Energy Transformations Review

What type of energy is converted when gasoline burns in an engine?

• Kinetic energy

• Thermal energy

• Chemical potential energy

• Electrical energy

What is mechanical energy?

• The energy associated with the motion of an object.

• The energy stored in a compressed spring.

• The sum of kinetic and potential energy in a system.

• The energy required to lift an object against gravity.

Which device transforms electrical energy into sound?

• A radio.

• A light bulb.

• A toaster.

• A refrigerator.

What is thermal energy?

• The total kinetic energy of particles in a substance, often perceived as heat.

• The energy stored in the bonds of chemical compounds.

• The energy associated with the motion of an object.

• The energy required to change the temperature of a substance.

What is the principle of energy conservation?

• Energy can be created and destroyed.

• Energy can be transformed from one form to another but not created or destroyed.

• Energy cannot be created or destroyed, only transformed from one form to another.

• Energy is always lost in transformations.

What is the sum of kinetic energy and potential energy within a system called?

• Mechanical energy

• Thermal energy

• Chemical energy

• Nuclear energy

What is an example of gravitational potential energy?

• A rock held at the top of a hill has gravitational potential energy due to its height.

• A car moving at high speed has kinetic energy.

• A compressed spring has potential energy due to its compression.

• A light bulb converts electrical energy into light energy.

What type of energy transformation occurs in a light bulb?

• Chemical energy transforms to light energy and thermal energy.

• Electrical energy transforms to light energy and thermal energy.

• Nuclear energy transforms to light energy and thermal energy.

• Mechanical energy transforms to light energy and thermal energy.

What is an example of energy transformation in a battery-powered toy?

• Chemical energy in the battery transforms to mechanical energy to move the toy.

• Mechanical energy is converted to thermal energy to heat the toy.

• Electrical energy is transformed into sound energy to make noise.

• Kinetic energy is stored as potential energy in the toy.

What is electrical energy?

• Energy caused by the movement of electrons.

• Energy stored in chemical bonds.

• Energy produced by nuclear reactions.

• Energy derived from solar radiation.