Energy

The picture shows what type of transformation

• Electrical to mechanical

• light to electric

• electrical to light

• light to light

What is energy transformation?

• a change of energy from one form to another
• when energy gets more energy added to it
• when energy gets destroyed
• a change in intensity

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According to the Law of Conservation of Energy...

• energy changes form
• energy can be created and destroyed
• energy flows from one material to the next
• energy cannot be created or destroyed

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As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy? 

• Both the potential energy and kinetic energy decrease
• The potential energy decreases while the kinetic energy increases 
• The kinetic energy decreases while the potential energy increases 
• Bothe the potential energy and kinetic energy increase 

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A student is holding the end of a pendulum. The student releases the pendulum. What energy transfers are taking place?

• potential energy is transferred to kinetic energy

• chemical energy to thermal energy

• mechanical energy to chemical energy

• kinetic energy is tranferred to potential energy

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Energy can be _____________ or changed from one type to another.

• destroyed
• transferred
• created
• ignored

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Which of the following is an exmaple of a change of kinetic energy into gravitational potential energy?

• a person parachuting out of a plane
• a car racing around an oval track
• a person skiing down a hill
• a person walking up a hill

When you eat fruits and vegetables, chemical bonds are releasing stored energy, this is...

• a. thermal energy

• b. sound energy

• c. electrical energy

• d. chemical energy

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Which of the following is a conversion from light energy to chemical energy?

• a. turning on a stove to heat dinner
• b. turning on a lamp
• c. growing an apple tree
• d. making toast in a toaster

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After an energy conversion, you end up with the same total amount of energy as the original amount of potential energy. Which of the following laws explains this rule?

• a. law of energy changes
• b. law of conservation of energy
• c. law of power and energy
• d. law of potential energy

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