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Astronomy

Description

Some definitions and details of astronomy.

Flashcards by Caitlin Yao, updated more than 1 year ago

	Created by Caitlin Yao over 6 years ago

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Resource summary

Question	Answer
The size of gravitational force depends on...	1. The masses of the two objects 2. The distance between the masses
What are asteroids?	Minor planets or rocks that orbit the sun Vary greatly in size Possibly the rocky remains of a plant that broke apart/failed to form.
What is gravitational field strength?	The strength of gravity on a planet/moon. On Earth: approximately 10N/kg On moon: 1.6N/kg
What are moons?	Natural objects that orbit around a planet. Non-luminous objects Takes 29.5 days for the Moon to orbit around the Earth Some planets have 1 moon and some more than 1, some has none.
What are comets?	They orbit the Sun They are made of dust and ice Have elongated orbits

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