Question

Subject:- Science
Class:- 7
Book:- NCERT SCIENCE CLASS 7
Chapter:- Motion and Time️
Define:-
1) Graphs
2) Bar graph
3) Non-uniform motion
4) Uniform motion
5) Simple pendulum
6) Oscillation
7) Speed
8) Time period
9) Unit of time

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Answer 1

Explanation:

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Answer 2

Answer:

1) A graph is a line straight or curved that shows relation between two quantities out of which one varies as a result of change in other.

2) A bar chart or bar graph is a chart or graph that presents categorical data with rectangular bars with heights or lengths proportional to the values that they represent.

3) A body is said to be in a non-uniform motion if it travels unequal distances in equal intervals of time.

4) Uniform motion along a line is the very special kind of motion that occurs when an object moves with unvarying speed in a fixed direction.

5) A simple pendulum consists of a small metal ball (called bob) suspended by a long thread.

6) Oscillation is the repetitive variation, typically in time,bof some measure about a central value or between two or more different states.

7) Speed is a scalar quantity that refers to "how fast an object is moving."

8) The time period is the time taken by a complete cycle of the wave to pass a point, Frequency is the number of complete cycle of waves passing a point in unit time.

9) A unit of time or midst unit is any particular time interval, used as a standard way of measuring or expressing duration.

Explanation:

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