GCSE Physics - Conservation of Energy #4

The video tutorial explains the conservation of energy principle, emphasizing that energy can be transferred, stored, or dissipated but not created or destroyed. It uses the example of a phone charging to illustrate energy transfer between electrical and chemical forms. The concept of open and closed systems is introduced, highlighting how energy and matter interact within these systems. The tutorial stresses the importance of understanding these concepts to apply them in various scenarios.

What does the conservation of energy principle state about the creation and destruction of energy?

• Energy can be created but not destroyed.

• Energy can be destroyed but not created.

• Energy can neither be created nor destroyed.

• Energy can be both created and destroyed.

When charging a phone, what type of energy is stored in the battery?

• Sound energy

• Light energy

• Thermal energy

• Chemical energy

What is a common form of wasted energy when using electronic devices?

• Heat energy

• Chemical energy

• Light energy

• Nuclear energy

In an open system, how does energy interact with the environment?

• Energy is only released to the environment.

• Energy can freely move between the system and the environment.

• Energy is completely isolated from the environment.

• Energy is only absorbed from the environment.

What happens to the energy in a closed system?

• It increases over time.

• It decreases over time.

• It remains constant.

• It fluctuates randomly.