Physics (quantities & measurements )
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12 Terms
What is accuracy?
How close a measurement is to the true value.
What is precision?
How close repeated measurements are to one another.
Which type of error affects precision?
Random error.
Which type of error affects accuracy?
Systematic error.
Can repeating measurements eliminate systematic errors?
No
How can random errors be reduced?
By repeating measurements and averaging the results.
What is resolution?
The smallest change an instrument can measure.
Which instrument measures mass?
A balance
Which instrument measures temperature?
A thermometer
1 kg equals how many grams?
1000 g.
Can a measurement be precise but inaccurate?
Yes
A scale always measures every object as 2 g heavier than its true mass. This is an example of:
Systematic error