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Transcript
The Solar System
Module A Chapter 2
Grade 4
The Sun
Center of the universe
Has the greatest mass
Largest, brightest and hottest object in the solar
system
Key Terms
 Meteorites: chunks of rocks from outer space.
 Meteors: chunks of rock that burn up brightly
as they fall through the Earth’s atmospheres
 Comets: icy balls of frozen gas and dust
 Oort Cloud: clouds of comets
The Inner Planets
 Mercury
 Venus
 Earth
 Mars
Inner Planet
Earth
Orbits around
The sun
The Earth is an
inner planet
It is an inner planet
Because of how
close it is to
the sun
The Inner Planets
Mercury
Closest planet
to the sun
Covered by dust
Craters on it
formed
by meteorites
The Inner Planets
Venus
Has a thick
atmosphere
Surrounded
by
clouds
Surrounded by
Carbon dioxide
and
acid
The Inner Planets
Mars
Looks reddish
You may find
water here
Nights are
colder than
the days
Atmosphere is
mostly carbon
dioxide
The Outer Planets
Jupiter
Saturn
Uranus
Neptune
Pluto
Outer Planets
Jupiter
Largest planet
Made of layers of
liquid hydrogen
and helium
Rings of dust
And ice
Creates more
heat than it
receives
Cold planet
Outer Planets
Saturn
Almost as
large as
Jupiter.
Famous for its
rings.
Cold planet
The Outer Planets
Uranus
and
Neptune
Blue-green
planets
Very cold
Very far from
the sun
Pluto
The smallest Farthest from
The sun
planet
Ninth planet
from
The sun
Review Questions
 The rings of Saturn, are caused by
_______ and ______ that spin around the
equator of the planet.
snow and sleet?
Pickles and ice cream?
Dust and ice?
Dust and Ice
What causes Mars to appear
reddish?
 Rusty Iron
 Red paint
 clouds
Rusty Iron
What is a meteor?
 A star that burns brightly
 An inner planet
 Chunks of rock that falls through the Earth’s
atmosphere
Chunks of rock that burn
brightly as they fall through
Earth’s atmosphere.
Which is the largest planet?
 Earth
 Jupiter
 Mars
Jupiter
Chunks of rock from outer space
that reach Earth’s surface are:
 Neptune
 Oort Cloud
 Meteorites
Meteorites!
Comets called _______________
may surround the solar system.
Oort Cloud
Jupiter
Peanut Butter
Oort Cloud
Connecting Idea
Inner Planets
Mercury
Venus
Earth
Mars
Outer Planets
Jupiter
Saturn
Uranus
Neptune
Pluto