Key Vocab about our Solar System
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Rotation | The spinning of the Earth on it's axis.
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| Orbit | A regular movement around an object, like the Earth around the Sun or the Moon around the Earth.
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| Revolution | The time it takes for a planet to make one complete orbit. Earth's revolution is one year.
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| Lunar Highlands | The mountainous areas of the Moon.
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| Maria | The smooth, dark regions on the surface of the Moon.
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| Elipse | When the Moon blocks sunlight travelling to Earth and creates a shadow.
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| Tides | The result of the Moon's gravitational pull on Earth - water is pulled towards the moon to create high tides.
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| Solar System | Planets that orbit a star.
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| Astronomical Unit | The measurement for huge distances in space - one AU is the distance from Earth to the Sun, or 150 million km!
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| Comet | A large body of ice and rock that travels around the Sun in an elliptical orbit, that sometimes have a tail of gas and dust.
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| Meteorite | Any fragments from space that fall to Earth.
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| Constellations | Groups of stars that form patterns in the sky.
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| Galaxy | Groups of billions of stars, gas and dust held together by gravity. Earth is in the galaxy, the Milky Way.
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| Supernova | An exploding star.
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| Light-year | The distance light can travel in one year - about 9.5 trillion km.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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