Science Practical Prep

Question 1

What is the scientific method in order

Answer 1

1. Observation/question
2. Hypothesis
3. Experiment
4. Graph
5. Evaluate
6. Draw Conclusions

Question 2

What are the components of an experiment in order

Answer 2

Determine…
Independant variable(s)
Dependant variable(s)
Controlled variable(s)
Materials
Method
Risk assessment

Question 3

What do you need to consider when evaluating an investigation (in order)

Answer 3

Accuracy
Precision
Reliability
Validity

Question 4

What is accuracy

Answer 4

How true and exact the data is to the final accepted value

Question 5

What is precision

Answer 5

How well they measured, indicated by how similar data values are to each other

Question 6

What is reliability

Answer 6

How trustworthy the experiment is, indicated by its consistency across multiple trials and in other experiments as well as who conducted the experiment and the year it was conducted

Question 7

What is validity

Answer 7

It’s relevance to the question being investigated and the conclusions being made

Question 8

What are the parts to a risk assessment

Answer 8

Hazard
Risk
Control (prevention and first aid)

Question 9

Independant variable

Answer 9

The variable you change so that you can observe how the change affects something

Question 10

Dependant variable

Answer 10

What inevitably will change due to you changing the independant variable - what you are measuring

Question 11

Controlled variable

Answer 11

A variable you keep the same, making sure it never changes

Question 12

How do you find the average of a data set

Answer 12

Add all of the data values together and divide the answer by the no. of data values there were

Question 13

Hypothesis

Answer 13

A statement that pressumes an explanation

Question 14

Qualitative

Answer 14

An observation that doesn’t involve numbers

Question 15

Quantitative

Answer 15

An observation that involves numbers

Question 16

If there is liquid in a test tube and the surface level is concave, do you measure from the base of the curve or the top corners of the curve

Answer 16

The base

Question 17

What are the parts of a scientific report in order

Answer 17

Aim/abstract
Hypothesis
Materials
Method
Diagram
Risk Assessment
Results
Discussion
Conclusion

Question 18

Aim/abstract

Answer 18

The purpose of an experiment/what are you investigating and why

Question 19

Aim structure

Answer 19

The aim of the experiment is to determine whether X is affected by Y

Question 20

Results

Answer 20

present data in graphs and state your quantitative and qualitative observations

Question 21

Discussion

Answer 21

State what happened to each type of variable and then evaluate your experiment using the key points:

Accuracy
Precision
Reliability
Validity

Question 22

Conclusion

Answer 22

Summarise your findings and state whether your hypothesis was proven or disproven

Question 23

How is discrete categorical data represented

Answer 23

A bar chart

Question 24

How is continuous represented

Answer 24

A line graph

Question 25

Is an outlier included when calculating the average?

Answer 25

No

Question 26

Structure for describing the trend in a graph

Answer 26

Observation/trend
Quantitative ratio
Restate observation/trend
Limit (when does this stop and start being a trend and)
Quantitative ratio where the trend stops