WORKING SCIENTIFICALLY

Question 1

Collecting data - Repeatability

Answer 1

Repeating readings more than three times to check for similarity

Question 2

Reproducible data

Answer 2

Take a second set of readings with another instrument or another observer

Question 3

Accuracy

Answer 3

Depending on method,measuring the right thing and not missing things, e.g counting bubbles- use a gas syringe

Question 4

Preciseness

Answer 4

Data close to the mean

Question 5

Systematic error

Answer 5

If a measurement is wrong by the same amount consistently it’s a systematic error

Question 6

Zero error

Answer 6

If equipment isn’t zeroed properly (e.g tareing on scales)

Question 7

What does the gradient show?

Answer 7

Rate of reaction / how the dependent variable changes as you change the independent variable

Question 8

How do you measure the gradient ? rate of reaction?

Answer 8

change in Y/change in X

Question 9

Tera (T)

Answer 9

10(12)

Question 10

Giga (G)

Answer 10

10(9)

Question 11

mega (M)

Answer 11

10(6) (1000 0000

Question 12

deci (d)

Answer 12

0.1

Question 13

centi (c)

Answer 13

0.01

Question 14

milli (m)

Answer 14

0.001

Question 15

micro

Answer 15

10(-6)

Question 16

nano (n)

Answer 16

10(-9)