Energy and Thermodynamics Test

A 200-kg rock is at the top of a cliff. What happens to its energy as it begins to fall?

• Its kinetic energy is transformed into potential energy.

• Its potential energy is transformed into kinetic energy.

• Its potential energy increases.

• Its kinetic energy decreases.

In a closed system, what happens to the total energy of the system as energy conversions take place?

• It increases.

• It decreases

• It remains constant.

• It is transferred out of the system.

Energy transferred from one place to another by virtue of a temperature difference is __________.

• Kinetic Theory

• Heat

• thermal energy

• temperature

As the temperature of an abject increases, its molecules

• move faster

• get samller (condense)

• move farther apart (expand)

• move faster and farther apart (expand)

The Law of Conservation of Energy states:

• Energy can created or destroyed but not transformed 
• Energy cannot be created or destroyed, it can only transformed
• Energy can't be created, destroyed or transformed

When you strike a match and light some logs on fire, what is the energy transformation that is taking place?

• heat to kinetic to potiential
• kinetic to thermal to light
• chemical to light to thermal
• light to chemical to thermal

What is Nuclear Energy?

• The use of nuclear reactions that release nuclear energy to to generate heat.
• Nuclear energy is obtained at nuclear power plants when they heat water to steam and is created when uranium atoms split this is called Fission.
• A non renewable energy

Solar Energy is... 

• Energy that comes from harnessing the movement of the air
• Energy that comes from the Sun
• A source of renewable energy, such as solar, wind, or geothermal energy
• Fuel from plant material

As water flows through a dam, a generator is turned and creates enough electricity for thousands of homes. This describes...

• biofuels
• hydroelectric energy
• geothermal energy.

A cat stuck in a tree is an example of 

• kinetic energy
• mechanical energy
• chemical energy
• potential energy