Olympiad Test: Work, Force And Energy -1


20 Questions MCQ Test Science Olympiad Class 4 | Olympiad Test: Work, Force And Energy -1


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Attempt Olympiad Test: Work, Force And Energy -1 | 20 questions in 40 minutes | Mock test for Class 4 preparation | Free important questions MCQ to study Science Olympiad Class 4 for Class 4 Exam | Download free PDF with solutions
QUESTION: 1

Choose the wrong statement among followings

Solution:

Acoustics is the interdisciplinary science that deals with the study of all mechanical waves in gases, liquids, and solids including vibration, sound, ultrasound and infrasound.

QUESTION: 2

In which of the following situations no work is done?

Solution:
QUESTION: 3

The following is a diagram of a simple electromagnet.

Q. How could this electromagnet be made stronger?

Solution:
QUESTION: 4

A _________  jet travels faster than sound.

Solution:
QUESTION: 5

Why we sprinkle talcum powder on a carom board?

Solution:
QUESTION: 6

Look at the following picture carefully. First identify the picture. The below machine is a combination of two simple machines. Which simple machines combine to make it?

Solution:
QUESTION: 7

Electricity traveling through a wire is an example of

Solution:
QUESTION: 8

Rahul is applying force on a moving object in the same direction, the speed of the object:

Solution:
QUESTION: 9

When we throw a ball into the air, it falls back. The force responsible for this is:

Solution:
QUESTION: 10

In which of these activities, the sense of hearing is least important?

Solution:
QUESTION: 11

Two girls playing table tennis. First girl hit the ball over the net and at a Point say ‘T’, the other girl hit it back with a lot of force.
What would happen at point ‘T’?
1. The force caused a change in the size of the ball.
2. The force caused a change in the direction of the ball.
3. The force caused the ball to stop moving.

Solution:
QUESTION: 12

Air pressure is measured with a(n)

Solution:
QUESTION: 13

These products of nature are limited. Resources such as coal and oil are________________ , which means that when they are gone, nature cannot make them again. It is very important to limit their use and find other resources to replace them.

Solution:
QUESTION: 14

The _______________ works by using fuel derived from living and dead biological organisms.

Solution:
QUESTION: 15

Look at the lever below.

Q. Which object has the similar working principle as the above leves.

Solution:
QUESTION: 16

While walking, some or all of the following types of energy and work are involved:

Solution:
QUESTION: 17

What happens to the total energy of a moving object if all the applied forces are conserved?

Solution:
QUESTION: 18

Mark the action in which work is being done:

Solution:
QUESTION: 19

As defined in physics, work is done:

Solution:
QUESTION: 20

If the resultant force acting on a body of constant mass is zero, the body’s momentum is:

Solution:
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