LIST OF OPTIONS!

a- hot plate is plugged in and heats up

b- water vapor rises and affects the metal circle

c- metal rods move up and down to make propellor spin

a

b

c

thermal to mechanical

mechanical to different type mechanical

electric to thermal

potential to thermal

chemical potential to gravitational

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S 2.10 True or False ---- The total amount of energy in a system will change depending on its surroundings.

• true
• false

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S 2.10: Label each energy transformation (change) correctly for each of the actions. BE CAREFUL YOU MAY NEED TO SCROLL TO SEE THE ENTIRE LIST OF OPTIONS!:

a- hand moves

b- handle spins the gears

c- gears spin the magnet causing electricity

d- electricty turns on light

e- electricity turns on fan

a

b

c

d

e

mechanical E to electrical E

electrical E to light E

electrical E to mechanical E

kinetic E to mechanical E

chemical potential E to kinetic E

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S 2.11: Kinetic energy is...

• the energy stored in an object at rest
• the energy of a chemical reaction

• the energy associated with an object's speed

• the energy of an object in motion

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S. 11 When a roller coaster is at the bottom of a hill it has

• high potential energy

• high kinetic energy

• low kinetic energy

• equal amounts of kinetic and potential energy

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NGSS.HS-PS3-2

S 2.11: Which of the following is an example of kinetic energy?

• A book sitting on a shelf

• A car driving down the street

• A compressed spring

• A battery storing charge

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