OCR A LEVEL PHYSICS, OCR A-LEVEL PHYSICS, PHYSICS STUDY GUIDE WITH COMPLETE SOLUTIONS

OCR A LEVEL PHYSICS, OCR A-LEVEL PHYSICS,
PHYSICS STUDY GUIDE WITH COMPLETE
SOLUTIONS




S.I. unit and symbol for mass? - ✔✔ANSWER✔✔->>Kilogram, kg


S.I. unit and symbol for length? - ✔✔ANSWER✔✔->>Metre, m


S.I. unit and symbol for time? - ✔✔ANSWER✔✔->>Second, s


S.I. unit and symbol for temperature? - ✔✔ANSWER✔✔->>Kelvin, K


S.I. unit and symbol for electrical current? - ✔✔ANSWER✔✔-
>>Ampere, A


S.I. unit and symbol for amount of substance? - ✔✔ANSWER✔✔-
>>Mole, mol

,S.I. unit and symbol for luminous intensity? - ✔✔ANSWER✔✔-
>>Candela, Cd


What's a physical quantity? - ✔✔ANSWER✔✔->>A physical property
that can be measured or quantified
- Made up of a magnitude (value) and appropriate units


Prefix for 10^12 - ✔✔ANSWER✔✔->>Tera, T


Prefix for 10^9 - ✔✔ANSWER✔✔->>Giga, G


Prefix for 10^6 - ✔✔ANSWER✔✔->>Mega, M


Prefix for 10^3 - ✔✔ANSWER✔✔->>Kilo, k


Prefix for 10^-1 - ✔✔ANSWER✔✔->>Deci, d


Prefix for 10^-2 - ✔✔ANSWER✔✔->>Centi, c


Prefix for 10^-3 - ✔✔ANSWER✔✔->>Mili, m

, Prefix for 10^-6 - ✔✔ANSWER✔✔->>Micro, μ


Prefix for 10^-9 - ✔✔ANSWER✔✔->>Nano, n


Prefix for 10^-12 - ✔✔ANSWER✔✔->>Pico, p


What is an estimate? - ✔✔ANSWER✔✔->>An educated guess at an
answer


What is a random error? - ✔✔ANSWER✔✔->>An error caused by
unknown, unpredictable changes during an experiment. Human error
(e.g. misreading) is also a random error - can lead to inconsistencies
when repeating


Examples of random errors? - ✔✔ANSWER✔✔->>E.g. fluctuations in
light or temperature


What is a systematic error? - ✔✔ANSWER✔✔->>An error involving the
measuring equipment. Often present in all readings taken, and can be
removed once identified.
- Systematic errors tend to shift all the points in the same direction