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Flashcards in General science Deck (25):
1

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

Cannot be determined by experiment

based on opinion

ethical/environmental/economic reason

2

Discuss whether it is ethical to use animals in scientific experiments

-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

3

General chemistry:

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

........ is a compound

the others are mixtures

4

Why did scientists include a control group in this study?

for comparison

5

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

maybe other factors are involved

evidence may not be valid

not enough data

6

suggest how a student could make his results more accurate

repeat the experiment and then calculate a mean

7

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

because there is insufficient data for a line graph

8

why did the student think this result was an anomaly?

as it did not fit the pattern of the other results

+ (try to find pattern)

9

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

repeat the experiment and calculate a mean

10

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

so the results can be compared fairly

11

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

check the new data/repeat experiment

to identify any anomalous results

and reconsider the prediction in the light of new evidence

12

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

- enough data to indicate relationships

- reduce the effect of anomalous data

13

using children in scientific research raises ............issues

ethical

14

Explain what a prediction is

a forecast based on scientific evidence

15

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

so a comparison can be made

16

Why should this result be tested again?

Because it is an anomalous result

17

Hypothesis

a possible explanation of a problem that can be tested experimentally

18

evidence

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

19

theory

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

20

rumour

an idea with no evidence to back it up

21

precession

small divisions on the measuring device gives a high precision

22

reliability

results are considered reliable if they can be repeated

23

ethical

whether something is considered morally right or wrong

24

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

government decision

25

why would plotting and collecting more data improve conclusions?

you could confirm the pattern that has been observed

would give a better line of best fit