Investigating reaction times (AQA GCSE Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
ShowHide
Practise the questions
12 questions from this quiz
What does reaction time measure?
What does reaction time measure?
How quickly nervous system responds
What is the most common method for measuring reaction times?
What is the most common method for measuring reaction times?
Ruler drop test
If you are right-handed, which hand should you use for the ruler drop test?
If you are right-handed, which hand should you use for the ruler drop test?
Left hand (weaker hand)
Where should the 0cm mark be positioned when starting the test?
Where should the 0cm mark be positioned when starting the test?
Level with top of your thumb
Where should you focus your eyes during the ruler drop test?
Where should you focus your eyes during the ruler drop test?
Straight ahead across the lab
How many times should each person repeat the ruler drop test?
How many times should each person repeat the ruler drop test?
2-5 times
What is the formula for calculating reaction time in ms from cm?
What is the formula for calculating reaction time in ms from cm?
If the ruler falls 7.5 cm, what is the reaction time (to 2 s.f.)?
If the ruler falls 7.5 cm, what is the reaction time (to 2 s.f.)?
390 ms
How many significant figures should reaction time answers be rounded to?
How many significant figures should reaction time answers be rounded to?
2 significant figures
What typically happens to reaction times with practice?
What typically happens to reaction times with practice?
They get faster then level off
Why should you avoid doing practice runs before starting the investigation?
Why should you avoid doing practice runs before starting the investigation?
Practice is the variable being measured
What should go on the vertical axis of the bar chart?
What should go on the vertical axis of the bar chart?
Reaction time