Topic 3 - Conservation Of Energy - Conservation Of Energy

Question 1

What does conservation of energy mean in physics?

Answer 1

The total energy of an isolated system remains constant

This principle indicates that energy cannot be created or destroyed, only transformed.

Question 2

What is a closed system?

Answer 2

A system with no external forces acting on it

Examples include systems without changes in gravitational force, electrostatic attraction, or external magnetic forces.

Question 3

In a closed system, what happens to the total energy?

Answer 3

The total energy never changes, regardless of energy transfers

This means that energy can be transformed from one form to another but the overall amount remains constant.

Question 4

True or False: In a closed system, energy can be lost.

Answer 4

False

Energy is conserved in a closed system.

Question 5

What happens when a system becomes open?

Answer 5

Energy can be transferred out of the system, changing the total energy

An open system allows for interactions with the environment, leading to energy loss or gain.