The planetry system around the Sun, of which the Earth is part
1 of 14
Planets
Large sphere of gas or rock orbiting a star
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Astroids
Small object in orbit in the solar system
3 of 14
Comets
Lump of rock and ice in a highly elongated orbit around the Sun
4 of 14
Light- years
The distance travelled by light in 1 year
5 of 14
Radiation
Energy transfer by electromagnetic waves or fast-moving particles
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Parallax
Angle between two imaginary lines from two different observation points on Earth to an object such as a star or planet, used to measure the distance to that object
7 of 14
Supernova
Explosion of a large star at the end of it's life
8 of 14
Redshift
The shift of lines in a spectrum towards the red ( longer wavelength) end, due to the motion of the source away from us
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Big Bang Theory
The theoretical beginning of the Universe, when energy and matter expanded outwards from a point
10 of 14
Sedimentation
The settling of particles in water to the bottom
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Seafloor Spreading
an extension of the seafloor caused by tectonic plate movement and the extrusion of magma between two plates which solidifies to form rock
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Oceanic Ridges
Undersea mountain range formed by seafloor spreading and caused by the escape and solification of magma where tectonic plates meet
13 of 14
Tectonic Plates
Section of Earth's crust that slowly moves relative to other plates
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Other cards in this set
Card 2
Front
Large sphere of gas or rock orbiting a star
Back
Planets
Card 3
Front
Small object in orbit in the solar system
Back
Card 4
Front
Lump of rock and ice in a highly elongated orbit around the Sun
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