Energy Review

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 kind of energy change occurs when a candle is burning?

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

Tags

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A stove top will cook your food because of ___________.

• convection

• conduction

• radiation

• connection

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The type of heat transfer that happens through direct contact of molecules or particles with each other is ___________________.

• Convection
• Conduction
• Radiation
• insulation.

Tags

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What kind of energy is represented in this picture?

• Thermal
• Potential
• Nuclear
• Mechanical

Tags

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What kind of energy does this device use?

• Chemical
• Electrical
• Thermal
• Chemical

Tags

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What kind of energy is represented in the picture?

• Thermal
• Chemical
• Sound
• Nuclear

Tags

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On a roller coaster, where is maximum potential energy?

• At the bottom of a big hill
• When going around a corner
• When going upside down
• At the top of a big hill

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The ability to do work is

• power
• energy
• thermal
• kinetic

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Stored energy is called ______ energy.

• Kinetic
• Potential
• Pacific
• Safe

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