General science Flashcards
Why can scientists not answer the question…………………..?
Cannot be determined by experiment
based on opinion
ethical/environmental/economic reason
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
General chemistry:
The melting point of ……… is precise but the other melting points are approximate why?
…….. is a compound
the others are mixtures
Why did scientists include a control group in this study?
for comparison
suggest why evidence these scientists found does not definitely mean……
maybe other factors are involved
evidence may not be valid
not enough data
suggest how a student could make his results more accurate
repeat the experiment and then calculate a mean
Explain why this data would have been better presented as a bar chart
because there is insufficient data for a line graph
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)
Describe one way the student could improve their method so their results are more accurate
repeat the experiment and calculate a mean
Why is it important that ………… used in the investigation was kept the same?
so the results can be compared fairly
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
Give advantages in research projects of having a large sample size?
- enough data to indicate relationships
- reduce the effect of anomalous data
using children in scientific research raises …………issues
ethical
Explain what a prediction is
a forecast based on scientific evidence
Why was it important that ……….. was kept the same durig the experiment?
so a comparison can be made
Why should this result be tested again?
Because it is an anomalous result
Hypothesis
a possible explanation of a problem that can be tested experimentally
evidence
the data or observations that are used to support a given hypothesis or belief
theory
an idea that might explain the results which is based on scientific results
rumour
an idea with no evidence to back it up
precession
small divisions on the measuring device gives a high precision
reliability
results are considered reliable if they can be repeated
ethical
whether something is considered morally right or wrong
Explain why scientists alone can not make the decision that…..
government decision
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
