Understanding the Law of Conservation of Energy

What does the law of conservation of energy state?

• Energy can be created from nothing.

• Energy is always lost in transformations.

• Energy can only be transformed from one form to another.

• Energy can be created and destroyed.

When you stop pumping a swing, what happens to its energy?

• It disappears completely.

• It turns into electrical energy.

• It transforms into sound and heat energy.

• It remains as potential energy.

How does a lamp demonstrate the conservation of energy?

• It uses energy without any transformation.

• It stores energy for later use.

• It transforms electrical energy into light and heat.

• It creates energy from light.

What type of energy does a roller coaster have at the top of a track?

• Thermal energy

• Sound energy

• Kinetic energy

• Potential energy

How does your body use the energy from food?

• It uses it to create new energy.

• It transforms it into mechanical and heat energy.

• It stores it as electrical energy.

• It converts it into sound energy.