Download Planet PowerPoint - Notes

Planets and Gravity
Presented by Kesler Science
Essential Questions:
1. Can you describe the physical
properties of planets and their
location?
2. Can you describe the movements
of the sun, the planets and the
Galilean moons?
Planets
Planet definition
A celestial body
moving in an elliptical
orbit around a star.
© KeslerScience.com
Planets
Some Characteristics
Include:
• Color
• Proximity to Sun
• Size
• Speed
• Density
• Physical/Chemical make up
© KeslerScience.com
Quick Action – Inner and Outer Planets INB
Template
INB Template
1. Cut out the planets
template.
2. Glue it to your journal
along the 2 skinny
tabs.
© KeslerScience.com
What are the
characteristics
of the Inner
Planets?
What are the
characteristics
of the Outer
Planets?
Planets
Inner Planets compared
to Outer Planets
• Mercury, Venus, Earth, Mars
• Closer together
• Terrestrial, rocky: Rocky
Planets
• More dense
• Smaller
• Shorter revolution
© KeslerScience.com
Planets
Outer Planets compared
to Inner Planets
• Jupiter, Saturn, Neptune, Uranus
• Farther apart
• Made up mostly of gas: Gas
Giants
• Less dense
• Larger
• Longer revolution
• Less known about them
© KeslerScience.com
Quick Action – Gravity INB Template
INB Template
1. Cut out the tides
template.
2. Glue it to your journal
along the 2 skinny
tabs.
© KeslerScience.com
What is
Gravity?
What is the
force that
governs all
planetary
movement
in the solar
system?
How does
the mass
of an
object
affect
gravity?
How does
the distance
between
two objects
affect the
force of
gravity?
Planets
Gravity – What is it?
A natural force of
attraction exerted by a
celestial body on objects
that are on or near its
surface. It keeps planets
and other objects in orbit.
© KeslerScience.com
Planets
Gravity – How does the mass
on an object affect gravity?
The greater the mass of
an object, the more
gravitational force is
exerted on other objects
around it.
© KeslerScience.com
Planets
Gravity – What is the force
that governs all planetary
movement in the solar system?
The Sun’s gravity is what
causes the planets to
orbit in our solar system.
© KeslerScience.com
Planets
Gravity – How does the
distance between two objects
affect the force of gravity?
The closer the two
objects are the more
gravitational force they
have.
Ex: The Moon has as much larger
impact on our tides than the Sun
does.
© KeslerScience.com
Check for Understanding
Write a short essay to answer the following
question.
Give two reasons why the Galilean moons
stay in orbit around Jupiter rather than
pulled toward Saturn or the Sun?
© KeslerScience.com
Quick Action – Planet INB Template
Sun (star) Mercury
© KeslerScience.com
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
Planets
How do planets move?
• Planets orbit (revolve)
clockwise around the
sun
• The Sun’s gravity keeps
them in their orbits.
• The planets orbits are
elliptical shaped.
© KeslerScience.com
Planets
Mercury
• Closest planet to the sun
• Smallest planet in solar
system
• 2nd hottest planet
• No atmosphere
• Revolution 88 Earth days
• Craters
© KeslerScience.com
Planets
Venus
• 2nd closest planet to the
Sun
• “Sister” to Earth in size
• Thick atmosphere
• Hottest planet because
of Greenhouse Effect
• Revolution 243 Earth days
© KeslerScience.com
Planets
Earth
• Our home
• Made of 2/3 water
• Only planet known to
support life
• Has a magnetosphere
which deflects harmful
electromagnetic rays
from the Sun
• Revolution 365 Earth days
© KeslerScience.com
Planets
Mars
• The “red planet”
• Grand Canyon of Mars
dwarfs Earth’s Grand
Canyon
• Largest dust storms
• Unmanned rovers
currently exploring Mars
• Revolution 687 Earth days
© KeslerScience.com
Planets
Jupiter
• Largest planet
• Great Red Spot can fit 2
Earth’s inside it.
• Galileo discovered many
of Jupiter’s moon’s.
• Ganymede is the largest
moon in the solar system.
• Revolution 12 Earth years
© KeslerScience.com
Planets
Saturn
• Many rings made of
dust and ice
• Low density – could
float in a bathtub if
one were big enough
• Revolution 29 Earth
years
© KeslerScience.com
Planets
Uranus
• Axis is sideways and
rotates north and south
• Thirteen sets of rings,
some partial
• Voyager 2 passed by
• Revolution 84 Earth
years
© KeslerScience.com
Planets
Neptune
• Smaller than Uranus
but greater mass
• Has a Great Dark Spot
similar to Jupiter's
Great Red Spot
• Voyager 2 passed by
• Revolution 165 Earth
years
© KeslerScience.com
Planets
Galilean Moons
Io
• Inner most moon to
Jupiter
• Highest Density
• Driest and most
geologically active
object in the solar
system
© KeslerScience.com
Planets
Galilean Moons
Europa
• Smallest of Galilean
Moons
• Smoothest surface of
any known solid object
in the solar system
© KeslerScience.com
Planets
Galilean Moons
Callisto
• Almost as big as
Mercury
• Same hemisphere
always faces Jupiter
• Heavily cratered
© KeslerScience.com
Planets
Galilean Moons
Ganymede
• Largest moon in the
solar system (8% larger
than Mercury)
• Underground ocean
and magnetic field
• First observed by
Galileo in 1610
© KeslerScience.com
Check for Understanding
Can I describe the physical
properties of the planets and
their location
Can I describe the movements
of the sun, the planets, and the
Galilean moons.
© KeslerScience.com