Statistics for AQA - A Level Physics - Physics Skills

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General Stats

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The average score is 0 of 41

Answer Stats

Question	Answer	% Correct
What is the precision of a micrometer	0.01mm	0%
What is the precision of vernier calipers	0.1mm	0%
T - This prefix means?	10^12	0%
p - This prefix means?	10^-12	0%
c (centi) - This prefix means?	10^-2	0%
m - This prefix means?	10^-3	0%
k - This prefix means?	10^3	0%
µ - This prefix means?	10^-6	0%
M - This prefix means?	10^6	0%
n - This prefix means?	10^-9	0%
G - This prefix means?	10^9	0%
What is the precision of a metre rule	1mm	0%
What is the base unit of current	A	0%
What is relative uncertainty	(Absolute uncertainty ÷ 'calculated OR measured value')	0%
What is a line of worst fit?	A line that passes through the error bars with the greatest possible difference in gradient from the line of best fit	0%
Define systematic Error	An error that follows a consistent pattern	0%
Define zero error	An error that occurs due to the measuring instrument reading a non-zero output when there is no input	0%
What is the precision of a multimeter	Depends on the scale selected	0%
How do you avoid parallax error	Ensure eye, object and scale are all in line with each other OR ensure object and scale are directly adjacent to each other	0%
How do you find uncertainty in a gradient?	± (gradient of the line of best fit − gradient of the line of worst fit)	0%
Define accuracy	How close a measurement is to the 'true' or accepted value	0%
What is the base unit of mass	kg	0%
What are the units of density	kgm^-3	0%
What is the base unit of temperature	K (Kelvin)	0%
What are error bars?	Lines to show the range of the absolute uncertainty of each data point on a graph	0%
What is the base unit of length	m	0%
What is the base unit of time	s	0%
Define repeatability	Similar results would be obtained if the experimental method was conducted again	0%
Define control variable	Something that must be kept constant to prevent it affecting the dependent variable	0%
How do you calculate the total uncertainty if quantities are added or subtracted?	The absolute uncertainties are added together	0%
How do you calculate the total uncertainty if quantities are multiplied or divided?	The percentage uncertainties are added together	0%
How do you calculate the total uncertainty if a quantity is raised to a power?	The percentage uncertainty is multiplied by that power	0%
What is the precision of a stopclock	± the precision of the instrument	0%
What is the absolute uncertainty in length	± the precision of the instrument	0%
What is the absolute uncertainty from a digital scale	± ½ the precision of the instrument	0%
What is the absolute uncertainty in a repeated readings	± ½ the range of the repeats	0%
Define reproducibility	The same result can be obtained using different equipment and/or techniques	0%
Define precision	The smallest division in the scale of a measuring instrument/The smallest non-zero reading an instrument can take	0%
How do you ensure a metre rule is vertical	Use a plumb line, set square or spirit level	0%
What are the units of potential difference	V	0%
Define percentage uncertainty	( (Your value - 'calculated OR measured' value) ÷ 'calculated OR measured' value) × 100	0%