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Sun, Moon, and Earth
Question | Answer |
---|---|
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. |