Science - SIS Practicals Flashcards
For all SIS test related things. (Practicals)
What is independent variable?
The thing that you change in the experiment.
What is dependent variable?
The thing that you measure in the experiment.
What are control variables?
The things that remain the same during an experiment.
What is an aim?
What you are trying to achieve during an experiment. The aim should include the IV and the DV.
What is a hypothesis?
An educated guess of the outcome of the experiment. The hypothesis should include the IV and the DV.
In a risk assessment table, what are the three columns needed?
Dangerous item, possible harm, and safety precautions
Why do we need to assess the risks of an experiment?
To keep the people conducting the experiment and other animals and/or objects from being harmed.
What is equipment?
The objects needed to conduct the experiment.
Why do we put measurements when stating what equipment is needed?
So we can be precise and other people can follow our method with precision.
What is quantitive data?
Data that is in the form of numbers. For example, 5cm or 100mL or 8 balls.
What is qualitive data?
Data that is in the form of expression. For example, tasty or it was salty or it was really cold.
What is a method?
A step by step procedure used by someone to achieve something.
Why do we have methods in science?
So people can follow it to recreate the experiment.
Why are methods numbered?
So that we can follow them in order.
What are two ways that you can record data?
In a table or in a graph.
What type of graphs can you use to record data?
Line graph, bar graph, pie/sector graph, line graph.
Why do we do multiple trials of the same IV?
To get an accurate reading of the actual value.
How do you calculate the average of multiple values?
sum of all the values divided by the number of values
What goes on the left side of a table?
The IV.
What goes in the middle of the table?
The data recorded (or the DV).
What goes on the right of the table (only when there are multiple trials)?
The Mean/Average.
What is a parallax error?
You take a measurement when you aren’t looking at it from eye level.
What is a zero error?
When an instrument doesn’t say 0 when it should say 0.
What is an instrument error?
When an instrument is faulty. Zero error and Instrument error are different things.
What is reading error?
It is when you read it incorrectly. For example, the water goes in between two measuring lines so you just take a rough estimate.
What is an error?
Something that cannot be avoided even with care.
What is a mistake?
Something that CAN be avoided with care.
When a question asks for the precision of the data, what do you compare the data to?
You can either compare the data to the actual data in the background information or if you conducted multiple trials you can see the difference in the trials.
