Key terms Flashcards
hypothesis
what the investigation is about and what you will do
independent variable
the part of the investigation that you change
dependent variable
the part that you measure - the results
control variable
to make it a fair test by keeping some things the same
continuous variables
- a line graph
categoric variables
- ordered variables
- bar chart
discrete variables
- line graph with points
random errors
errors caused by things we can’t control, or if we happen to make a mistake
systematic errors
errors caused by inaccurate equipment
reliability
if you and someone else does the same experiment and the results are the same, the results are reliable
range
the biggest results take away the smallest
anomaly
data that does not fit other results - get rid of it
why do you repeat data?
to increase accuracy by taking readings and use an average
problems with anaerobic respiration
- releases much less energy from glucose compared to aerobic
- lactic acid is poisonous waste
average
add the results all up and divide by how many results there were
what is respiration?
a chemical reaction which happens in every cell of the body
aerobic respiration
process of giving the body every with oxygen
