Conservation of Energy

Front

What is the principle of conservation of energy?

Back

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

Front

What is kinetic energy (KE)?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is gravitational potential energy (GPE)?

Back

Gravitational potential energy is the energy an object possesses due to its height above the ground, calculated as GPE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

How does mass affect kinetic energy?

Back

As mass increases, kinetic energy increases, assuming velocity remains constant.

Front

What two factors does gravitational potential energy depend on?

Back

Gravitational potential energy depends on height and mass of the object.

Front

What is specific heat?

Back

Specific heat is the amount of energy required to raise the temperature of 1 kg of a substance by 1ºC.

Front

Which material has a higher specific heat: water or wood?

Back

Water has a higher specific heat (4184 J/KgºC) compared to wood (1760 J/KgºC), meaning it requires more energy to raise its temperature.

Front

What are the units for work?

Back

The units for work are joules.

Front

What is power in the context of work?

Back

Power is the rate at which work is done, calculated as Power = Work / Time.

Front

What do you need to calculate power when moving an object?

Back

To calculate power, you need to know how long the task took.