5.0 PAT review Flashcards
What is a Geocentric Model?
The idea that Earth is at the center of the solar system
thought of by Aristotle
What is a Heliocentric Model?
The idea that the Sun is the center of the solar system.
thought of by Nicolaus Copernicus
Ellipses
oval path of planets in our solar system
Light-Year
distance light travels in one year which can go beyond our solar system
Nebulae
large clouds of gas and dust floating in space
Interstellar Matter
the gas and dust located between the stars in a galaxy
Red Giant
a very large red star with little energy produced
Red Supergiant
a very large star of high luminosity, and much larger than a Red Giant
White Dwarf
a faint star of enormous density
Supernova
a star that explodes and becomes extremely luminous in the process
Constellations
a group of stars that forms a shape or pattern
Asteroids
large rocky objects that revolve around the sun
Comets
made up of dust + ice, When they are near the sun and heat up, they leave a visible trail of ice and gas.
Meteoroids
Small rocky or metallic objects travelling in space
Meteor
The trail of light emitted by a meteoroid as it travels through the earth’s atmosphere