Variables and data
What is an independent variable?
The thing you change
The gradient of a distance time graph gives:
Speed
How many cm in a m?
100
What do we use to measure time?
Time/stopwatch
How do we measure the volume of a liquid accurately?
Form eye level
What type of data goes on a bar chart?
Catagoric
The gradient of a velocity time graph gives:
Acceleration
How many m in a km?
1000
What piece of electronic equipment could we use to measure the time it takes for a car to go down a ramp?
Light Gates
What type of error is it when we view a measurement from different perspectives?
Parallax
Distance, time, current, temperature, are examples of what type of data?
Continuous
The area under a velocity time graph gives:
Distance moved
How many mm in a km?
1,000,000
What piece of equipment can we use to measure angles?
Protractor
True of False: Repeating and finding an average makes it more accurate?
False
Controlling variables makes an experiment more....
Accurate
The gradient of a sin(i) vs sin(r) graph gives:
Refractive Index
How many J are in a MJ?
1,000,000
How do we connect a voltmeter to a component?
in parallel
Before we measure the mass of an object we must make sure that the reading is:
Zeroed
A data point which is not with the trend is called an
anomalous result
The gradient of a graph of Current on the Y-axis and Voltage on the X-axis gives:
1/resistance
How many nm are there in a m?
1,000,000,000
What do we use to measure the mass of an object?
Mass Balance
A systematic error is one that:
has the same error each time.