Comets and Meteors-Topic 2 0.0 / 5 ? AstronomyPlanetary SystemsGCSEAQA Created by: eve_hooperCreated on: 05-11-16 16:22 What is the difference between the orbit of comets and plants? Comets have vary elliptical orbits as planets orbits are only slightly elliptical. 1 of 19 Where is the Kuiper Belt and what is its nature? It is located beyond Neptune and is like the asteroid belt. 2 of 19 Where is the oort cloud located? Around 100 AU away from the sun 3 of 19 Where do long and short period comets com from? Short: Kuiper Belt, Long: Theoretical oort cloud 4 of 19 When do the tails of comets from? When close to the sun 5 of 19 What are the 2 tails called? Ion tail and dust tail 6 of 19 Which way do the 2 tails point? Ion tail point away from the sun and the dust tail follows the curve of the orbital path. 7 of 19 What causes the 2 tails to form? Solar wind 8 of 19 What are meteoroids? Objects floating around the solar system 9 of 19 Where are meteoroids origins? Impacts on mars and the moon, collisions between asteroids, dust tails of comets. 10 of 19 What are meteors? 'Shooting stars'-meteoroids burning up in Earth's atmosphere. 11 of 19 When are meteors fireballs? If they have a magnitude greater than -3. 12 of 19 What are Meteorites? Meteorites that don't fully burn up and collide with Earth. 13 of 19 What causes meteor showers? The Earth travelling through the wake of a comet. 14 of 19 What is the point called where the meteors appear to all be coming from? Point of radience 15 of 19 What does PHO stand for? Potentially Hazardous object 16 of 19 Where do PHOs orbit? Less than 7.5 million km from Earth 17 of 19 Why do we have to monitor PHOs? May cause a Tsunami if they land in the ocean or major destruction and deaths if on land. 18 of 19 Evidence of impacts between bodies in the solar system. Craters of the moon and Earth and other planets. Uranus' axis tilt is believed to be due to a collision with an asteroid. 19 of 19
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