SCHEDULE

1. Brief2. Research3. Candidate research sheet4. Section 15. Practical6. Graph 7. Section 2

A=Fully complete criteriaB=Mostly complete criteriaC=Partially complete

‘SWEATING HELPS TO COOL THE BODY’• Lick the back of your hand.• Blow gently across your hand. • You should already feel a cooling

sensation.• Now, blot your hand dry and use

the opposite hand to feel the actual temperature of your skin.

• It will actually be cooler to the touch!

http://www.youtube.com/watch?v=3JymOF-FADQ

BRIEF “Use a model to investigate a factor that may affect

how quickly sweating cools the body”• Brainstorm factors that affect

sweating• Choose one factor• Note the context• Make notes on how sweating

cools you down using internet and/or books

• Make notes on possible models and techniques

CONTEXT

The wind affects sweating so there is a problem of over cooling on windy days

Sources• http://www.gcsesciencemethods.co.uk/2013/05/mo

delling-sweat-colling-effect.html

• http://www.sheredes.herts.sch.uk/images/uploads/Investigating_Sweating_Science_mar13.pdf

• http://www.markedbyteachers.com/gcse/science/to-measure-heat-loss-in-two-test-tubes-which-represent-bodies-one-which-sweats-the-wet-test-tube-and-one-body-which-doesn-t-sweat-the-dry-test-tube.html

Which is best, 1 best because other not because…

RESEARCH• Research a technique using 2

sources• Google ‘wind speed & sweating’• Write the pros and cons of each

source• Identify variables• Form a hypothesis• Write a risk assessment• Check your ability to draw tables

A student wanted to record the temperature

drop of a cup of tea after 10 minutes. He did

this for cups made of china, plastic,

polystyrene, tin and paper. Draw a table ready to record his

results

SOURCES

• Find 2 sources on a possible procedure

• Compare the sources

• Title & author• Title & web address

• State the advantage of one AND the disadvantage of the other

HYPOTHESIS

• State your hypothesis • Link the effect of the independent variable on the dependent variable

• Explain why this effect happens

METHOD

• Identify the equipment/chemicals required

• Describe the procedure

• List the equipment or draw & label the apparatus set up

• Draw a set of instructions for your procedure

VARIABLES• Identify the Independent

variable

• Identify the Dependent variable

• Identify two Control variables

• The variable you change (write the RANGE of this)

• The variable you discover (write HOW you will measure this)

• The variables you will keep the same (write HOW you will do this)

RISKS

• Identify two hazards • State HOW you will minimise each risk

TABLE

• Draw a table • Use 2 columns-one for the dependent and one for the independent variable

• Label with the correct headings & units

Paper 1

Q1 – What is your hypothesis + why? (should be able to identify both variables) Can say read in book … or noticed that…

Q2 – Which source was best and why? (whereas)

Q3 – Plan + risk assessmentQ4 – Why compare? Check results, see if similar

pattern – spot anomolies, reproducibilityQ5 – Table (headings and units)

GRAPH

• Draw a graph • X axis headings, units, scale

• Y axis headings, units, scale

• Points correctly plotted• Line of best fit correctly

drawn

CONCLUSION

• Interpret your results 1. Do your results support your hypothesis? Describe the trend shown by your data.

2. Describe the patterns shown by your data (quote 2-3 results)

EVALUATION

• Evaluate your procedure by identifying a possible error in your procedure

• Evaluate your data by identifying the presence/absence of any anomalies

• Describe how you would avoid it and explain why this would work. with reasons.

• Explain how you know your data has/hasn’t anomalies

SECONDARY DATA TABLESTABLE A

x y10 120 5

30 12

40 32

50 32

• Draw and label axes• Draw a sketch graph of the

above results• At what value of x did y reach

its maximum ?

TABLE Bx y10 3

20 9

30 20

40 38

50 48

• Add this data to your graph • At what value of x did y reach

its maximum ?• Does this data support the

hypothesis that ‘as x increases, y increases’?

SECONDARY DATA GRAPHS

• What does the graph show?

• What does the graph show?

A

B

wy

x

D

C

Paper 2 Hints

1) Do results support hypothesis? Make sure you quote figures from your results and explain pattern

2) Do you have anomalous results? Say yes or noRefer to patternGive examples from your data

Paper 2 hints cont

3) Range – Make sure you know your rangeSay why it is suitable or not by seeing if the pattern is clear.

4) Uncertainties – Think about what was difficult to control and say why it might affect results.

5) Use of models – Say what you think and give reasons for and against.

Cont.

6) Draw a sketch – remember line and names on axis

7) Using case studiesGo through each one saying if it supports or not. One will be a red herring! Quote figures

8) Context – explain that if you are sweaty at the end of a race it helps to know that if wind is stronger you will cool quicker. So more likely to get hypothermia.