Solar system Flashcards
(20 cards)
What is a day
When earth completes a full rotation around its axis
What is a year
One full revolution around the sun
What are the 8 planets in order
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune
What are the 4 terrestrial planets
The first 4
What are the 4 gaseous planets
The last 4
What is a satellite
A moon
Is it true that Bigger planets have more moons
Yes
What zone is the earth in
The goldilocks zone
What is an asteroid
Kinda like a little rock planet
What is a comet
Chunk of rock and ice
What is meteor
streak of light when a space rock enters the atmosphere and burns up
Meteorite
When a space rock doesn’t burn up in the atmosphere and lands on earth
Where does the sun rise and set
rises in east sets in west
What is the geocentric view
Says earth is center of universe
What is heliocentric view
Says sun is center
Who made the heliocentric theory
Copernicus
Who helped prove Copernicus’s theory
Galileo Galilei
Who used the theory of gravity to explain how the Moon is held in orbit around the Earth
Sir Isaac Newton
Who was Edwin Hubble
American astronomer
Proved universe is expanding
Hubble Space telescope named in his honor, launched 1990
Who was famous for creating the most magnifying telescope of there time
