Class 5 Science Energy – Notes Question Answers
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Multiple choice questions (15*1=15)
1.) What is energy?
a.) Something that makes us tired
b.) The ability to do work
c.) A type of food
d.) A form of gas
Answer: b. The ability to do work
2.) Which of the following is a renewable source of energy?
a.) Coal
b.) Solar power
c.) Natural gas
d.) Petroleum
Answer: b. Solar power
3.) What type of energy does a moving bicycle possess?
a.) Electrical energy
b.) Chemical energy
c.) Kinetic energy
d.) Sound energy
Answer: c. Kinetic energy
4.) Which energy source is obtained from the burning of fossil fuels?
a.) Solar energy
b.) Wind energy
c.) Thermal energy
d.) Chemical energy
Answer: d. Chemical energy
5.) Which energy transformation occurs when you turn on a flashlight?
a.) Electrical to mechanical
b.) Electrical to thermal
c.) Mechanical to electrical
d.) Thermal to electrical
Answer: b.Electrical to thermal
6.) Which of the following is an example of kinetic energy?
a.) A stretched rubber band
b.) Water stored in a dam
c.) A rolling ball
d.) A battery
Answer: c. a. rolling ball
7.) The Main source of energy for all living things on Earth is?
a.) Wind
b.) Fossil fuels
c.) Sun
d.) Water
Answer: c. Sun
8.) Which energy source produces electricity by harnessing the flow of water?
a.) Geothermal energy
b.) Nuclear energy
c.) Hydroelectric energy
d.) Biomass energy
Answer: c. Hydroelectric energy
9.) What is the main environmental concern associated with burning fossil fuels for energy?
a.) Air pollution
b.) Water scarcity
c.) Soil erosion
d.) Deforestation
Answer: a. Air pollution
10.) What is the unit of measurement for energy?
a.) Watts
b.) Volts
c.) Amps
d.) Joules and calories
Answer: d. Joules and calories
11.) What type of energy does a battery store?
a.) Kinetic energy
b.) Chemical energy
c.) Thermal energy
d.) Sound energy
Answer: b. Chemical energy
12.) Which of these devices converts electrical energy into light energy?
a.) Microwave oven
b.) Refrigerator
c.) Incandescent bulb
d.) Blender
Answer: c. Incandescent bulb
13.) What type of energy is produced when you strike a matchstick?
a.) Chemical energy
b.) Nuclear energy
c.) Mechanical energy
d.) Magnetic energy
Answer: a. Chemical energy
14.) What happens to energy when it’s transferred from one object to another?
a.) It disappears
b.) It changes form
c.) It doubles in amount
d.) It remains the same
Answer: b. It changes form
15.) What type of energy does a stretched rubber band have?
a.) Thermal energy
b.) Chemical energy
c.) Kinetic energy
d.) Elastic potential energy
Answer: d. Elastic potential energy
True/False solution (10*1=10)
1.) The sun provides light energy to the Earth.
Answer: True
2.) Wind is a non renewable source of energy.
Answer: False
3.) Running is an example of kinetic energy.
Answer: True.
4.) Food provides our bodies with thermal energy.
Answer: True
5.) Fossil fuels are a clean source of energy.
Answer: False.
6.) Energy is always conserved, meaning it cannot be destroyed.
Answer: True.
7.) A flashlight uses thermal energy to produce light.
Answer: False.
8.) Sound is a form of mechanical energy.
Answer: True.
9.) Hydroelectric power plants generate electricity from air pressure.
Answer: False.
10.) The total amount of energy the world is constant.
Answer: True.
Short answer questions (5*1=5)
1.) What is chemical energy?
Answer: chemical energy is the energy stored in the bonds of molecules and atoms and gets released while chemical reaction.
2.) Name the different forms of energy.
Answer: The different forms of energy are kinetic energy, chemical energy, potential energy, nuclear energy and electrical energy.
3.) How do we get energy from food?
Answer: Our body converts the energy in food into a glucose that gets absorbed through digestion.
4.) What kind of energy does a bouncing ball have?
Answer: A bouncing ball has kinetic energy while it’s in motion.
5.) What is the energy source of our muscles work when we run or walk?
Answer: Our muscles use chemical energy stored in our bodies to work when we run or jump.
Descriptive answer question (5*2=10)
1.) Explain kinetic energy.
Answer: Kinetic energy the form of energy that is generated when an object is in movement. it depends on the mass and velocity of that object. Some examples of kinetic energy are, throwing a ball, flying airplane, cycling etc.
2.) What is energy chain?
Answer: Energy chain is the process of producing energy from its source. It is the flow of energy transformation from one form to another. Sun is the ultimate source of energy in earth and then it gets absorbed by plants and humans in various forms.
3.) Why transformation of energy is important?
Answer: The importance of energy transformation is very crucial for the existence of living beings. Every process like eating, riding cars, using electric devices, everything is possible due to transformation of energy.
4.) Match the following chart.
Column A | Column B |
i. Potential energy | a) Battery |
ii. Kinetic energy | b) A stretched rubber band |
iii. Chemical energy | c) Unnecessary fuel consumption |
iv. Wasting energy | d) Running |
5.) How can we save energy?
Answer: We can save energy by these following methods:
i.) Turning off the electric appliances when not in use
ii.) Reducing waste and using resources wisely
iii.) Using less non renewable sources as much possible
iv.) Using energy efficient bulbs and star labeled electric machines
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