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Solar System

QuestionAnswer
Astronomy The study of celestial bodies
Celestial body Any naturally made objects outside of Earth’s atmosphere
Solar system Composed of the sun, planets, moons, comets, asteroids and other celestial body
Criteria to be a planet 1. Otbits a star 2. Has an almost round shape 3. Have cleared the region around its orbit or other celestial bodies
Comets Composed of ice, rock and dust
Famous comet Halleys comet which will next appear in 2062
Kuiper belt Where comets originate from Located beyond Neptune’s orbit Takes these comets 200 years or less to orbit the sun
Oort cloud Surrounds the outer limits of our solar system Contains trillions of long-period comets These take 200 to 30 million years to orbit the sun
Asteroids Small, rocky structures Located in the ‘Asteroid Belt’ which is located between Jupiter and Mars
Chicxulub Crater An asteroid that hit Earth
Meteor Small asteroid that hits Earth’s atmosphere
Asteroid that is 1000km in diameter Planetoids
Gravity Force Measured in Newtons (N)
Mass and Gravity The higher the mass of an object the higher its gravity Acceleration due to gravity on earth is 9.8m/s2
Mass The amount of matter within an object
Weight The pull of the earth on an object due to gravity
Calculating weight Mass of Object x Acceleration due to gravity = Weight
Created by: 23soph19
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