Module 2

Question 1

What does the prefix pico mean?

Answer 1

(p) x10^-12

Question 2

What does the prefix nano mean?

Answer 2

(n) x10^-9

Question 3

What does the prefix micro mean?

Answer 3

(u) x10^-6

Question 4

What does the prefix milli mean?

Answer 4

(m) x10-3

Question 5

What does the prefix centi mean?

Answer 5

(c) x10^-2

Question 6

What does the prefix deci mean?

Answer 6

X10^-1

Question 7

What does the prefix kilo mean?

Answer 7

(k) x10^3

Question 8

What does the prefix mega mean?

Answer 8

(M) x10^6

Question 9

What does the prefix giga mean?

Answer 9

(G) x10^9

Question 10

What does the prefix Tera mean?

Answer 10

(T) x10^12

Question 11

What is a systematic error?

Answer 11

An error which is made consistently wrong in the same way each time

Question 12

What is a random error?

Answer 12

An error where the nature of the error is random and unpredictable, e.g. Parallax error

Question 13

What does it mean if a measurement is precies?

Answer 13

That all of the readings give a low percentage uncertainty

Question 14

What does it mean if a measurement is accurate?

Answer 14

The percentage accuracy of the measurement to the actual answer is small

Question 15

Calculate the percentage uncertainty in displacement where the initial velocity is 1.0 m/s (±0.1) and a final velocity of 9.0 m/s (±0.5) and a time of 10s (to the nearest second)

Answer 15

S=?
U=1
V=9
A=x
T=10

S=((U+V)/2)*t