EASY
7th CBSE
IMPORTANT
Earn 100

Why are pendulum clocks not used commonly nowadays?

Important Questions on Time and Motion

EASY
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Time and Motion>Find Out
We cannot use pendulum in small clocks or wristwatches. In place of pendulum, wheel balance is used in them. How does it work?
MEDIUM
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Time and Motion>PRACTICE TIME>Q 1

State whether the given statement is True or False. Correct the false statement.

Minute is the standard unit for measuring time.

EASY
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Time and Motion>PRACTICE TIME>Q 2
The time taken by a pendulum to complete one oscillation is called its time period.
EASY
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Time and Motion>PRACTICE TIME>Q 3
A pendulum consists of a bob and a string.
EASY
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Time and Motion>PRACTICE TIME>Q 4

State whether the given statement is True or False. Correct the false statement.

The SI unit of time period is Hertz (Hz).

EASY
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Time and Motion>PRACTICE TIME>Q 5

State whether the given statement is True or False. Correct the false statement.

A stopwatch cannot be used to measure the exact time.

EASY
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Time and Motion>Think and Discuss
How do you think the traffic police get to know the speed of a moving vehicle?
EASY
7th CBSE
IMPORTANT
Sciwise - A coursebook of Science>Chapter 15 - Time and Motion>PRACTICE TIME>Q 1
What helps you to identify whether the object is moving fast or slow?