- Created by: kirsty lonsdale
- Created on: 28-03-14 19:44
H1- how dose science work
- observations are often the starting point for an investigation.
- a hypothesis is a proposal intended to explain certain facts or observations.
- a prediction is an intelligent guess, based on some knowledge.
- an experiment is a way of testing your prediction.
H2- fundamental ideas about how science works
- be on the lookout for non-scientific opinions.
- continuous data give more information than other types of data.
- check that evidence is reproducible and valid.
H3- starting an investigation
- observation is often the starting point for an investigation.
- testing predictions can lead to new science understanding.
- you must design investigations that produce valid results if you are to be believed.
H4- planning an investigation
- care must be taken to ensure fair testing- as far as is possible.
- control variables must be kept the same during an investigation.
- surveys are often used when it is impossible to carry out an experiment in which the independent variable is changed.
- control groups allow you to make a comparison.
- a risk assessment must be made when planning a practical investigation.
H5- designing an investigation
- you can use a trial run to make sure that you choose the best values for your variables.
- the range states the maximum and the minimum values of a variable.
- the interval is the gap between the values of a variables.
- careful use of the correct equipment can improve accuracy and precision.
- you should try to reproduce your…