Planning An Investigation Flashcards
Kinetic energy
1 mark
Energy which an object possesses by being in motion.
Variables
3 marks
- Independent Variable
- Dependent Variable
- Controlled Variable
Independent variable
1 mark
The variable that is altered during a scientific experiment.
Dependent variable
2 marks
the variable being tested or measured during a scientific experiment.
Controlled variable
1 mark
A variable that is kept the same during a scientific experiment.
Change in a controlled variable would
1 mark
Invalidate the results.
Hypothesis
5 marks
Or prediction is made with limited evidence at the beginning of a scientific investigation
- Biological knowledge should be used to justify the prediction.
Risk Assessment
2 marks
A careful examination of what could cause harm to people during a scientific investigation.
Hazard
2 marks
Anything that may cause harm, such as chemicals, electricity, extreme heat etc.
Risk
2 marks
The chance, high or low, that somebody could be harmed by hazards identified.
Risk Prevention Methods
1 mark
Strategies put in place to avoid any injuries.
Controlled Experiments are
3 marks
Necessary for comparison purposes + proves that any change in the results is due to the independent variable being altered.
Accuracy of a measurement is dependent on
2 marks
The quality of the measuring apparatus + the skill of the scientist involved.
Risk of Iodine
2 marks
Irritation of the eyes/skin
Prevention of eye irritation caused by chemicals such as Iodine
(1 mark)
Wear goggles
Diagrams
1 mark
Drawn to show the setup of the equipment being used.
Any data collected from a scientific investigation should be recorded in a results table
(1 mark)
Recorded in a results table.
A results table needs to include:
7 marks
- Appropriate headings + units (written in the column heading only).
- All data collected, any repeats obtained.
- Appropriate calculations (e.g. average).
