Sunday, November 24, 2024

MCQs Science Olympiad for Class 4, Chapter - Work, Force and Energy

 

Work and Force

  1. What is work?
    a) Doing nothing
    b) Moving an object by applying force
    c) Studying a book
    d) Thinking about something
    Answer: b) Moving an object by applying force

  2. Which of the following is an example of force?
    a) Pushing a door to open it
    b) Sitting on a chair
    c) Watching TV
    d) Sleeping
    Answer: a) Pushing a door to open it

  3. When is work said to be done?
    a) When force is applied, and the object moves
    b) When the object remains stationary
    c) When someone is standing still
    d) When force is applied without movement
    Answer: a) When force is applied, and the object moves

  4. Which force pulls objects towards the Earth?
    a) Magnetic force
    b) Gravity
    c) Friction
    d) Air pressure
    Answer: b) Gravity

  5. What type of force is used when you squeeze a sponge?
    a) Frictional force
    b) Gravitational force
    c) Muscular force
    d) Magnetic force
    Answer: c) Muscular force

  6. What is friction?
    a) A force that attracts objects towards the Earth
    b) A force that resists motion between two surfaces
    c) A force that moves objects upwards
    d) A force that creates light
    Answer: b) A force that resists motion between two surfaces

  7. Which force allows a magnet to attract iron?
    a) Gravitational force
    b) Frictional force
    c) Magnetic force
    d) Muscular force
    Answer: c) Magnetic force

  8. What happens when you push a toy car?
    a) It starts moving
    b) It becomes heavier
    c) It breaks
    d) It changes shape
    Answer: a) It starts moving

  9. What force slows down a bicycle when brakes are applied?
    a) Gravity
    b) Friction
    c) Air pressure
    d) Muscular force
    Answer: b) Friction

  10. What force keeps the Moon in orbit around the Earth?
    a) Friction
    b) Magnetic force
    c) Gravitational force
    d) Muscular force
    Answer: c) Gravitational force

Energy

  1. What is energy?
    a) The ability to do work
    b) The mass of an object
    c) A type of food
    d) A form of rest
    Answer: a) The ability to do work

  2. Which form of energy does the Sun provide?
    a) Electrical energy
    b) Light and heat energy
    c) Mechanical energy
    d) Sound energy
    Answer: b) Light and heat energy

  3. What type of energy is stored in food?
    a) Chemical energy
    b) Light energy
    c) Sound energy
    d) Heat energy
    Answer: a) Chemical energy

  4. Which energy is used to run a car?
    a) Heat energy
    b) Sound energy
    c) Chemical energy
    d) Gravitational energy
    Answer: c) Chemical energy

  5. What is the main source of energy for all living things?
    a) Water
    b) Food
    c) Sun
    d) Air
    Answer: c) Sun

  6. Which energy is possessed by a moving object?
    a) Potential energy
    b) Kinetic energy
    c) Heat energy
    d) Light energy
    Answer: b) Kinetic energy

  7. What kind of energy is stored in a stretched rubber band?
    a) Kinetic energy
    b) Heat energy
    c) Potential energy
    d) Light energy
    Answer: c) Potential energy

  8. Which of the following is a renewable source of energy?
    a) Coal
    b) Sunlight
    c) Petroleum
    d) Natural gas
    Answer: b) Sunlight

  9. What energy is produced when we rub our hands together?
    a) Light energy
    b) Heat energy
    c) Chemical energy
    d) Sound energy
    Answer: b) Heat energy

  10. What type of energy is used to light a bulb?
    a) Heat energy
    b) Light energy
    c) Electrical energy
    d) Sound energy
    Answer: c) Electrical energy

Mixed Questions on Work, Force, and Energy

  1. A windmill uses which type of energy?
    a) Mechanical energy
    b) Wind energy
    c) Light energy
    d) Chemical energy
    Answer: b) Wind energy

  2. Which of the following does not require energy?
    a) Running
    b) Sleeping
    c) Eating food
    d) Standing still
    Answer: d) Standing still

  3. The energy in a flowing river is an example of:
    a) Potential energy
    b) Kinetic energy
    c) Heat energy
    d) Chemical energy
    Answer: b) Kinetic energy

  4. What happens when a ball is thrown upwards?
    a) It gains kinetic energy and loses potential energy
    b) It loses kinetic energy and gains potential energy
    c) Both energies increase
    d) Both energies decrease
    Answer: b) It loses kinetic energy and gains potential energy

  5. Why do we use lubricants like oil?
    a) To reduce friction
    b) To increase gravity
    c) To create more force
    d) To stop motion
    Answer: a) To reduce friction

  6. Which of the following is not a force?
    a) Gravity
    b) Friction
    c) Magnetism
    d) Energy
    Answer: d) Energy

  7. How does gravity affect objects?
    a) It pushes them away
    b) It pulls them towards the Earth
    c) It increases their speed
    d) It changes their color
    Answer: b) It pulls them towards the Earth

  8. What happens to energy when a car stops?
    a) It disappears
    b) It changes form
    c) It is created
    d) It remains the same
    Answer: b) It changes form

  9. What happens when a torch is switched on?
    a) Electrical energy changes to light energy
    b) Kinetic energy changes to potential energy
    c) Heat energy changes to sound energy
    d) Magnetic energy changes to kinetic energy
    Answer: a) Electrical energy changes to light energy

  10. What is the unit of work in the metric system?
    a) Meter
    b) Newton
    c) Joule
    d) Kilogram
    Answer: c) Joule

