Planning 3-6

Independent Variable____________________________

Dependent Variable____________________________

Control Variable

____________________________

How are you going to control this variable____________________________________________________________________________________

Control Variable

____________________________

How are you going to control this variable____________________________________________________________________________________

Control Variable

____________________________

How are you going to control this variable____________________________________________________________________________________

Control Variable

____________________________

How are you going to control this variable____________________________________________________________________________________

Why did you choose this variable____________________________________________________________________________________Why did you choose this variable____________________________________________________________________________________

Planning 3-6

HazardHarm

o_______________________ High /Low______________________o_______________________ High /Low______________________o_______________________ High /Low______________________o_______________________ High /Low______________________

Step by Step Plan

How can I reduce the Hazards:o_________________________________________________________ _________________________________________________________o_________________________________________________________ _________________________________________________________o_________________________________________________________ _________________________________________________________o_________________________________________________________ _________________________________________________________

What science do I need to do this investigation?______________________________________________________________________________________________________________________________________________________________________________

Planning 3-6

I think my results will look like this:______________________________________________________________________________________________________________________________________________________________________________

I think my results will look like this because (use your scientific knowledge: __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Scientific Knowledge____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Independent variable (what you change) UNITS!

Dependent variable (what you measure) UNITS!

Test 1

Test 2 Test 3 Mean

Observing 3-6 : Help Sheet

Labelled with the INDEPENDENT VARIABLE and UNITS

Y

X

Labelled with the DEPENDENT

VARIABLE and UNITS

Table of Results

Graph

Your teacher will help you with scales, and if

you should draw a bar or line graph

Analysis 3- 6

My graph shows that the bigger/smaller_________________________was the bigger/smaller____________________________________was.

On your graph circle any odd (anomalous) results

What does your graph show:__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Do you think your results are any good?____________________________________________________________________________________________________________________

What scientific evidence do you have that supports your results?__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Was your prediction right or wrong?____________________________________________________________________________________________________________________

Did you have any results that where not consistent with the rest of your results?____________________________________________________________________________________________________________________

Why do you think this?____________________________________________________________________________________________________________________

Evaluation 3- 6

Did you think the experiment was any good?______________________________________________________________________________________________________________________________________________________________________________

Where your results reliable (could you reproduce these results again)______________________________________________________________________________________________________________________________________________________________________________

Could you improve your plan in anyway________________________________________________________________________________________________________________________________________________________________________

Describe the practically how you would do this improvement __________________________________________________________________________________________________________________________________________________________________

Could you improve your plan in anyway________________________________________________________________________________________________________________________________________________________________________

Describe the practically how you would do this improvement __________________________________________________________________________________________________________________________________________________________________

My are or are not what I expected __________________________________________________________

Why do you think your results are valid ( what you expected) ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Planning 5-7

Plan

State what your independent Select a suitable range for your independent variable (how many changes are you

going to make); Explain why you have chosen your independent

State your dependent variable Explain why you have chosen your dependent variables; Explain how you are going to take your measurements

Say why you have decided not to investigate any other variable; List all of the control variables;

Explain how you are going to control all the of these variables Plan how you are going to control these variables Explain if you think you are going to have difficulty controlling any of these

Variable How it is going to be controlledIs it hard to control

Sun light Close all the blinds in the roomSome light will still get

into the room though

the door

Write a step by step plan of how you are going to carry out your practical.

Safety

List the hazards that doing your practical pose What harm can these hazards cause How can you reduce the risks Rank your hazards in order of most hazardous to least hazardous :

Hazard Harm Reduce Risk1. Acid, can burn your skin or eyes, w ear goggles and know where the eye wash is in the Leading to burns or lose of room, if you get acid on your hand you need to wash it sight

off straight away

Hypothesis

What scientific knowledge do you need to know for this investigation? What do you think your results will look like? Why do you think your results will look like this, use scientific knowledge to answer this

question.

Observing 5-7

Y

X

Table of Results

Graph

Calculating GradientX

Y

Line of Best fit Gradient = length of Y/ length of X

Analysing gradient e.g. My results have a positive correlation shown by a gradient of 0.4

Plotting your graph using error bars1. Plot the average2. draw a line of best fit3. Plot test 14. Plot test 25. Plot test 3 6. Draw a Key7. Draw Error BarsAnalysing Error BarsError bars that do not over lap show a real difference in data;

Observing Level 6-7 Help Sheet

REAL DIFFERENCE

Line of Best fit

Gradient is a Ratio (No Units)

Analysis 5 – 7

Describing your graph:State what your graph looks like

Was is a positive or negative correlationUse data from your graph to describe the pattern

As the temperature when up the reaction happened twice as quickly or by the end of the experiment it had increased from 10 oC to 20 oC

Where their any odd (anomalous) resultsDid the anomalous results effect you patternExplain how any anomalous results could have effected your

averageIs X directly proportional to Y

Conclusion How did your experiment go?

What evidence do you have that your experiment went well or notExplain how your results support or don’t support your predictionHow have your results enabled you to answer the original questionWhat results are not consistent with the rest of your results

Can you suggest using scientific reasons why these results are anomalous

Do the odd results make you think that the results are a sign that the theory is not correct

Can you offer an alternative conclusion to the one you have already suggested?

Which one do you think is more likely.

Evaluation 5 – 7Describe which specific results are reliable.Make a practical suggestion of how to improve your experiment

For a level 6 you will need to do a detailed practical suggestionFor level 7 you will have to write a detailed plan of how to improve

your experimentAre your conclusions valid (what you expected to get)Why do you think your results are valid?How might your improvement make your results more valid?Describe any further investigations / experiments