PHYSICS - Energy - Conservation of Energy

The video tutorial explores the concept of energy, its storage, and transfer methods. It explains how energy is stored chemically, such as in petrol, and how it requires oxygen to release energy. The tutorial covers various energy transfer methods, including mechanical, electrical, heating, and radiation. Practical examples, like cooking with a gas stove and using a battery-powered drill, illustrate these concepts. The video emphasizes energy conservation, using Sankey diagrams to show energy flow and waste. It concludes with a reminder to conserve energy sources to prevent depletion.

Where is energy stored in a car when it is not moving?

• In the car's battery

• In the chemical bonds of petrol and oxygen

• In the car's engine

• In the tires

Which of the following is NOT an example of an energy carrier?

• Radiation

• Chemical

• Electrical

• Mechanical

What happens to some of the energy when using a camping gas stove?

• It is converted into light

• It is stored for later use

• It is wasted as heat

• It is completely used up

How is energy transferred in a battery-powered drill?

• Mechanically to the motor

• Electrically to the motor

• By heating the drill

• By radiation from the drill

What does a Sankey diagram illustrate about energy?

• Energy is created and destroyed

• Energy is only transferred mechanically

• Energy is conserved and not used up

• Energy is always increasing