Physics GCSE
same speed in a vacuum
What same speed in a vacuum means in Physics GCSE, as defined for AQA.
Definition of same speed in a vacuum
Check what you remember
Read the wording for your board, then hide it and explain same speed in a vacuum in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
All electromagnetic waves travel at the same velocity through a vacuum or air, so ultraviolet and visible light from the Sun arrive together.
Topics that use same speed in a vacuum
- Types of electromagnetic waves (AQA GCSE)
Related terms
- continuous spectrum
- detectors
- energy stores
- energy transfer
- infrared
- long to short wavelength
- order of the spectrum
- red to violet
Using same speed in a vacuum in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Physics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Physics GCSE termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge