292x Filetype PPTX File size 0.69 MB Source: pa01001022.schoolwires.net
OBJECTIVE
S
Identify planets by observing their
movement against background
stars.
Explain that the solar system
consists of many bodies held
together by gravity.
MAIN
IDEA
The solar system consists of the
planets, their moons, and many
other bodies orbiting the Sun.
VOCABULA
RY
planet
moon
solar system
inertia
asteroid
comet
meteoroid
meteor
meteorite
WHAT IS THE
SOLAR SYSTEM?
• Before telescopes were invented
people studied stars by looking
up at the night sky.
• People noticed the bright lights
in the sky changed.
• A solar system has stars like the
sun as well as moons and planets.
• All but 2 planets have one or
more than one moon.
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