Chapter 7 Motion And Measurement Of Distance Flashcards
How to make a string length?
Take a small length of string and mark 2 points on it this will be a string length.
What is the unit?
Measurement means the comparison of an unknown quantity with some known quantity. This is known fixed quantity is called a unit.
What is a Cubit?
Cubit is the length from the elbow to the fingertips.
In which year and who created the measurement called metric system?
In 1790, the French created a standard unit of measurement called the Metric system.
What is the SI unit of length?
Meter
How many types of motion are there? which are they?
•Random motion •rectilinear motion •circular motion •periodic motion
Which are the various types of ancient methods of measurement
•Hand span
•foot span
•cubit
•Uncia
What is periodic motion?
Motion that repeat itself after some period of time is called periodic motion.
What is circular motion?
In circular motion, an object moves such that its distance from a fixed point remains the same.
Examples for circular motion..
•Wheel of a vehicle
•Blades of a fan •hand of a clock
Examples for periodic motion.
The branch of a tree moving back and forward
motion of a child on a swing
strings of a guitar
