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33 terms

Science chap 2/3 CHS Grade 5

STUDY
PLAY
Geocentric Model
Ptolemy
Heliocentric Model
Copernicus
Inner Planets
Mercury, Venus, Earth, Mars
Outer Planets
Jupiter, Saturn, Uranus, Neptune
Big Bang Theory
a theory that explains how the universe was formed
terrestrial
earth like; rocky
satellite
a natural or man-made object that orbits another
How Stars are Classified
size, color, tempature, brightness
apparent magnitude
how far a star appears to be
absoulute magnitude
how far a star actually is
light year
unit of measurement for distances in space
Stages of the Life Cycle of a Star
high mass and low mass
3 types of galaxies
spiral, elliptical, irregular
Expanding Universe Theory
galaxies are moving farther away from each other
Compare and Contrast the Inner and Outer Planets
All of the planets: are apart of one galaxy, revolve around the Sun, don't produce light, and spin on it's axis
Planets differ because: inner planets are earth like and rocky while outer planets are gas giants and have rings
Compare and contrast a geocentric model of the solar system and a heliocentric model of the soar system.
Geocentric model: revolves around the Earth
Heliocentric model: revolves around the Sun
Both Heliocentric and Geocentric models have the same objects revolving around each other.
Nebula
huge clouds of gases and dust
protostar
pockets of matter that form the beginning of stars
developed stars
stops shrinking and begins to shine
red giant
outer layers expand and move farther from the core
supernova
exploding star
blackhole
very strong gravitational hold
neutron star
the star's remaining matter is crushed
white dwarf
last traces of fuel run out
black dwarf
dead star
Mercury
-terrestrial
-closest to the Sun
-has no atmosphere
Venus
-terrestrial
-named for Roman Goddess of beauty
-atmosphere is made up of carbon dioxide and sulfuric acid
Earth
-terrestrial
-only planet with animal and plant life
Mars
-terrestrial
-most resembles Earth
Jupiter
-gaseous
-largest planet
-large red spot called "The Storm"
Saturn
-gaseous
-spectacular rings (known for them)
Uranus
-gaseous
-axis is tilted way over on its side
Neptune
-gaseous
-swirling blue aand white features