8 Questions
What is the state of a body that does not change its position with respect to time?
Rest
What type of motion does a sprinter running a 100 metre race exhibit?
Rectilinear motion
What is the measure of how far or lengthy something is?
Distance
What is the purpose of a unit in measurement?
To set up a common standard or convention
What type of motion does a pendulum exhibit?
Periodic motion
What is an example of circular motion?
The moon revolving across the earth
What is the term for an object moving in a straight line direction?
Rectilinear motion
What is the term for an object that changes its position with respect to time?
In motion
Study Notes
Introduction to Motion
- A body is said to be at rest when it doesn't change its position with respect to time.
- A body is said to be in motion when it changes its position with respect to time.
Types of Motion
- Rectilinear motion: when a body moves in a straight line direction (e.g., a coin falling from a building, or a sprinter running a 100-meter race).
- Circular motion: when an object follows a circular path of motion (e.g., the moon revolving around the Earth).
- Periodic motion: when an object moves to and fro from a mean or steady position, or repeats the motion (e.g., a pendulum, or a race car taking laps of a circuit).
Measurement of Distances
- Distance is the measure of how far or long something is (e.g., the length of a table, or a football field, or how far Mumbai is from Delhi).
- Length can be measured in terms of a unit, which is a comparison of an unknown quantity with that of a known quantity.
- Units are necessary to establish a common standard or convention worldwide to make calculations and evaluation simpler.
Practice and assess your knowledge of Science Chapter 10 with this worksheet for Class 6 students. Check your understanding with these exercises and reinforce your learning.
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