Chapter 10.1 Flashcards
Celestial bodies
All the objects in the sky: sun, moon, planets, stars and …
Astronomers
People who study space
Edwin Hubble
Astronomer who had the idea that the galaxy was expanding in all directions
Used red shift analysis
Electromagnetic radiation
Energy which travels in waves
Energy determined by wavelength
Long wavelength = low energy
Short wavelength = high energy
Spectrum
Pattern made from visible light
Each colour = a specific wavelength
Spectroscope
Separates white light into colours
Red shift
The light’s wavelengths become longer and this shows that the object is going away from us.
Big Bang Theory
13.7 billion years ago an unimaginably tiny volume of space suddenly and rapidly expanded to immense size.
In this extremely short time, all the matter and energy in the universe was made.
Microwave radiation
Low energy Part of the electromagnetic spectrum
