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Some students observing a classroom device being used, noticed the below energy transformations. 
Electrical → Mechanical → Sound
Which device were the students most likely observing?

• 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.

Which of these is an example of light energy being transformed into chemical energy?

• A glow stick lights up when broken.
• Water heated by the sun evaporates.
• A plant makes sugar in the sunlight.
• A battery causes a buzzer to vibrate.

Tags

NGSS.MS-LS1-6

Which kind of energy change occurs when a candle is burning?

• Chemical to light.
• Light to electrical.
• Solar to heat.
• Chemical to electrical.

Which of the following best describes the energy transformations that occur when a flashlight that runs on batteries is turned on?

• chemical → light → electrical
• electrical → light → chemical
• light → electrical → chemical
• chemical → electrical → light

The picture shows a microwave oven. As a microwave oven is operated, electrical energy is transformed into all of the following types of energy EXCEPT —

• Solar
• Light
• Thermal
• Mechanical

What energy conversions take place when you vigorously rub your hands together?

• friction => heat

• chemical => thermal

• mechanical => thermal

• kinetic => chemical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What type of energy is food energy stored in your muscles?

• mechanical

• nuclear

• thermal

• chemical

Tags

NGSS.MS-LS1-7

Muscles operate to push the pedals on a bicycle causing the wheels to turn. What type of energy being represented?

• mechanical

• physical

• thermal

• chemical

Strong wind spinning a wind turbine can generate which type of energy?

• mechanical

• electrical

• thermal

• chemical

What is the energy transformation?

• Kinetic to Mechanical and Electrical
• Chemical to Thermal and Electromagnetic (light)
• Electromagnetic to Chemical and Electrical
• Kinetic to Sound and Chemical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2