Topic 14: Practical Work In Physics

Question 1

Accurate

Answer 1

A measurement that is close to the true value

Question 2

Data

Answer 2

Information, in any form, that has been collected

Question 3

Precise

Answer 3

Measurements where repeated measurements show very little spread

Question 4

Prediction

Answer 4

A statement suggesting what may happen in the future

Question 5

Range

Answer 5

The spread of data, showing the maximum and minimum values of the data

Question 6

Repeatable

Answer 6

An experiment that gives the same results when the same experimenter uses the same method and equipment

Question 7

Reproducible

Answer 7

An experiment that gives the same results when a different person carries it out, or a different set of equipment or technique is used

Question 8

Resolution

Answer 8

This is the smallest change in the quantity being measured (input) of a measuring instrument that gives a perceptible change in the reading

Question 9

Uncertainty

Answer 9

The interval within which the true value can be expected to lie

Question 10

Variable

Answer 10

Physical, chemical or biological quantities or characteristics

Question 11

Control variable

Answer 11

A variable that is kept constant during an experiment

Question 12

Dependant variable

Answer 12

A variable that is measured as the outcome of an experiment

Question 13

What are the seven SI Base Units?

Answer 13

Time - second - s
Mass - kilogram - kg
Length - metre - m
Temperature - Kelvin - K
Electric current - Ampere - A
Amount of a substance - mole - mol
Luminous intensity - Candela - cd