Basics

Question 1

What are the 7 SI Base units?

Answer 1

Mass(Kg)
Length(m)
Time(s)
Current(A)
Temperature(K)
Amount of Substance(mol)
Luminous Intensity(Cd)

Question 2

What is the independent variable?

Answer 2

The thing that you change in an experiment

Question 3

What is the dependent variable?

Answer 3

The quantity of an experiment that you measure

Question 4

Describe how positive correlation is shown on a graph

Answer 4

A positive gradient with clear line of best fit
One variable increases with the other

Question 5

Describe how negative correlation is shown on a graph

Answer 5

Negative gradient with a clear line of best fit
One variable increase as the other decreases

Question 6

How is no correlation shown on a graph?

Answer 6

No clear line of best fit
No relationship between the variables

Question 7

Define percentage uncertainty

Answer 7

The uncertainty given as a percentage of the measurement.

Measuring larger values reduces the percentage uncertainty

Question 8

What happens to the uncertainties of data if you add or subtract the data values?

Answer 8

You add the absolute uncertainties

Question 9

What happens to the uncertainties of data if you multiply or divide the values?

Answer 9

Add the percentage uncertainties