Test: Force, Energy & Work - 2
10 Questions MCQ Test Science for Class 4 | Test: Force, Energy & Work - 2
Work is said to be done when ______ produces displacement of a body.
Work is said to be done when energy produces displacement of a body.
Energy can be defined as
Energy can be defined as the capacity to do work.
Radha pushed a heavy table but failed to move it. Which of the following is TRUE of the above statement?
Work is said to be done when an object is displaced or moved from one place to another by the application of force.
If Ravi is able to move the table through a distance, then ____ is said to be done.
Work is said to be done only when a push or pull moves something that has weight, through a distance,
A football kicked by a boy rolls on the ground to some distance and stops. The force which stops the ball is
The force which stops the ball or which opposes the motion is called frictional force.
When a pin wheel is placed against wind, it begins to spin. This proves that
Moving air has energy. Since moving air can make a pin-wheel move, it has energy.
In which of the following electrical energy is used to heat substances?
In a Microwave oven, heat energy is used to heat the substances.
The energy used for cycling comes from
We get energy in the form of chemical energy from digested food to do work.
The ultimate source of our energy is
The ultimate source of energy is the sun.
To do work, we need
We need energy to do work.
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