Biology AQA Flashcards
Hypothesis:
Proposed explanation based on known knowledge and evidence
Representational model:
A simplified description or diagram to represent what is going on in real life
Computational model:
Computerised simulations of a complex real-life process
Name some limitations of models
- It’s hard to account for every factor that may influence your representation
- Variations between regions (especially for climate change models)
Regional variations:
Variations in environment between different regions- often effecting the results you get depending on the region you’re in
Economic issues that stop scientific developments:
Society can’t always afford to do the things which scientists suggest without it affecting the budgets in other (perhaps crucial) areas
Social issues that stop scientific developments:
When decisions based on scientific evidence affect people and their lifestyle
Personal issues that stop scientific developments:
When decisions based on scientific evidence might affect the lifestyle of specific people
Environmental issues that stop scientific developments:
Human activity and development normally affects the natural environment
Convert: mm to µm
x1000
Convert: µm to mm
÷1000
Convert: µm to nm
x1000
Convert: nm to µm
÷1000
Convert: m^3 to dm^3
x1000
Convert: dm^3 to m^3
÷1000
Convert: dm^3 to cm^3
x1000
Convert: cm^3 to dm^3
÷1000
uncertainty=
uncertainty = range ÷ 2
Anomalous result:
Results that don’t show correlation to the majority of the other collected results- could be due to human error
Name ways in which you can make an experiment more accurate
- changing the way you controlled a variable
- increasing the number of measurements taken
- narrower intervals
magnification =
magnification = image size ÷ real size
