4th Grade > Science
FORCE WORK AND ENERGY MCQs
Total Questions : 40
| Page 2 of 4 pages
Answer: Option A. -> potential
:
A
Potential energy is the energy possessed by a body due to it's position. For example, if a wheelbarrow is placed on top of a hill, then it possesses potential energy.
:
A
Potential energy is the energy possessed by a body due to it's position. For example, if a wheelbarrow is placed on top of a hill, then it possesses potential energy.
Answer: Option B. -> Carrying a bag for 10 km
:
B
The work done is directly proportional to the displacement. Hence, the work done will be maximumwhen a bag is carried for 10 km.
:
B
The work done is directly proportional to the displacement. Hence, the work done will be maximumwhen a bag is carried for 10 km.
Answer: Option B. -> An object would never return if thrown up.
:
B
The gravitational force of Earth keeps everything binded on the surface. If we throw any object in the absence of gravity, it would fly-off forever.
:
B
The gravitational force of Earth keeps everything binded on the surface. If we throw any object in the absence of gravity, it would fly-off forever.
Answer: Option B. -> push, pull
:
B
A force is defined as a push orpull that can cause an object to move, remain in place orchange its shape.
:
B
A force is defined as a push orpull that can cause an object to move, remain in place orchange its shape.
Answer: Option D. -> work
:
D
Work is said to be done when a force applied on an object moves that object. Work is calculated by multiplying the force applied onthe object to the movement or displacement of the object.
:
D
Work is said to be done when a force applied on an object moves that object. Work is calculated by multiplying the force applied onthe object to the movement or displacement of the object.
Answer: Option D. -> Contact, Non-Contact
:
D
The two main types of forces are contact and non-contact forces.
:
D
The two main types of forces are contact and non-contact forces.
Answer: Option B. -> False
:
B
The force of gravity pulls objects towards the centre of the Earth.
:
B
The force of gravity pulls objects towards the centre of the Earth.
Answer: Option B. -> magnetic force
:
B
A magnet attracting iron pins is an example of magnetic force.
:
B
A magnet attracting iron pins is an example of magnetic force.
Answer: Option B. -> friction
:
B
Friction always acts opposite to the motion. Hence, a moving ball on the ground comes to a stop after some time because of friction.
:
B
Friction always acts opposite to the motion. Hence, a moving ball on the ground comes to a stop after some time because of friction.
Answer: Option A. -> Force of gravity
:
A
Due to the gravitational force of Earth, every object is attracted towards the earth. Therefore the ball will be attracted towards the centre of the earth, so it will come back.If there was no gravity on Earth then the ball if thrown up, will never come back.
:
A
Due to the gravitational force of Earth, every object is attracted towards the earth. Therefore the ball will be attracted towards the centre of the earth, so it will come back.If there was no gravity on Earth then the ball if thrown up, will never come back.
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