A comet, is made from ice, dust and rock., A meteorite, reaches the ground on Earth., A meteor, burns up in Earth's atmosphere., The Earth orbits the Sun, in 365 days., The Earth spins on its axis, in 24 hours., A natural satellite of the Earth is, the Moon., An artificial satellite of the Earth is, the ISS (International Space Station)., The Asteroid Belt is located, between Mars and Jupiter., What galaxy is Earth located in?, The Milky Way., What is a galaxy?, A collection of billions of stars, gas, dust and planets., Name the four inner planets., Mercury, Venus, Earth and Mars., What does 'terrestrial planet' mean?, Planets made of rock., What are the gas giants?, The outer planets which are made of gas, namely Uranus, Neptune, Jupiter, Saturn., What force keeps the planets orbiting the Sun., Gravity., Venus is closer to the Sun than Mercury, but gets hotter. Why?, Its atmosphrere contains carbon dioxide, which traps heat, making it warmer., In which phase of the Moon is the part of the Moon seen from Earth in complete darkness?, The new Moon., What is the umbra?, During a Solar eclipse, the area on the Earth completely blocked by the Sun, so in darkness., In the winter, is the Sun higher or lower in the sky than in winter?, Lower

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