Conservation of Energy and Energy Transfers

According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 

• destroyed, destroyed

• created, saved

• created, destroyed

• lost, found

Tags

NGSS.MS-PS3-5

What forms of energy are involved in hammering a nail into wood? Select all that apply

• Sound

• Kinetic

• Electrical

• Nuclear

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NGSS.MS-PS3-5

A nuclear power plant captures the energy created by the fission of the nuclei of uranium atoms and uses the generated energy to boil water. The boiled water creates steam that spins a series of turbines as it rises. As each turbine spins, it generates power that is sent into the power grid. Choose the correct sequence to fill in the blanks below. The uranium atoms contain __________ energy. The heat from their fission increases the __________ energy of the water. The spinning of the turbines is __________ energy that then generates __________ energy used in people’s homes.

• nuclear, thermal, kinetic, electrical

• nuclear, kinetic, thermal, electrical

• nuclear, electrical, thermal, kinetic

• nuclear, electrical, kinetic, thermal

Tags

NGSS.HS-PS3-4

Which of these has elastic potential energy?

• a vase sitting on a shelf

• a stretched rubber band

• a child moving down a slide

• sugars stored in the molecules of food

A hockey player uses her stick to hit a hockey puck. Which statement describes the overall energy transfer?

• Energy is transferred from the stick to the puck.

• Energy is transferred from the player to the puck.

• Energy is transferred from the puck to the player.

• Energy is transferred from the stick to the player.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What energy transformation takes place when a hair dryer is used?

• Energy from the sun is transformed to chemical energy.

• Sound energy is transformed to thermal energy and electrical energy.

• Electrical energy is transformed to mechanical, sound and thermal energy

• Electrical energy is transformed to thermal energy and sound energy.

Tags

NGSS.MS-PS3-5

Which items would have this energy transformation: light energy -> chemical energy?

• tree growing fruit

• person running

• solar calculator

• windmill turning

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When a car burns gasoline it creates hot air to move the pistons in the engine, which causes the car to move. What energy transformation occur from the fuel to the movement of a car?

• thermal energy to mechanical energy

• thermal energy to chemical energy to mechanical energy

• chemical energy to thermal energy to mechanical energy

• chemical energy to electrical energy

Tags

NGSS.MS-PS3-5

The roller coaster cart has the most kinetic energy at position-

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

When a roller coaster is at the top of a hill it has

• high potential energy

• high kinetic energy

• low potential energy

• equal amounts of kinetic and potential energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2