Science test Solar Systems Flashcards
The sun it’s nine planets and all the other objects that orbit the sun
Solar system
————— is space are so vast they require different units of measurement called astronomical units
Distance
An______ ____ is about 150 kilometers the mean distance from the earth to the sun
Inner planets are ——— with minerals similar to these on earth
—————— the second smallest planet, and the closest to the sun
Mercury
Mercury has a heavily —————— surface
Cratered
Mercury has little atmosphere, resulting in extremes of ——————
Heat
Second closest planet to the sun
Venus
Has a thick ————— layer
Cloud
Cloud trap, ———— ———— making the planet extremely hot about 4700°C
Solar energy
The third planet from the sun is
Earth
Earth ————- allows life to flourish
Atmosphere
Earths——————— exist as solid liquid and gas
Water 💦
Forth planet from the sun is
Mars
Mars has Seasons and polar ———— ————
Ice caps
May have —————shaping it surf
Water
The ——————— ———— separates the inner and Outer planets
Asteroid belt
Outer planets are mostly big balls of ———
Gas
The largest planet in the fifth planet from the sun is
Jupiter
Jupiter has —— moons
63
Great red spot is a giant —————————on the planet surface
Huricane
The sixth planet from the sun is
Saturn
Saturn has at least ————-moons
31
Saturn has several broad rings of ice and ————
Rock
Seventh planet from the sun is
Uranus
Axis makes planet spin nearly —— ——— ————
On its side
Has rings and at least —— moons
24
The eight planet from the sun is
Neptune
A gas planet with rings and at least ——moons
14
——————— is in it’s atmosphere and Gives the planet a blue color
Methane
Smallest planet and farthest from the sun
Pluto
Pluto has a rocky and ——— crust
Icey
Pluto only has ——— moon
One
Large body of frozen ice and rock that travels to the center of the solar system
Comet
Fragments of space material that lands on earths surface pieces may be iron rock or both
Meterorite
Age of the solar system
4.5 billions years
Group of stars that form a pattern in the sky
Constellation
A star has a ———— ————— that depends on it size
Life cycle
Small stars shine ——————— that larger stars
Longer
Group of stares dust and gas held together by gravity
Galexy
Most common galexy
Elliptical
Galaxy’s look like a pinwheel
Spiral
Smaller and less common than other galaxy’s
Irregular
