Introduction to Physics International GCSE
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11 Terms
What is Physics?
It is the study of energy, matter & natural phenomena. Physics is the collection of Laws & Principles which govern the behavior of nature.
What is meant by Physical quantity?
A quantity that we can measure.
What is the formula for a physical quantity’s structure?
Q=Nu
Q=physical quantity, N=number, u= unit
What are 3 systems of Physical quantity?
F.P.S (Foot/feet, Pound, Second)
C.G.S (Centimetre, Gram, Second)
M.K.S (Metre, Kilogram, Second)
Fill in the prefix, symbol, power of ten
Just yap this lol :)
What is Scientific notation/Standard form?
In standard form, numbers are expressed using powers of 10 and it has only 1 digit before the decimal point.
What are 2 subdivisions of physical quantity?
Scalar and Vector
What is a scalar quantity?
A quantity that has only magnitude. EXAMPLE: mass, length, temperature, energy, speed.
What is a vector quantity?
A quantity that has both magnitude & direction. EXAMPLE: velocity, acceleration, force, weight.
What does Vector Symbol mean?
A vector can be represented by an arrow. The length of an arrow is proportional to the magnitude of a vector. Direction of the arrow represents the direction of the vector.
How is the arrow for the "weight"?
The arrow will always face downward because the Earth pulls objects to the center.