TFA Science Flashcards
Cosmology
The science of the origin and development of the universe
Universe
Everything in space considered as a whole
Big Bang Theory
A theory on how the universe began
Emission Spectrum
A spectrum of the electromagnetic radiation emitted by a source
Apparatus
A piece of equipment used for recording and measuring spectra
Wavelength
Distance between the crests of the wave
Frequency
The number of waves that pass a point in space
Expansion
The action of becoming larger or more extensive
Contraction
The process of becoming smaller
Galaxy
A system of a lot of stars and planets
Interstellar Cloud
An accumulation of gas
Red Shift
The displacement of spectral lines toward longer wavelengths
Blue Shift
The displacement of the spectrum to shorter wavelengths in the light coming from a distance
Doppler Effect
An increase or decrease in the frequency of sound, light, or any other waves
Newton’s Law of Universal Gravitation
When any particle attracts with any other particle in the universe with force.
Plasma
The colorless fluid part of blood
Solar System
8 planets the sun and the moon
Absorption Spectrum
A spectrum of electromagnetic radiation transmitted through a substance
Solar Nebula
A large cloud of gas and dust from which the sun, planets, and other solar system bodies formed.
Gravity
The force that attracts a body toward the center of the earth
Star
A fixed luminous point in the night sky which is a large
Infrared light
An electromagnetic radiation with wavelengths longer than those of visible light
Visible Light
The portion of the electromagnetic spectrum that is visible to the human eye
Ultraviolet Light
A radiation with wavelength from 10 nm to 400 nm
