Astroname Interest Flashcards
What is the diff. Between a planet and a star?
A star is a body of reactive gass that is constantly going through nuclear fusion.
A planet contains solid liquids and gasses, does not have constant nuclear fusion
Name the planets in order and there rough distance.
Mercury 58 mill km
Venus 108.2 mill km
Earth 149.6 mill km
Mars 227.9 mill km
Jupiter 778.5 mill km
Saturn 1.434 Bill km
Uranus 2.871 Bill km
Neptune 4.495 Bill km
What is the goldiolcks zone
The inhabitable distance round a star
How do the planets move around the sun
In a relatively circular orbit around the sun. Based on its gravitational pole
Define an eclipse
It is when a planet, moon or other Lage body in space obscures the sun from reaching the earth or other planet
What is the speed of light?
299 792 458 m/s
300 000 km/s
How does knowing the speed of light enable us to specify interstellar distances
It helps us with a standard measurement so we can communicate more specifically about distances
How long does it take for light from the sun to reach the earth.
8 min
How close is the closest star to the sun?
4.24 light years
What are the phases of the moon?
First quarter (half lit)
Waxing crescent (right quarter lit)
New moon (all black)
Waning crescent (left quarter lit)
Last quarter (left half lit)
Waning gibbus (right quarter dark)
Full moon (completely lit)
Waxing gibbous (left quarter dark)
Star constellations
Aries
Southern cross
Orion’s belt
Taurus
Leo
Virgo
Sagittarius
Capricorn
Gemini
Cancer
Libra
Scorpio
Aquarius
Pisces
2 ways of finding north using stars
Using southern cross look for longest space 4.5 lengths after that straight down is south
Using a the southern cross look for 2 long parts and the 2 pointer stars to see where they meet and straight down is south
Using orian look for the belt, then the sward. Straight below the sward is south
What is an intergalactic distance?
The distances between galaxy’s
How far and long is a light year?
One light year is 9 trillion km
In one earth year
3 galaxy’s other than the milky way
Andromeda
Large magellanic cloud
Small magellanic cloud