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Science ch.1 vocab

Astronomy- 1st 15 words

the study of the moon, stars, and other objects in space astronomy
an imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates axis
the spinning motion of a planet on its axis rotation
the movement of an object around another object revolution
the path of an object as it revolves around another object in space orbit
a system of organizing time that defines the beginning, length, and divisions of a year calendar
the two days of the year on which the sun reaches its greatest distance north or south of the equator solstice
the two days of the year on which neither hemisphere is tilted toward or away from the sun equinox
a push or pull exerted on an object force
the attractive force between objects; its strength depends on theie masses and the distance between them gravity
the scientific law that states that every object in the universe attracts every other object law of universal gravitation
the amount of matter in an object mass
the force of gravity on a object weight
the tendency of an object to resist a change in motion inertia
the scientific law that states that an object at rest will stay at rest and an object in motion will stay in motion with a constant speed and direction unless acted on by a force Newton's first law of motion
Created by: Schoolquiz