CIA 3 review 8th grade

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration. It is the energy that has the potential to be converted into kinetic energy.

Front

What are conductors?

Back

Conductors are materials that allow electricity to flow through them easily. Examples include metals like copper and aluminum.

Front

What is radiation in the context of heat transfer?

Back

Radiation is the transfer of heat energy through electromagnetic waves. It does not require a medium, so it can occur in a vacuum.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion. It depends on the mass of the object and its velocity.

Front

How does a pendulum demonstrate energy transformation?

Back

A pendulum demonstrates energy transformation as it swings; potential energy is highest at the top of the swing and transforms into kinetic energy at the lowest point.

Front

What is the difference between conduction, convection, and radiation?

Back

Conduction is heat transfer through direct contact, convection is heat transfer through fluid movement, and radiation is heat transfer through electromagnetic waves.

Front

What happens to kinetic energy as an object falls?

Back

As an object falls, its kinetic energy increases while its potential energy decreases, assuming no energy is lost to air resistance.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is an insulator?

Back

An insulator is a material that does not allow electricity to flow through it easily. Examples include rubber, glass, and plastic.

Front

What is the role of gravity in potential energy?

Back

Gravity is a force that affects potential energy; the higher an object is above the ground, the more potential energy it has due to gravitational pull.