Download The Solar System

The Solar System
What is the Solar System?
• The Solar System is made up of the sun,
the planets, their moons, asteroids, and
comets.
Order of Planets
Order of Planets
Solar System Vocabulary
• Solar System: The sun together with the eight planets and all other
celestial bodies that orbit the sun.
• Outer Planets: Any of the four planets, Jupiter, Saturn, Uranus,
Neptune, with orbits outside that of Mars.
• Inner Planets: Any of the four planets, Mercury, Venus, Earth, and
Mars, whose orbits are closest to the sun.
• Telescope: An arrangement of lenses or mirrors or both that allows
the observation of distant objects
• Axis A straight line about which a body or geometric object rotates or
may be conceived to rotate.
• Planet A celestial body larger than an asteroid or comet, illuminated
by light from a star, such as the sun, around which it revolves
Solar System Vocabulary
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Orbit: The path of a celestial body or an artificial satellite as it
revolves around another body.
Rotation: The act or process of turning around a center or an
axis: the axial rotation of the earth.
Star: A self-luminous celestial body consisting of a mass of
gas held together by its own gravity.
Constellation A formation of stars perceived as a figure or
design.
Planet Scale
• http://science.nationalgeographic.com/scie
nce/space/solar-system
How big is outerspace?
• YouTube - Bill Nye The Science Guy on
Outerspace (Full Clip)
The Sun
• The sun is a star.
• It is at the center of our
Solar System.
• The eight planets orbit
around the sun.
• It is made up of swirling
gases and nuclear
reactions.
• The sun provides the
Earth with heat and light.
• The sun is very, very hot.
Stars in the night sky
• Constellations
• http://youtu.be/I7m61DnPqvE
How is the Solar System made
Up?
• The Solar System is made up of:
– the inner planets
• Mercury, Venus, Earth, & Mars
– The asteroid belt
• Thousands of asteroids are in this belt. Asteroids
are rocks that orbit around the sun.
– The outer planets
• Jupiter, Saturn, Uranus, Neptune
– Comets are also part of the Solar System.
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The Solar System is made up of:
the inner planets
Mercury, Venus, Earth, & Mars
There are four inner planets
They are small
They are solid
They have no more than two moons
The closer the planets are to the sun the
faster they revolve
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Outer Planets
Jupiter, Saturn, Uranus, Neptune
No surface, because they are made of
gasses
There are four outer planets
The biggest outer planet is Jupiter
All of the outer planets have rings
What is a planet?
A planet is a body which revolves around a sun. It
has no light of its own, but reflects the light of the sun.
It is in orbit around the sun. Our Solar System
contains 8 planets.
Mercury
Saturn
Venus
Uranus
Earth
Neptune
Mars
Jupiter
Bill Nye Gravity
• http://youtu.be/6f6maa9xPDM
How far are the planets of our solar
system apart?
• http://youtu.be/97Ob0xR0Ut8
Technology
• How can we see the planets and the
stars?
• Space Ships
• Telescopes
• Satellites
Which one is the smallest?
Which one is the largest?
• Can you put these in
size order?
• Place the following in
order from largest to
smallest.
• Moon
• Sun
• Earth
Answer: Sun, Earth, then
moon
• The sun is the largest
• Next in size is the Earth.
• The moon is smaller than the
Earth.
The Earth:
• -is the third planet from the Sun,
• -rotates on its imaginary axis
counterclockwise every
• 24 hours or 1 day,
• -appears blue in space
because it is 70% water,
-revolves around the sun every
365 days or 1 year.
The seasons and the tilt of the
Earth
• http://youtu.be/DuiQvPLWziQ
Moon Phases
Which of these is the next
phase of the moon?
• New Moon --- Waxing Crescent --- ?
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F Full Moon
G Waning Crescent
H First Quarter
J Waxing Gibbous
The next major phase of the
moon would be…
• First quarter.
• The moon revolves around –F
–G
–H
–J
itself
the Earth
the sun
the solar system
The Moon
• The moon is a
satellite that revolves
around the Earth
• The moon revolves or
orbits the Earth once
every 29 days.
• We all ways see the
same side of the
moon because the
moon rotates and
revolves at about the
same speed.
Moon Phases Bill Nye
• http://youtu.be/Gl89fdJ7JUM
Rotation causes day & night.
• Rotation is the turning
or spinning of the
Earth in one place on
its imaginary axis.
• Rotation of the earth
on its axis causes day
& night. (answer A).
Which of these is caused by the
turning of the Earth?
–F
–G
–H
–J
Summer and winter
Stars
Day and night
Moon phases
The revolution of the Earth
around the Sun takes–A
–B
–C
–D
a day & night or 12 hours
a week or 7 days
a month or 29-31 days
a year or 365 days
The revolution of the Earth
around the sun
• Takes 365 days
• or one year.
• The Earth is a
satellite of the Sun
• NOTE:
• Due to the tilt of the
Earth’s axis during
revolution, the Earth
experiences seasons.