Forces and Energy Review

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

• destroyed, destroyed
• created, saved
• created, destroyed
• lost, found

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

Energy transformations occur when...

• energy is created through conduction
• energy changes from one form to another
• two forces slide together that are touching
• a chemical reaction takes place

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which energy transformation occurs in a toaster?

• chemical to electric
• electric to thermal
• kinetic to chemical
• thermal to potential

Tags

NGSS.MS-PS3-5

The purpose of the solar panels is to change light energy into ____________.

• light energy
• electrical energy
• chemical energy
• mechanical energy

Tags

NGSS.MS-PS3-5

Electrical -> Mechanical -> Sound 

• A triple beam balance measuring an object’s mass
• A pencil sharpener plugged into a wall outlet
• A projector displaying a diagram on the screen
• A working flashlight used to light up a dark corner

Tags

NGSS.MS-PS4-1

This shows energy changing from

_______ to _______.

• Sound to wind

• Thermal to heat

• Mechanical to Electrical

• Electrical to Mechanical

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NGSS.MS-PS3-5

This shows energy changing from

_______ to _____ forms

• Electrical to Sound

• Thermal to Electrical

• Electrical to Thermal

• Thermal to Light

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

What type of energy transformations happen when using a flashlight? Read carefully and choose the BEST answer.

• Electrical to light to sound

• Chemical to electrical to light

• Mechanical to light to electrical

• Electrical to chemical to light

What energy transformations take place when a battery-operated radio is in use?

• Electrical to chemical to light
• Sound to chemical to mechanical
• Chemical to electrical to sound
• Light to electrical to thermal

Hydroelectric dams and water wheels can both use moving water to create power for homes. What energy transformation occurs in these devices?

• Mechanical energy to electrical energy

• Electrical energy to sound energy

• Mechanical energy to thermal energy

• Thermal energy to chemical energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5