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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

Properties of Electromagnetic Waves Flashcards

All 5 cards in this deck

Are electromagnetic waves transverse or longitudinal?: Transverse — all of them.
e.g. x-rays and microwaves are both transverse waves.
Which property is the same for all electromagnetic waves travelling in a vacuum?: Speed.
e.g. x-rays and microwaves always have the same speed in a vacuum.
What do all electromagnetic waves transfer from a source to an observer?: Energy.
e.g. a fire mostly emits infrared, which transfers thermal energy to a person's hands.
True or false? All electromagnetic waves have the same frequency and wavelength in a vacuum.: False. Only the speed is the same for all EM waves in a vacuum; frequency and wavelength are different for each group.
True or false? Electromagnetic waves need a medium to travel through.: False. All electromagnetic waves can travel through a vacuum, at the same speed.