Energy—How Things Work
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Energy All Around Us
SubtopicEnergy All Around Us under Energy—How Things Work for Grade 5 CBSE.
Preview questions (no answers)
- 1.
An electric mixer converts electrical energy into ______ energy.
A.Mechanical
B.Solar
C.Chemical
D.Light
- 2.
Which energy is used by a sailboat to move in the water?
A.Electrical energy
B.Wind energy
C.Solar energy
D.Sound energy
- 3.
Which of these objects has potential energy?
A.A ball rolling on the ground
B.A book lying on a high shelf
C.A flying bird
D.A running athlete
- 4.
Hydro energy is energy we get from ______.
A.Fire
B.Water
C.Air
D.Earth
- 5.
Which of the following is true about energy?
A.It has weight and occupies space
B.It is the ability to do work
C.It can only be seen, never felt
D.It is a form of matter
- 6.
Which of these is a liquid fossil fuel used to run vehicles?
A.Coal
B.Petroleum
C.Natural Gas
D.Biogas
- 7.
A sailboat uses which type of energy to move across the water?
A.Solar energy
B.Wind energy
C.Chemical energy
D.Atomic energy
- 8.
An explosion of a firecracker involves which forms of energy?
A.Chemical energy only
B.Sound, Light, and Heat energy
C.Only Sound energy
D.Electrical and Magnetic energy
- 9.
Fuel efficiency in cars is important because it:
A.Allows the car to go slower.
B.Reduces the amount of chemical energy wasted as heat.
C.Increases the amount of sound the car makes.
D.Makes the car heavier.
- 10.
How is energy transferred from the Sun to the Earth?
A.Conduction through the air
B.Convection through space
C.Radiation through the vacuum of space
D.Electrical wires in the atmosphere
Download the worksheet for Energy—How Things Work - Energy All Around Us to practice offline. It includes additional chapter-level practice questions.
Sources of Energy: Fuel and Electricity
SubtopicSources of Energy: Fuel and Electricity under Energy—How Things Work for Grade 5 CBSE.
Preview questions (no answers)
- 1.
Which of these is the best way to save energy at home?
A.Using a heater with windows open
B.Using energy-efficient LED bulbs
C.Keeping the TV on standby all night
D.Cooking in open vessels
- 2.
What is the purpose of the plastic coating on electric wires?
A.To make them look colorful
B.To prevent electric shocks
C.To make them stronger
D.To help electricity flow faster
- 3.
Which of the following is a renewable source of energy?
A.Petrol
B.Coal
C.Wind
D.Diesel
- 4.
Fossil fuels take _________ of years to form.
A.Hundreds
B.Millions
C.Tens
D.A few
- 5.
Study the diagram of the electrical circuit. Component 'X' is a safety device made of a special material that melts and breaks the circuit if the flow of electricity becomes dangerously high. Identify component 'X'.
A.Switch
B.Electric Cell
C.Fuse
D.Insulator
- 6.
Which of the following is considered the most non-polluting source of energy for generating electricity?
A.Coal-based power plants
B.Diesel generators
C.Wind turbines
D.Burning wood
- 7.
What is the main function of an electric generator?
A.To create energy from nothing
B.To convert mechanical energy into electrical energy
C.To store electricity for a long time
D.To convert light into electricity
- 8.
Which of the following represents the correct sequence of energy changes in a flashlight?
A.Electrical Chemical Light
B.Chemical Electrical Light + Heat
C.Light Electrical Chemical
D.Mechanical Chemical Light
- 9.
Why is it recommended to use LED bulbs instead of traditional filament bulbs?
A.LEDs consume more electricity, helping the power plant.
B.LEDs convert most of the electrical energy into light and very little into heat.
C.LEDs are cheaper to buy initially.
D.LEDs work without any wires.
- 10.
An open circuit is one in which:
A.Electricity flows freely without any obstruction.
B.The path is broken, and no electricity flows.
C.The battery is new and fully charged.
D.There are too many bulbs connected.
Download the worksheet for Energy—How Things Work - Sources of Energy: Fuel and Electricity to practice offline. It includes additional chapter-level practice questions.
