Energy and Waves Flashcard

Front

What is the law of conservation of energy?

Back

Energy can be transformed into a different form but is never created nor destroyed, so the total amount of energy in a closed system remains constant.

Front

What is elastic potential energy?

Back

The energy stored in an object when it is stretched or compressed, such as in a rubber band.

Front

How does the kinetic energy of an object change as its speed increases?

Back

Kinetic energy increases with the square of the speed; as speed doubles, kinetic energy increases by a factor of four.

Front

What is kinetic energy?

Back

The energy of an object due to its motion.

Front

What is the difference between transverse and longitudinal waves?

Back

In transverse waves, the direction of vibration is perpendicular to the direction of wave motion, while in longitudinal waves, the direction of vibration is parallel to the direction of wave motion.

Front

What is an example of energy transformation?

Back

A falling rock converts potential energy into kinetic energy as it descends.

Front

What is the formula for kinetic energy?

Back

Kinetic energy (KE) = 1/2 mv², where m is mass and v is velocity.

Front

What does it mean for energy to be conserved in a system?

Back

It means that any loss of energy in one part of the system must correspond to a gain of energy in another part of the same system.

Front

What is potential energy?

Back

The stored energy in an object due to its position or state.

Front

What is the relationship between energy and work?

Back

Work is done when energy is transferred from one system to another, and it is calculated as the force applied over a distance.