Diagram 1 shows two sources of energy X and Y.

Which objects can be classified into X and Y?

• A. X : Kite , Y : Lorry

• B. X : Fan, Y : Bicycle

• C. X : Lorry , Y : Kite

• D. X : Glider, Y : Kite

Diagram 2 shows the classification of energy sources.

Which sources are represented by S and T?

• 
• 
• 
• 

Diagram 3 shows a method to obtain a type of renewable energy.

What will happen if the usage of this energy is increased?

• A. Fossil fuels will run out.

• B. Increase in the use of windmills.

• C. Decrease in the rate of air pollution.

• D. Increase in the consumption of electrical energy at homes.

Diagram 4 shows a catapult is streched.

What is the energy transformation of the stone after the catapult is released?

• A. Potential energy → Kinetic energy

• B Kinetic energy → Potential energy

• C Chemical energy → Heat energy

• D Heat energy → Chemical energy

What is the meaning of energy?

• A. The ability to do work

• B. The stored energy an object due to its position

• C. Form of energy that an object has due to its motion.

• D. Energy that stored in the bonds of chemical compounds.

Every form of energy below can be transformed from one form to another except

• A Kinetic energy

• B Sound energy

• C Heat energy

• D Magnetic energy

Which of the following are the sources of energy?

• A. Sun, Nuclear and cars

• B. Food, Nuclear and Plastic

• C. Water, wind and biomass

• D. Fossil fuels, clothes and sunlight

Diagram 5 shows a device.

The transformation of energy that happens when the tool is lit up is shown below.

Chemical energy → Electrical energy → Energy P → Heat energy

What is energy P?

• A. Light energy

• B. Sound energy

• C. Kinetic energy

• D. Nuclear energy

When a coconut is ripe, it will fall to the ground.

What is the transformation of energy that happens in the phenomenon above?

• A. Potential energy → Kinetic energy → Sound energy

• B. Potential energy → Heat energy → Sound energy

• C. Kinetic energy → Light energy → Heat energy

• D. Kinetic energy → Sound energy → Potential energy

Which of the following is true about renewable energy sources?

• A. It includes petroleum, the Sun and natural gas.

• B. It includes coal, biomass and food

• C. It includes wind, water and the Sun

• D. It includes the Sun, food and nuclear materials