Science Vocab Astrology Quiz

Universe

Everything ever,including all of space and time

Galaxy

A system of millions or billions of stars, along with gas and dust, held together by gravitational attraction

Milky Way

the galaxy we live in

Solar System

a set of space objects that includes a star and everything that orbits that star

Planet

large object that circles around the sun or any other star

Terrestrial Planets

rockey planets,smallest in SS ( Mercury,Venus,Earth, and Mars)

Gas Giants

made of gas and dust, largest in SS (jupiter and saturn)

Ice Giants

made of gas but less than gas giants, bigger then terrestial planets.

Moon

a object thats natural and moves around another object thats natural

Meteoroids

objects in space that range from dust grains to small astroids. (space rocks)

Meteors

a meteroid that enters earths atmosphere at a high speed and then burns up. (shooting stars)

Meteorite

a meteriod that survives a trip through the atmosphere and hits the ground

Astroid

A rocky object that orbits the sun and has an average size between a meteoroid and a planet.

Comet

a rock thats icy and lets off dust and and gas as it flies through space (haleys)

star

any massive self-luminous celestial body of gas that shines by radiation derived from its interenal energy source and is held in a ball by its on gravity

sun

the star in the middle of our solar system

Constellation

a group of stars in the sky that form specific patterns from where you see them

Order of solar system

MVEMJSUN

Big Bang

When a small atom exploded in the middle of space creating the universe and everything ever.

Equinox

When day and night is equal (spring and fall)

Solstice

winter is longest night summer is longest day.

How planets stay in orbit

gravitational pull from the sun/star. The planet it moving straight but being pulled back.

What cause earths seasons

when a planet is faced towards the sun vs. away from the sun

Earths Axis

a straight line through the middle of earth that is tilted. Spins around the axis.

Rotate

when planets spin around there axis and move.

Revolve

When planets revolve in a oval shape around the sun.