Physics Flashcard

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, typically calculated as PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

How can we increase gravitational potential energy?

Back

By increasing the mass of the object or increasing its height in the gravitational field.

Front

What happens to kinetic energy as a skateboarder accelerates down a hill?

Back

The kinetic energy increases as the skateboarder accelerates.

Front

What is the law of conservation of mass?

Back

The law states that mass cannot be created or destroyed in a closed system; the total mass remains constant.

Front

What is the mass of water after 15g of water vapor condenses?

Back

The mass remains 15 grams after condensation.

Front

What is conduction?

Back

Conduction is the transfer of heat through a material without the movement of the material itself, typically occurring in solids.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases), where warmer areas rise and cooler areas sink.

Front

What is the difference between conduction and convection?

Back

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

Front

What energy transformations occur in an electric alarm clock?

Back

The energy transformations are from electrical energy to mechanical energy to sound energy.

Front

What is kinetic energy?

Back

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