Measurement In Science and Technology
NIOS · Class 10 · Science & Tech
Flashcards for Measurement In Science and Technology — NIOS Class 10 Science & Tech. Quick Q&A cards covering key concepts, definitions, and formulas.
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Get startedWhat is measurement?
Answer
Measurement is a kind of counting. It means counting how many times a chosen standard scale is used to measure a physical quantity.
Why is measurement necessary in science and daily life?
Answer
Measurement is necessary for accurate buying and selling, cooking, stitching, sports, travelling, and scientific calculations. It helps avoid confusion and conflict.
What is a unit?
Answer
A unit is a measure, device, or scale in terms of which a physical quantity is measured.
What are the three essential characteristics of a good unit?
Answer
A good unit must be relevant, convenient, and well defined.
Why are body-based units like hand span or foot not suitable for accurate measurement?
Answer
They vary from person to person, so they are arbitrary and inaccurate. Different people get different results for the same object.
What was the standard cubit used by the Egyptians?
Answer
It was the distance between the elbow and the tip of the middle finger of the Pharaoh ruling Egypt around 3000 B.C.
What did King Henry-I define as a yard?
Answer
He defined a yard as the distance from the top of his nose to the end of his thumb on an outstretched arm.
What is a furlong and how long is it?
Answer
A furlong was the distance a pair of oxen could plough without resting. It equals 220 yards.
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