SOURCES OF ENERGY

What form of energy is required by green plants to make food?
1. Chemical energy
2. Heat energy
3. Potential energy
4. Light energy
A motor pump is used to pump the water from the bottom tank to the top tank. The pump consist of a motor which is operated by a battery. the energy changes are
Which of the following is not a source of energy?
1. Wind
2. Natural gas
3. Waves
4. Soil
Which of the following situations does not possess potential energy?
1. A moving car
2. A compressed spring
3. A wound-up toy car
4. A stretched rubber band
Which of the following energy converters does not change electrical energy to heat energy?
1. Electric iron
2. Electric rice cooker
3. Hairdryer
4. Electric fan
Which of the following substances has the maximum kinetic energy at room temperature?
1. Lead
2. Carbon dioxide
3. Mercury
4. Water
Which of the fllowing is a renewable energy source?
1. Radioactive substances
2. Biomass fuels
3. Coal
4. Petroleum
1. This type of energy is known as geothermal energy
2. It is used to turn turbines to generate electrical energy
3. It is a non-renewable source of energy
4. The use of this energy does not cause environmental pollution
The diagram shows a simple pendulum. In which position does the pendulum have the maximum kinetic energy?
1. P
2. Q
3. R
4. S