Science - Our Solar System Flashcards
Astronomical Unit (AU)
Is earths average distance from the sun, nearly 150 million km.
Dwarf planets
Dwarf planets orbit the sun and are nearly spherical in shape, but they share their own orbital paths with other objects of similar size.
Planetesimals
Small pieces of ice and rock that orbit the sun and form bodies of ice and rock
Satellite
Is an object that orbits a larger object other than a star
The sun
Has an enormous gravitational pull,making everything around it revolve
Asteroids
Small, rocky, or metallic objects that are remnants from the solar system
Planet
Orbits the sun, is large enough to be nearly spherical in shape,and has no other large object in its orbital path.
Inner planets
Mercury, Venus, Earth, and Mars
Outer planets
Earths moon,Eris,Pluto,Ceres
Meteoroid
A Solor system object that is smaller than an asteroid or comet
Meteor
Is the streak of light that meteoroid makes when coming
Basic needs of life
Matter, source of energy,water,nutrients
Life on mars?
Liquid water,pressure, temperature
Sputnik
The first human made satellite,orbited earth in 1957,humans have launched thousands of satellites into orbit around earth
Astrobiology
The study of the origin,development,distribution
Lander
Travel to a distant space object and land on the surface
Artificial satellite
Any human-made object placed in orbit around a body in space
Space probe
Travel to one or more distant space objects and fly without orbiting or landing
Orbiter
Placed into orbit around the object
Flyby
To fly by without orbiting or landing
Rocket
A vehicle propelled by the exhaust made from burning fuel
