Chapter 1 Working With Scientific Data

Question 1

Data

Answer 1

Measurements and observations about something

Question 2

Errors

Answer 2

Small changes to measurements that cannot be avoided even with care

Question 3

First hand data

Answer 3

Data you collect yourself from an experiment

Question 4

Instrument error

Answer 4

Error due to a faulty instrument or using it at a temperature it is not designed for.

Question 5

Mistakes

Answer 5

Can be avoided with care.

Question 6

Average

Answer 6

Mean; add up all the good values and divide them by how many there are

Question 7

Parallax error

Answer 7

Error caused by not having directly in line with the measurement

Question 8

Qualitive data

Answer 8

Observations that are descriptive only (words)

Question 9

Quantitive data

Answer 9

Measurements that use numbers only.

Question 10

Reading error

Answer 10

Error due to guess work when the measurement sits between the marking on the instrument.

Question 11

Second hand data

Answer 11

Data you have not found through an experiment; comes from textbooks, encyclopaedias,Internet etc.

Question 12

Tare

Answer 12

changing th zero on an electronic balance.