Online Test — Sources of Energy
25 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 25
Energy is defined as the ability to do:
Heat
Work
Light
Sound
Explanation: Energy is the ability or capacity to do work.
Question 2 of 25
The energy possessed by a moving object is:
Potential energy
Kinetic energy
Chemical energy
Nuclear energy
Explanation: Kinetic energy is the energy of a moving object.
Question 3 of 25
Stored energy due to position or condition is:
Kinetic energy
Potential energy
Sound energy
Light energy
Explanation: Potential energy is stored energy due to position or condition.
Question 4 of 25
In an electric bulb, electrical energy is mainly changed into:
Sound energy
Light energy
Chemical energy
Nuclear energy
Explanation: A bulb converts electrical energy into light (and heat) energy.
Question 5 of 25
The Law of Conservation of Energy states that energy can be:
Created
Destroyed
Only transformed
Multiplied
Explanation: Energy can neither be created nor destroyed, only transformed from one form to another.
Question 6 of 25
Which of these is a fossil fuel?
Sunlight
Coal
Wind
Water
Explanation: Coal is a fossil fuel (along with petroleum and natural gas).
Question 7 of 25
Fossil fuels were formed from the remains of ancient:
Rocks
Plants and animals
Metals
Gases only
Explanation: Fossil fuels formed over millions of years from buried plants and animals.
Question 8 of 25
In a thermal power plant, steam is used to spin a:
Bulb
Turbine
Battery
Magnet only
Explanation: Steam spins a turbine, which drives a generator to produce electricity.
Question 9 of 25
Fossil fuels are described as ______ because they will eventually run out.
Renewable
Non-renewable
Unlimited
Endless
Explanation: Fossil fuels are non-renewable; they exist in limited amounts and will run out.
Question 10 of 25
Hydropower generates electricity using the energy of:
Falling water
Burning coal
Sunlight
Wind only
Explanation: Hydropower uses the energy of falling or flowing water to spin turbines.
Question 11 of 25
A source of energy that is naturally replenished and will not run out is called:
Non-renewable
Renewable
Fossil fuel
Limited
Explanation: A renewable source is naturally replenished and will not run out.
Question 12 of 25
Which of these is a renewable source of energy?
Coal
Petroleum
Solar energy
Natural gas
Explanation: Solar energy is a renewable, non-conventional source.
Question 13 of 25
Windmills (wind turbines) generate electricity using the energy of:
Sunlight
Moving air (wind)
Coal
Tides
Explanation: Wind turbines use the kinetic energy of the wind.
Question 14 of 25
Heat energy obtained from inside the Earth is called:
Solar energy
Tidal energy
Geothermal energy
Wind energy
Explanation: Geothermal energy comes from the heat inside the Earth.
Question 15 of 25
A main advantage of renewable sources is that they are:
Limited and polluting
Renewable and clean
Quick to run out
Only found underground
Explanation: Renewable sources will not run out and cause little pollution.
Question 16 of 25
Solar energy comes from the:
Wind
Sun
Sea
Coal
Explanation: Solar energy is the energy that comes from the Sun.
Question 17 of 25
A solar cell (panel) converts sunlight directly into:
Sound
Electricity
Coal
Wind
Explanation: Solar cells convert sunlight directly into electricity.
Question 18 of 25
The mixture of dung and water fed into a biogas plant is called:
Biogas
Slurry
Manure
Petrol
Explanation: Slurry is the dung-and-water mixture fed into a biogas plant.
Question 19 of 25
Biogas is mainly made up of the gas:
Oxygen
Methane
Nitrogen
Carbon dioxide only
Explanation: Biogas is mainly methane, a clean-burning fuel.
Question 20 of 25
An advantage of biogas over firewood is that biogas:
Produces a lot of smoke
Burns cleanly without smoke
Cannot be used for cooking
Cuts down trees
Explanation: Biogas burns cleanly without smoke, unlike firewood.
Question 21 of 25
Nuclear energy is the energy stored in the ______ of atoms.
Electrons
Nucleus
Surface
Shell
Explanation: Nuclear energy is stored in the nucleus (centre) of atoms.
Question 22 of 25
The splitting of a large nucleus into smaller ones is called:
Fusion
Fission
Reflection
Conduction
Explanation: Nuclear fission is the splitting of a large nucleus into smaller nuclei.
Question 23 of 25
The reaction that powers the Sun is nuclear:
Fission
Fusion
Reflection
Electrolysis
Explanation: The Sun is powered by nuclear fusion (joining of small nuclei).
Question 24 of 25
A serious drawback of nuclear energy is the production of:
Clean water
Radioactive waste
Sunlight
Wind
Explanation: Nuclear energy produces dangerous radioactive waste.
Question 25 of 25
The growing shortage of energy as fossil fuels are used up is called the:
Water cycle
Energy crisis
Food chain
Carbon cycle
Explanation: The energy crisis is the growing shortage of energy as fossil fuels deplete.