_S8P2 Energy Unit Summative Test

Front

What is conduction?

Back

Conduction is the transfer of heat energy through direct contact between materials. It occurs when faster-moving particles collide with slower-moving particles, transferring energy.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion. It depends on the mass of the object and the square of its velocity.

Front

What is radiation?

Back

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

Front

What is the primary energy transformation in a wind turbine?

Back

In a wind turbine, the primary energy transformation is from kinetic energy (of the wind) to electrical energy.

Front

How does kinetic energy change when speed doubles?

Back

When an object's speed doubles, its kinetic energy increases four times.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer, less dense areas of a fluid rise and cooler, denser areas sink.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state. For example, a rock at the top of a hill has gravitational potential energy.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of particles in a substance. It is related to temperature and the state of matter.

Front

What is the formula for kinetic energy?

Back

The formula for kinetic energy (KE) is KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the difference between conduction and convection?

Back

Conduction is heat transfer through direct contact, while convection is heat transfer through the movement of fluids.