Earth, Moon, & Sun

Created by WalkerMill 

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28 terms

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

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