Energy Transfer and Transformation

What does the Law of Conservation of Energy state?

• energy is always created, but not destroyed

• energy cannot be created or destroyed

• energy cannot be created, but can be destroyed

• energy is always being created and destroyed

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Which action below is converting electrical to thermal energy?

• An electric vacuum cleaner

• An electric toothbrush

• An bread toaster

Energy of motion is

• potential energy

• kinetic energy

• elastic energy

• chemical energy

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______________________ occurs when energy changes from one form to another.

• Energy transformation

• Energy transfer

• Energy balance

• Energy equilibrium

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How does heat transfer when noodles are cooked on the stove?

• Heat moves from the water to the noodles to the stove

• Heat moves from the stove to the air to the noodles

• Heat moves from the stove to the pot to the water to the noodles

• Heat moves from the pot to the air to the stove to the noodles

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The energy transformation that takes place when a flashlight is turned on is...

• Chemical - electrical - light
• Chemical - light - electrical
• Electrical - thermal - light
• Nuclear - light - electrical

Which of the following shows the correct order of the energy transformations that occur when green plants produce their food from the Sun’s energy?

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

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What type of energy is made by vibrations and does not travel through empty space?

• sound energy

• light energy

• electrical energy

• chemical energy

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Energy transfer is best described as...

• The same type of energy that moves from one object to another

• When the type of energy changes into another form

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One example of energy transfer is...

• Your Xbox converting electrical energy into light and sound energy.

• Electrical energy from a computer changing to sound and light energy.

• Hot coffee in a mug warming the mug and your hands.

• Your lamp changing electrical energy to light and thermal energy.

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