Braxton chapter 2 energy conversions

The function of a radio is to ____ music.

Are LED lights more or Less efficient than light bulbs?

Tags

NGSS.MS-PS3-3

What is the input energy for an electrical lamp?

• Solar energy
• Mechanical energy
• Chemical energy
• Electrical energy

LED Lights WASTE MORE or LESS energy being converted into thermal energy

• more

• less

• same

Tags

NGSS.MS-PS1-4

LED lights are ______efficient than light bulbs because they waste less energy being converted to thermal energy; so more energy can be used for light.

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NGSS.MS-PS3-5

What is the output energy for an electrical motor?

• Motion energy

• Chemical energy
• Thermal energy
• Nuclear energy

What is the output energy for an electrical fan?

• Motion Energy

• Chemical Energy
• Nuclear Energy
• Thermal Energy

Tags

NGSS.MS-PS3-1

What is the output energy for an electrical STOVE?

• Motion Energy

• Chemical Energy
• Nuclear Energy
• Thermal Energy

Tags

NGSS.MS-PS3-4

During storms, towns may experience blackouts because something goes wrong with their electrical system. What is the best evidence that would support the claim that something went wrong with their electrical system?

• After the blackout, all of the lights came back on.

• The storm knocked down all of the power lines.

• The electrical grid connected to the skyscraper fails to work properly.

• The mayor of the town turns the electricity off to save energy.

The picture shows energy converters used in homes every day. Which statement describes the relationship between all of the converters pictured?

• They all have an output energy of motion.

• Electrical energy is the input energy for all the devices.

• Sound energy is converted to electrical energy in all the devices.

• Thermal energy is the input energy for all the devices. 

Tags

NGSS.MS-PS3-4