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Combined Science: Physics

GCSE · Edexcel · foundation

QuestionsFlashcards

Expressing Quantities & SI Units
- Units & Prefixes
  8
- Conversions & Standard Form
  6

Atomic Structure
Radioactive Decay
Dangers of Radiation
- Dangers of Radiation
  5
- Contamination & Irradiation
  6

Magnetism
Electromagnetism & The Motor Effect
- Magnetic Fields in Wires
  6
- Magnetic Fields in Solenoids
  6

Transformers & the National Grid
- The National Grid
  5
- The Ideal Transformer Equation
  3

Measuring Reaction Time Flashcards

All 5 cards in this deck

Describe the ruler drop test for measuring reaction time.: One person drops a ruler between another person's open fingers; the second person catches it as fast as they can and the distance the ruler fell is measured (and converted to a time).
What is a typical human reaction time?: About 0.2–0.9 s.
Other than the ruler drop test, give one method of measuring human reaction time.: A computer-based test: the person clicks the mouse or presses a key as soon as a shape or colour appears on screen.
What is an anomalous result in a set of repeated measurements, and what do you do with it?: A result that does not fit the pattern (much larger or smaller than the others); leave it out when calculating the mean.
In the ruler drop test, how does the distance the ruler falls relate to the reaction time?: The further the ruler falls before it is caught, the longer the reaction time.