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ByG 1º ESO Unit 1. The universe and our planet ...
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Which planet lies on its side?
Uranus
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A group of stars and gas held together by gravity
A galaxy
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What is the hottest planet in the Solar System?
Venus
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One revolution of the Earth around the Sun takes .........
one year.
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Which theory said that the Earth was in the centre of the universe?
Geocentric theory
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The distance light travels in one year.
A light year
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Which planet rotates backwards compared to Earth? a) Uranus or B) Saturn?
a) Uranus
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The farthest planet from the sun is…
Neptune
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Name the 4 outer planets (farthest from the sun) and give a brief description.
Jupiter, Saturn, Uranus, and Neptune - gas giants, freezing temperatures, many moons, and ring systems
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What is the closest planet to the Sun?
Mercury
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The Moon is a ..................... of the Earth.
satellite
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Is this a star or a planet?
planet
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............ is the biggest planet.
Jupiter
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Does Mars have an atmosphere?
Yes
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______________________ is when the earth moves on its axis.
Rotation
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Stars, planets and satellites make groups called ........... .
Planetary systems
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Choose Inner Planets or Outer Planets: Which group of planets have a smaller diameter?
Inner Planets
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How do we call the plane in which the planets orbit the Sun?
The ecliptic.
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How many planets are there in our solar system?
8
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What do we call the imaginary line that goes from the North Pole to the South Pole?
axis
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What is the universe doing since its origin?
Expanding
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What are small icy objects that orbit the Sun?
Comets
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Planets give light. True or False
False. The planets do not give light.
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A large cloud of gas and dust in space, where stars are born.
A nebula
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What keeps Earth and other planets in their orbits around the Sun?
Gravity
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Which planets have solid surfaces, few moons and no rings?
Terrestrial planets
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The largest planet in the Solar System is…
Jupiter
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Name the 2 places where asteroids are located in the solar system.
Wide area between the orbits of Mars and Jupiter/ area past Pluto, know as the Kuiper Belt
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The Earth moves in an ellipse shape. This is called an ........... .
Orbit
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Which is the most famous dwarf planet?
Pluto
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What is the name of our galaxy?
The Milky Way
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Name the 4 inner planets (closest to the sun) and give a brief description.
Mercury, Venus, Earth, and Mars - small and rocky
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Name two dwarf planets
Pluto, Ceres, Eris...
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What do you call a scientist who studies outer space?
Astronomer
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Small mass of dust and ice that originates in an area beyond Pluto called the Oort cloud
comet
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How can the planets in our solar system be divided?
Terrestrial and Jovian
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