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In Course: GCSE Biology (AQA): Paper 2

AQA GCSE Biology: Required Practical - Reaction Time

This deck provides a comprehensive guide to the required practical investigating the effect of a factor on human reaction time. It covers the aim, variables, a standard method (e.g., the ruler drop test), potential errors, and how to analyse results.

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Deck Contents

20 Cards
Lesson#1
In this deck, we'll explore the AQA required practical for investigating human reaction time. Reaction time is the time it takes for you to respond to a stimulus. We'll cover the aim of the investigation, the variables you need to control, a common method called the ruler drop test, and how to make your results accurate and valid.
Quiz#2
What is the term for the time it takes to respond to a stimulus?

reaction time

Quiz#3
What is the main aim of the required practical on human reaction time?

to investigate the effect of a factor

Lesson#4
In any scientific investigation, we need to understand our variables. The independent variable is the one you change on purpose to see what effect it has. For example, you could investigate the effect of caffeine, so the independent variable would be whether the person has had a caffeinated drink or not. The dependent variable is the one you measure – in this case, it's the person's reaction time. Finally, control variables are all the things you must keep the same to ensure a fair test, such as using the same person, the same hand, and ensuring there are no distractions.
Quiz#5
In an experiment to see if drinking coffee affects reaction time, what is the independent variable?

caffeine

Quiz#6
In the required practical on reaction time, what is the dependent variable?

reaction time

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