Concepts 1 and 2 Review

Front

What is radiation?

Back

Radiation is the transfer of energy through space without the need for a medium, such as heat from the sun or food cooking in a microwave.

Front

What is an insulator?

Back

An insulator is a material that slows down the transfer of heat, preventing energy from moving easily through it.

Front

What is a conductor?

Back

A conductor is a material that transfers heat energy very well, such as metals like copper.

Front

What does the Law of Conservation of Energy state?

Back

The Law of Conservation of Energy states that energy can be transformed from one form to another, but it cannot be created or destroyed.

Front

If a skateboarder has 50J of energy at the top of a ramp and 20J of potential energy halfway down, how much kinetic energy does he have?

Back

30J of kinetic energy.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state, such as a skateboarder at the top of a ramp.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, calculated as 1/2 mv², where m is mass and v is velocity.

Front

Give an example of a good insulator.

Back

Materials like rubber, glass, and wood are good insulators.

Front

Give an example of a good conductor.

Back

Copper and aluminum are examples of good conductors.

Front

What happens to energy when it is transformed?

Back

When energy is transformed, it changes from one form to another, such as from potential energy to kinetic energy.