Additional MCQs

Force

  1. What happens if no force is applied to a stationary object?
    a) It moves
    b) It stays still
    c) It gets heavier
    d) It changes direction
    Answer: b) It stays still

  2. Which force is responsible for making vehicles slow down on the road?
    a) Magnetic force
    b) Frictional force
    c) Gravitational force
    d) Muscular force
    Answer: b) Frictional force

  3. Which of the following is an example of contact force?
    a) Gravity pulling an apple
    b) A person kicking a ball
    c) A magnet attracting iron
    d) The wind blowing leaves
    Answer: b) A person kicking a ball

  4. What type of force is used when pulling a cart?
    a) Magnetic force
    b) Frictional force
    c) Muscular force
    d) Gravitational force
    Answer: c) Muscular force

  5. Which of these reduces friction?
    a) Sandpaper
    b) Oil
    c) Rubber
    d) Rough surfaces
    Answer: b) Oil

  6. Which of the following is not affected by friction?
    a) Rolling a ball on a smooth surface
    b) Writing with a pencil
    c) Swinging a pendulum
    d) Jumping in the air
    Answer: d) Jumping in the air

  7. What happens when two magnets with the same poles are brought close?
    a) They attract each other
    b) They repel each other
    c) They stick together
    d) They lose their magnetic properties
    Answer: b) They repel each other

  8. Which force is applied when a person pedals a bicycle?
    a) Magnetic force
    b) Gravitational force
    c) Frictional force
    d) Muscular force
    Answer: d) Muscular force

  9. Which of the following is a non-contact force?
    a) Kicking a football
    b) Gravity pulling an object
    c) Pushing a box
    d) Writing with a pen
    Answer: b) Gravity pulling an object

  10. When a book is placed on a table, which force prevents it from falling through the table?
    a) Frictional force
    b) Magnetic force
    c) Gravitational force
    d) Normal force
    Answer: d) Normal force

Energy

  1. Which form of energy do plants use to make food?
    a) Light energy
    b) Sound energy
    c) Heat energy
    d) Electrical energy
    Answer: a) Light energy

  2. What type of energy is produced by burning fuel?
    a) Electrical energy
    b) Sound energy
    c) Heat energy
    d) Kinetic energy
    Answer: c) Heat energy

  3. Which type of energy is stored in a battery?
    a) Electrical energy
    b) Chemical energy
    c) Sound energy
    d) Potential energy
    Answer: b) Chemical energy

  4. Which energy helps a fan rotate when switched on?
    a) Mechanical energy
    b) Electrical energy
    c) Light energy
    d) Chemical energy
    Answer: b) Electrical energy

  5. Which form of energy do we hear as sound?
    a) Light energy
    b) Mechanical energy
    c) Sound energy
    d) Electrical energy
    Answer: c) Sound energy

  6. What type of energy is possessed by water stored in a dam?
    a) Kinetic energy
    b) Potential energy
    c) Chemical energy
    d) Light energy
    Answer: b) Potential energy

  7. Which energy is produced when a hammer hits a nail?
    a) Sound energy
    b) Electrical energy
    c) Light energy
    d) Chemical energy
    Answer: a) Sound energy

  8. What type of energy does a flying bird use?
    a) Light energy
    b) Kinetic energy
    c) Heat energy
    d) Potential energy
    Answer: b) Kinetic energy

  9. Which energy source is renewable?
    a) Coal
    b) Petroleum
    c) Wind
    d) Natural gas
    Answer: c) Wind

  10. The energy of the wind is converted into which form in a windmill?
    a) Heat energy
    b) Mechanical energy
    c) Electrical energy
    d) Chemical energy
    Answer: c) Electrical energy

Work and Energy in Everyday Life

  1. Which of these activities does NOT involve work?
    a) Pushing a stationary wall
    b) Lifting a book
    c) Pulling a toy car
    d) Writing with a pen
    Answer: a) Pushing a stationary wall

  2. What energy is used when cooking on a gas stove?
    a) Light energy
    b) Heat energy
    c) Sound energy
    d) Chemical energy
    Answer: d) Chemical energy

  3. What energy does a stretched slingshot have?
    a) Heat energy
    b) Potential energy
    c) Kinetic energy
    d) Light energy
    Answer: b) Potential energy

  4. What energy does a moving car have?
    a) Heat energy
    b) Potential energy
    c) Kinetic energy
    d) Sound energy
    Answer: c) Kinetic energy

  5. What type of force is used when we lift a bucket of water?
    a) Gravitational force
    b) Magnetic force
    c) Muscular force
    d) Frictional force
    Answer: c) Muscular force

  6. Which force slows down a ball rolling on the ground?
    a) Gravitational force
    b) Frictional force
    c) Magnetic force
    d) Air pressure
    Answer: b) Frictional force

  7. What happens to the energy of a ball as it falls from a height?
    a) Potential energy converts into kinetic energy
    b) Kinetic energy converts into potential energy
    c) Both energies decrease
    d) Both energies increase
    Answer: a) Potential energy converts into kinetic energy

  8. Which energy is used by a television?
    a) Heat energy
    b) Light energy
    c) Electrical energy
    d) Chemical energy
    Answer: c) Electrical energy

  9. What happens to friction when the surface is rough?
    a) It increases
    b) It decreases
    c) It disappears
    d) It stays the same
    Answer: a) It increases

  10. What is the unit of energy?
    a) Kilogram
    b) Meter
    c) Newton
    d) Joule
    Answer: d) Joule

at

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)