General science

Question 1

Why can scientists not answer the question…………………..?

Answer 1

Cannot be determined by experiment

based on opinion

ethical/environmental/economic reason

Question 2

Discuss whether it is ethical to use animals in scientific experiments

Answer 2

• animal have no choice and should not be used
• should not make animals suffer
• better to experiment on animals than on humans
• experiments lead to better understanding of knowledge
• experiments may lead to health improvements and cures for humans

Question 3

General chemistry:

The melting point of ……… is precise but the other melting points are approximate why?

Answer 3

…….. is a compound

the others are mixtures

Question 4

Why did scientists include a control group in this study?

Answer 4

for comparison

Question 5

suggest why evidence these scientists found does not definitely mean……

Answer 5

maybe other factors are involved

evidence may not be valid

not enough data

Question 6

suggest how a student could make his results more accurate

Answer 6

repeat the experiment and then calculate a mean

Question 7

Explain why this data would have been better presented as a bar chart

Answer 7

because there is insufficient data for a line graph

Question 8

why did the student think this result was an anomaly?

Answer 8

as it did not fit the pattern of the other results

+ (try to find pattern)

Question 9

Describe one way the student could improve their method so their results are more accurate

Answer 9

repeat the experiment and calculate a mean

Question 10

Why is it important that ………… used in the investigation was kept the same?

Answer 10

so the results can be compared fairly

Question 11

Explain what a student should do if the new data does not seem to support the prediction made

Answer 11

check the new data/repeat experiment

to identify any anomalous results

and reconsider the prediction in the light of new evidence

Question 12

Give advantages in research projects of having a large sample size?

Answer 12

• enough data to indicate relationships

- reduce the effect of anomalous data

Question 13

using children in scientific research raises …………issues

Answer 13

ethical

Question 14

Explain what a prediction is

Answer 14

a forecast based on scientific evidence

Question 15

Why was it important that ……….. was kept the same durig the experiment?

Answer 15

so a comparison can be made

Question 16

Why should this result be tested again?

Answer 16

Because it is an anomalous result

Question 17

Hypothesis

Answer 17

a possible explanation of a problem that can be tested experimentally

Question 18

evidence

Answer 18

the data or observations that are used to support a given hypothesis or belief

Question 19

theory

Answer 19

an idea that might explain the results which is based on scientific results

Question 20

rumour

Answer 20

an idea with no evidence to back it up

Question 21

precession

Answer 21

small divisions on the measuring device gives a high precision

Question 22

reliability

Answer 22

results are considered reliable if they can be repeated

Question 23

ethical

Answer 23

whether something is considered morally right or wrong

Question 24

Explain why scientists alone can not make the decision that…..

Answer 24

government decision

Question 25

why would plotting and collecting more data improve conclusions?

Answer 25

you could confirm the pattern that has been observed

would give a better line of best fit