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28 terms

Earth, Moon, & Sun

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Astronomy
The study of the moon, stars, and other objects in space
Rotation
The spinining of Earth on its axis
Axis
The imaginary line that passes through Earth's center and the North and South pole
Orbit
A path
Revolution
The movement of one object around another
Calendar
A system of organizing time that defines the beginning, length, and divisions of year
Soltice
The day when the sun is fartherest north or south of the equator
Equinox
When the Earth is titled neither hemisphere is tilted or away from the sun/means "equal nights"
Phases
The different shapes of the moon you see from Earth
Eclipse
The partial blocking or total blocking of one object in space by another
Solar Eclipse
When the moon passes directly between Earth and the sun, blocking sunlight from Earth
Lunar Eclipse
Earth blocks sunlight from reaching the moon
Tides
The rise and fall of ocean water that occurs every 12.5 hours or so
Spring Tide
The tide with the greatest difference between consecutive low and high tides
Neap Tide
the tide with the least difference between consecutive low and high tides
Telescope
A device built to observe distant objectws by making them appear closer
Craters
Large round pitts
Meteoroid
Chunks of rock or dust from space
Maria
Dark, flat areas on the moon's surface formed from huge ancient lava flows
Penumbra
The largest part of the moon's shadow that surrounds the darkest part
Umbra
The darkest part of the moon's shadow
Force
A push or pull
Gravity
A force that attracts all objects toward each other
Law of Universal Gravitation
The scientific law that states that every object in the universe attracts every other object
Mass
The amount of matter in an object
Weight
The force of gravity
Inertia
The tendency of an object to resist a change in motion
Newton's First Law of Motion
The scientific law that states that an object at rest will stay at rest and an object in motion will staty in motion with a constant speed and direction unless acted on by a force