Required practical: Reaction time (Part 2)

This is the second of two lessons on the required practical investigating the effect of a named factor on reaction time. In this lesson we will be looking at evaluating our results, looking specifically at repeatability and reproducibility.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Q1.Select the missing word from the options below to complete the flow chart: Stimulus → receptor → coordinator → ____________ → response

Sensory neurone Motor neurone Effector Hormone

1/7

Q2.The independent variable is the variable that you....

Measure Change Keep the same Ignore

2/7

Q3.A student wants to investigate how reaction time is affected by caffeine using the ruler drop test and measuring the distance the ruler was caught at. What is the independent variable?

Whether or not the student has had caffeine Whether or not the student has had sugar The distance the ruler was caught at Height the ruler was dropped from Time after drinking the caffeine Reaction time

3/7

Q4.A student wants to investigate how reaction time is affected by caffeine using the ruler drop test and measuring the distance the ruler was caught at. Select the three control variables?

Select three (3) boxes

4/7

Q5.What graph should you use to represent continuous data?

Bar chart Pie chart Histogram Line graph

5/7

Q6.Calculate the mean of the following values - 12, 13, 13, 14, 15, 15, 16 and 32.

14 16.25 98 130

6/7

Q7.What is the name of the gap between two neurones?

Dendron Cell body Axon Synapse

7/7

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Q1.Select the missing word from the options below to complete the flow chart: Stimulus → receptor → coordinator → ____________ → response

Sensory neurone Motor neurone Effector Hormone

1/7

Q2.The independent variable is the variable that you....

Measure Change Keep the same Ignore

2/7

Q3.A student wants to investigate how reaction time is affected by caffeine using the ruler drop test and measuring the distance the ruler was caught at. What is the independent variable?

3/7

Q4.A student wants to investigate how reaction time is affected by caffeine using the ruler drop test and measuring the distance the ruler was caught at. Select the three control variables?

Select three (3) boxes

4/7

Q5.What graph should you use to represent continuous data?

Bar chart Pie chart Histogram Line graph

5/7

Q6.Calculate the mean of the following values - 12, 13, 13, 14, 15, 15, 16 and 32.

14 16.25 98 130

6/7

Q7.What is the name of the gap between two neurones?

Dendron Cell body Axon Synapse

7/7

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Required Practical Reaction Time - Part B

The quiz will assess knowledge of the nervous system and evaluating a practical.

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Q1.Which of the below is an example of a systematic error?

Misreading the measurement on a ruler Dropping the ruler from different heights on each repeat A computer always records the timings 2 seconds too slow A student forgets to stop the timer

1/6

Q2.When we evaluate a method, it is important to always....

State a balanced argument with equal points for and against Only state good points about the method Only state bad points about the method

2/6

Q3.What does the term repeatable mean?

That if someone else were to follow the method they would record similar results That if someone else were to follow the method they would record very different results That if the same person were to follow the method they would record very different results That if the same person were to follow the method they would record similar results

3/6

Q4.Which of the methods below would obtain more reproducible results?

Ruler drop test Computer programme testing reaction time

4/6

Q5.In the ruler drop test, what is the name of the effector?

Adrenal gland Thyroid gland Arm muscles Hand muscles

5/6

Q6.Select the two ways we can reduce the impact of random errors during an investigation

Select two (2) boxes

Use a large sample size Use a small sample size Only repeat the experiment if there is an anomaly Repeat the experiment three times and take an average

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Required Practical Reaction Time - Part B

The quiz will assess knowledge of the nervous system and evaluating a practical.

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Q1.Which of the below is an example of a systematic error?

Misreading the measurement on a ruler Dropping the ruler from different heights on each repeat A computer always records the timings 2 seconds too slow A student forgets to stop the timer

1/6

Q2.When we evaluate a method, it is important to always....

State a balanced argument with equal points for and against Only state good points about the method Only state bad points about the method

2/6

Q3.What does the term repeatable mean?

3/6

Q4.Which of the methods below would obtain more reproducible results?

Ruler drop test Computer programme testing reaction time

4/6

Q5.In the ruler drop test, what is the name of the effector?

Adrenal gland Thyroid gland Arm muscles Hand muscles

5/6

Q6.Select the two ways we can reduce the impact of random errors during an investigation

Select two (2) boxes

Use a large sample size Use a small sample size Only repeat the experiment if there is an anomaly Repeat the experiment three times and take an average

6/6