Energy Forms, Change and Conservation

The total kinetic and potential energy of all the particles of an object

• nuclear energy
• thermal energy
• chemical energy
• electrical energy

The energy of electric charges is

• electromagnetic energy
• electrical energy
• chemical energy
• thermal energy

What does the Law of Conservation state?

• energy can be created but never destroyed
• energy can neither be created nor destroyed
• energy can be created by using solar energy from the sun but it can't be destroyed

During a camping trip, Ming gathers firewood and arranges it in the fire pit. She sets it on fire, and the result is a roaring blaze. Which statement best shows all the energy transformations that took place?

• chemical to thermal
• thermal to electromagnetic
• chemical to thermal and electromagnetic
• chemical and electromagnetic to thermal

Johanna took her little brother to the playground because he likes to swing. Look at the diagram below that shows Johanna pushing her brother on a swing. Which statement is true about the transformation between kinetic and potential energy while the boy swings?

• Kinetic energy changes to potential energy between points A and B.
• Potential energy changes to kinetic energy between points A and B.
• Potential energy changes to kinetic energy between points B and C
• Potential and kinetic energy remain constant between points A and C
• Option 5

As a candle burns on the table, you can see the electromagnetic energy and feel the thermal energy released. Which statement is true about the energy involved in burning the candle

• Chemical energy is created from electromagnetic energy when the candle burns.
• Thermal and chemical energy are destroyed by the electromagnetic energy when the candle burns.
• The total amount of all types of energy is conserved when the candle burns.
• The total chemical energy equals the electromagnetic minus thermal energy released when the candle burns

Mike is boiling water to cook pasta. The image shows some of the changes that occur when water is heated and boiled. These changes involve both energy transfers and energy transformations. What is the difference between an energy transfer and an energy transformation

• Transfer is movement of energy from one place to another, and transformation is the change of one type of energy to another
• There is no difference. Both involve movement of energy from one place to another
• Transformation is movement of energy from one place to another, and transfer is the change of one type of energy to another.
• There is no difference. Both involve the change of one type of energy to another

The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?

• mechanical to heat
• potential to kinetic
• sound to mechanical
• kinetic to potential

When gasoline is burned in a car engine, ________ energy is converted into _________ energy.

• heat, chemical
• mechanical, chemical
• chemical, potential
• chemical, mechanical

A change from one form of energy to another is known as

• energy conversion
• solar energy
• chemical energy
• energy transport