9.5 Source of Energy

Which of the following is not an alternative source of energy?

• solar energy

• biofuels

• nuclear energy

• fossil fuels

When burnt, the fossil fuels releases .............................. energy.

• kinetic

• solar

• heat

• light

Which are examples of fossil fuels? Select all options.

• Petrol

• Natural Gas

• Diesel

• Coal

A hydroelectric power station converts the ................................. of water to electrical energy.

• chemical potential energy

• gravitational potential energy

• elastic potential energy

• kinetic energy

Which of the following are impacts on environment due to hydroelectric energy? Select all options.

• It produces a large amount of greenhouse gases

• It floods the area behind the dam

• It destroys habitats

• It kills plants and animals

This clean source of energy can generate radioactive substances.

• biofuels

• nuclear

• geothermal

• solar

Why is wind energy not being harnessed in Singapore?

• Lack of expertise

• Lack of river

• Lack of strong winds

• Lack of space available

Heat energy stored in the Earth's core is ....................... energy.

• Biofuels

• Solar

• Geothermal

• Nuclear

Which renewable source of energy has Singapore been harnessing to produce electricity?

• Nuclear

• Hydroelectric

• Solar

• Geothermal

Which of the following is an example of biofuels?

• Petrol

• Diesel

• Ethanol

• Crude Oil