Flashcards
Electromagnetic spectrum
Flashcards do conjunto (9)
- 1What is the unit of frequency ?H
- 2Which part of the electromagnetic spectrum transfers the most energy ?Gamma rays
- 3Which have the longer wavelengths , microwaves or radio waves ?Radio waves
- 4How are radio waves produced ?By applying an alternative voltage to an aerial
- 5What happens to the wavelength if a wave source is moving away from you ?the observed wavelength increases
- 6Which galaxies are moving fastest ?The most distant ones
- 7How does red-shift show that the universe is expanding ?The furthest galaxies are moving the fastest so everything is expanding outwards
- 8What is the Big Bang theory ?The theory that the universe began with a massive explosion from a small initial point
- 9What happens to the wavelength of radiation as it changes from gamma to microwaves ?The wavelength increases
Informações
- Descrição
- GCSE Physics FlashCards sobre Electromagnetic spectrum, criado por nadine pownall em 23-05-2016.
- Criado por
- nadine pownall
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