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# Test: Motion & Time

Test Description

## 10 Questions MCQ Test Science Class 7 | Test: Motion & Time

Test: Motion & Time for UPSC 2023 is part of Science Class 7 preparation. The Test: Motion & Time questions and answers have been prepared according to the UPSC exam syllabus.The Test: Motion & Time MCQs are made for UPSC 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Motion & Time below.
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Test: Motion & Time - Question 1

### Change in position with respect to the surroundings is called

Detailed Solution for Test: Motion & Time - Question 1

Change in position of a body with respect to its surrounding is called as motion.

Test: Motion & Time - Question 2

### The earliest clocks for measuring time during day were

Detailed Solution for Test: Motion & Time - Question 2

Sundials were used for measuring time in earlier days on the basis of shadow position.

Test: Motion & Time - Question 3

### The speed of the vehicle is recorded by

Detailed Solution for Test: Motion & Time - Question 3

The speed of vehicle at particular point of time is recorded by speedometer fitted on the dashboard of vehicle.

Test: Motion & Time - Question 4

The basic unit of speed is:

Detailed Solution for Test: Motion & Time - Question 4

The basic unit of distance is metre (m). The basic unit of time is second (s). Therefore, the basic unit of speed is m/s.

So option D is the correct answer.

Test: Motion & Time - Question 5

One hour is equal to

Detailed Solution for Test: Motion & Time - Question 5

One hour = 60 minute and one minute = 60 seconds. Therefore, one hour= 60 x 60 = 3600 seconds.

Test: Motion & Time - Question 6

Which is the most accurate watch?

Detailed Solution for Test: Motion & Time - Question 6

Atomic watches are the most accurate of all wristwatches. An atomic watch is a wristwatch that is radio-controlled to keep the most accurate time on earth. An atomic watch never needs to have its time or date set/adjusted because it receives a low frequency radio signal each night that keeps it perfectly synchronized with the US atomic clock in Colorado.

Test: Motion & Time - Question 7

S.I unit of time is

Detailed Solution for Test: Motion & Time - Question 7

S.I. unit of time is second.

Test: Motion & Time - Question 8

Speed time graph is straight line for

Detailed Solution for Test: Motion & Time - Question 8

Speed time graph is straight line parallel to x-axis for uniform motion of the body.

Test: Motion & Time - Question 9

The rate of change in position of a body is called

Detailed Solution for Test: Motion & Time - Question 9

The rate of change in position of a body is called speed. S.I. unit of speed is meter per second.

Test: Motion & Time - Question 10

A car is moving with 72 km/hrs. The speed of the car in m/s is

Detailed Solution for Test: Motion & Time - Question 10

We know ,

1km/h=5/18m/s
72km/h=72×5/18m/s
=4×5m/s
=20m/s.

## Science Class 7

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## Science Class 7

163 videos|252 docs|54 tests

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