Our Solar System Flashcards
(26 cards)
Name the planets in order. Which is smallest and largest?
Mercury (smallest), Venus, Earth, Mars, Jupiter(largest), Saturn, Uranus, Neptune
_______ is a substance that cannot be decomposed into simpler substances by chemical reactions.
Elements
isotope has the same number of ______ and different number of _____.
Protons
Neutrons
Reaction where two elements with lighter nuclei combine with a single heavier nuclei. This process releases ___ that powers the sun and stars
Nuclear fusion
Energy
Satellite is a natural object or a space craft that _____ a larger astronomical body. A natural satellite is a _______.
Orbits
Moon
Moons of each planet
Mercury -0
Venus - 0
Earth - 1
Mars - 2
Jupiter 95
Saturn 146
Uranus 28
Neptune 16
Sasteroids are small bodies less than _____ km in diameter that orbit the _____. The asteroid belt: ____ shaped between ______ and ______. In the middle of the asteroid belt, the _______ planet, ______ , lies.
1000
Sun
Torus
Mars and Jupiter
Dwarf
Ceres
Belt on the outside of our solar system. Contains multiple dwarf planets: (5)
Kuiper belt
Pluto, Makémaké, haumea, Orous, Quaoar
Pluto is considered a dwarf planet because it shares its ________ ______ with the _______ _______. It does not hold a __________ dominance
Orbital zone
Kuiper Belt
Gravitational
Dwarf planet that revolves around the sun beyond the orbit of Pluto.
Éris
Planet revolves around a _____. Does not radiate its own internal energy from _______ _______. Larger than _______ km in diameter. Large enough to be _______ by its own gravity. And has its own __________ ______
Star
Nuclear fusion
1000
Rounded
Orbital zone
What makes up the inner solar system?
Terrestrial planets - inner planets and the asteroid belt
Mercury, Venus, Earth and Mars
What makes up the outer solar system?
Outer planets- gas giants
Jupiter, Saturn, Uranus and Neptune
Characteristics of terrestrial planets (5)
Solid and high density
Rocks and minerals
Don’t have rings
Made of cooled igneous rock
Iron filled core
Characteristics of gas Giants (3)
Lower density
Made up of gases primarily Helium and hydrogen
All have rings
Helium is a ________ resource. Radioactive decay of ______ and _______ igneous rocks produce helium
Non-renewable
Uranium
Thorium
Saturn rings are composed of _____ ____
Jupiter rings are composed of very small ______ _______
Uranus rings are composed of ______ _____
Neptune rings are composed of ______ and _________ ice
Water ice
Dust particles
Rock boulders
Methane CH4 and ammonia NH3
How old is Earth and when did it start forming?
4.54 billion years old
It began forming 4.6 billion years ago
Solar system formed from a dust cloud called ______ ______. Gravity caused “ “ to collapse spin and form a disk. This disk is called ________ _____.
Solar Nebula
Protoplanetary disk
Term for when heavier metals sink to the center of a planet and leaves the lighter ones at te surface
Planetary differentiation.
Theia, Greek god of ______, _______ and ______, it was names a proto planet that collided with ____________. Materials flew into the air and later created the ______ with _______.
Brilliance, vision and sight
Proto-earth
Moon
Gravity
Northwest communities: legend has it that a ______ stole the _____, ______, and the ____ from an old chief for everyone to share in the sky.
Raven
Sun, moon and stars
Earth’s diameter is ______, the moon travels in an ______ shape,. When closest to the Earth it is called the _______ and when the moon is farthest away, the ______.
12670 Km
Elliptical
Perigee
Apogee
The moon is moving away from the Earth at a rate of ______ per year. We can only see one ______ of the moon. Temperatures range from 127 to -173 degrees Celsius.
1 inch
Hemisphere