Renewable and Non-renewable Energy
SubtopicRenewable and Non-renewable Energy under Energy—How Things Work for Grade 5 CBSE.
Preview questions (no answers)
- 1.
The energy possessed by an object due to its position or motion is called ________ energy.
A.Electrical
B.Mechanical
C.Nuclear
D.Chemical
- 2.
Which gas is the main component of Natural Gas?
A.Oxygen
B.Methane
C.Nitrogen
D.Carbon dioxide
- 3.
Non-renewable energy sources are also known as ________ energy sources.
A.Exhaustible
B.Inexhaustible
C.Perpetual
D.Endless
- 4.
In a torch, chemical energy of cells is first converted to ________ and then to light.
A.Sound energy
B.Electrical energy
C.Heat energy
D.Mechanical energy
- 5.
Which device uses the heat of the Sun to dry clothes?
A.Solar cooker
B.Solar cell
C.None, it is a natural process of evaporation
D.Solar furnace
- 6.
Which of the following sources of energy is likely to run out in the next 100 years if used at the current rate?
A.Solar energy
B.Wind energy
C.Petroleum
D.Tidal energy
- 7.
What type of energy is possessed by a boulder sitting at the top of a hill?
A.Kinetic energy
B.Potential energy
C.Electrical energy
D.Heat energy
- 8.
In a renewable energy system, when there is more sunlight than needed, the extra electricity is stored in large batteries for later use. Look at the diagram showing this process. When electricity flows from the Solar Panel (B) into the Battery (C) during the 'charging' phase, what specific energy transformation is occurring inside the battery?
A.Chemical energy is being converted into Electrical energy
B.Electrical energy is being converted into Chemical energy
C.Light energy is being converted into Electrical energy
D.Kinetic energy is being converted into Mechanical energy
- 9.
Which energy source is most likely to be affected by a long period of drought (no rain)?
A.Solar energy
B.Wind energy
C.Hydroelectric energy
D.Geothermal energy
- 10.
In most power plants, what is used to spin the turbine to generate electricity?
A.Cold water
B.High-pressure steam
C.Magnets
D.Gravity
Download the worksheet for Energy—How Things Work - Renewable and Non-renewable Energy to practice offline. It includes additional chapter-level practice questions.
Energy Conservation in Daily Life
SubtopicEnergy Conservation in Daily Life under Energy—How Things Work for Grade 5 CBSE.
Preview questions (no answers)
- 1.
By using energy-efficient appliances, we can lower our:
A.Height
B.Electricity bills
C.Age
D.Weight
- 2.
What is the best time to water plants to save water energy and evaporation losses?
A.Noon
B.Early morning or evening
C.Midnight
D.Any time
- 3.
Which energy do we get by eating food?
A.Electrical energy
B.Chemical energy
C.Solar energy
D.Light energy
- 4.
Turning off the main switch when going on a long vacation is:
A.A waste of time
B.A good energy-saving practice
C.Dangerous for the house
D.Only for factories
- 5.
Using a clothesline to dry clothes instead of an electric dryer is an example of using which energy source?
A.Electrical Energy
B.Solar and Wind Energy
C.Geothermal Energy
D.Nuclear Energy
- 6.
In a door bell, electrical energy is converted into:
A.Light energy
B.Heat energy
C.Sound energy
D.Chemical energy
- 7.
Which form of energy is produced when we speak?
A.Light energy
B.Chemical energy
C.Sound energy
D.Magnetic energy
- 8.
Which of these is a 'Non-Renewable' energy source that we are trying to conserve for future generations?
A.Tidal Energy
B.Natural Gas
C.Biomass
D.Solar Energy
- 9.
What is 'Energy Auditing'?
A.A way to count how many batteries you have.
B.A process of inspecting and analyzing energy flows in a building to reduce energy input.
C.A test to see how fast you can run.
D.A method to create energy from waste.
- 10.
What is the primary energy source for 'Ocean Thermal Energy Conversion' (OTEC)?
A.The movement of the waves.
B.The temperature difference between the warm surface water and cold deep water.
C.The salt content of the water.
D.The underwater volcanoes.
Download the worksheet for Energy—How Things Work - Energy Conservation in Daily Life to practice offline. It includes additional chapter-level practice questions.