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Sun, Moon, and Earth

Satellite A body that orbits a planet
Planet A celestial body moving in an orbit
Meteor A streak of light produced when a small object burns up entering Earth's atmosphere
Comet A cold mixture of dust and ice that that gives up a long trail of light as it approaches the sun
Star A giant ball of hot gas, mainly composed or hydrogen and helium
Constellation A pattern or group of stars that people imaged to represent figure, animal, or object
Axis The imaginary line that passes through Earth's center and the North and South poles
Rotation The spinning of Earth on its axis
Revolution The movement of one object around another
Orbit A slightly elongated circle, or ellipse
Calendar A system of organized time that defines the beginning, length, and divisions of a year
Solstice When the sun appears farthest north of the equator once each year and the farthest south once a year
Equinox When the sun is directly over head at the equator, rises due east, and and sets due west.
Force Push or Pull
Gravity Attracts all objects together
Law of Universal Gravitation Every object in the universe attracts to every other object
Mass The amount of matter in an object
Weight Measure of the force of gravity
Interia The tendency of an object to resist a change in motion
Newton's First Law of Motion The 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
Phase The different shapes of the moon you see from Earth
Eclipse When an object comes between the sun and a third object
Solar Eclipse when the moon passes directly between earth and the sun.
Umbra Darkest part of the moon
Penumbra Larger part of the shadow
Lunar Eclipse when the moon is at a full moon and earth is directly between the moon and sun
Tide The ruse and fall of ocean water that occurs every 12.5 hours or so
Spring Tide A tide with the greatest difference between low and high tides.
Neap Tide A tide with the least difference between low and high tides
Maria Dark flat areas
Crater Large round pits
Meteoroid Chunks of rock or dust from space.
Created by: mcdowell_jenna