3.1 Flashcards
(9 cards)
1
Q
What are the si units ?
A
- mass - kg
- current - amps
- temp - kelvin
- time - s
- length - m
- amount of substance - mol
2
Q
What does the prefix p mean ?
A
10 ^-12
3
Q
What does the prefix T mean ?
A
10 ^12
4
Q
What does the prefix n mean ?
A
10^-9
5
Q
What do random error affect ?
A
The precision
6
Q
How can random errors be reduced ?
A
- taking three repeats ( identify anomalies )
- using computers / data logger ( smaller intervals )
7
Q
How are systematic errors formed ?
A
- apparatus or faults in the experimental methods
8
Q
What do systematic errors result in ?
A
- the results being too high or low by the same amount of
9
Q
How can systematic errors be reduced ?
A
- calibrate measurements
