Section 2

Question 1

Do your results support the hypothesis you investigated? ( 3 marks) - general format

Answer 1

• yes /no
• identify pattern e.g. increase/decrease
• example of result to show

Question 2

Do your results support the hypothesis you investigated? ( 3 marks)

Answer 2

• Yes
• as intensity of exercise increased, the muscles fatigued quicker
• At rate of one clench per three seconds, it took…, but at rate of one clench per two second it took a quicker time of …

Question 3

Did you get any anomalous results?

Answer 3

• yes/no
• explain that an anomaly is an result that does not fit the pattern
• example: result not close to line of best fit/ stating odd value

Question 4

Describe in detail how you could use repeated readings to get more accurate results (3 marks)

Answer 4

• calculate mean
• EXPLAIN: by adding results together and dividing by number of values
• plot graph - draw line of best and ignore anomalies/ discard anomalies before calculating mean

Question 5

What could you do to reduce risk of an uncertainty if you were to repeat the investigation? (3 marks)
- general format

Answer 5

• identify uncertainty
• suggest HOW to reduce uncertainty
• explain WHY it will reduce uncertainty

Question 6

What could you do to reduce risk of an uncertainty if you were to repeat the investigation? (3 marks)

Answer 6

• Controlling the strength of the clasp
• Use weights instead of clasps
• Control intensity– experiment will be more accurate as the arms will be working with regular weight rather than varying intensity of a clasp

Question 7

Did you use a suitable range?

Answer 7

• YES - clear pattern of results - examples

- NO - unclear pattern – examples

Question 8

suggest and explain ONE reason why people might get different results from you (3 marks)
- general format

Answer 8

• suggest different equipment/technique
• example of different equipment
• explanation of how affects results

Question 9

suggest and explain ONE reason why people might get different results from you (3 marks)

Answer 9

• Strength of clasps
• This could be because they have different fitness levels – more sportier/ gender
• Weaker clasp can continue for longer period of time than stronger clasp

Question 10

Advice for case study supporting hypothesis)

Answer 10

• explain for each one if it supports or not
• look out for anomalies and give values for them
• state if effect of investigation levels out as variable increases / decreases
• explain if they apply to hypothesis

Question 11

How could the results from your investigation be useful in the context you have researched?

Answer 11

• The results have shown that the muscles become more quickly fatigued as the intensity of the exercise increased.
• In athletes’ training, particularly for sprinters, athletes should spend short periods on high intensity exercise with regular rest intervals to build power and strength.
• They should spend longer periods on low intensity exercise in order to build their endurance.
• This will prevent risk of injury and maximise their performance.