Download 1.1 Organization of the Universe

Organization of the Universe

Darnell wants to see if flies like honey or
vinegar more. He puts out two bowls: one
of honey, one of vinegar. Then, he counts
how many flies land on each bowl.
 What
is the independent variable?
 What is the dependent variable?
 What is one constant?
Write in complete sentences!
Don’t talk during the Catalyst!
Objectives
By the end of today, all SWBAT…
 Describe the organization of the
solar system
 Illustrate how planets move
around the Sun
 Define how orbit size impacts
year length
Agenda
Catalyst review
 Homework review
 Organization of the universe

Heliocentric
model
Revolution

Exit Question
From smallest to largest
Key Point #1: The universe has many
levels of organization
 Planet:
mass that orbits a star
 Solar system: Many planets that orbit the
same star
 Galaxy: Many solar systems together
 Milky
Way
 Universe:
all matter that exists in space
Planets
Solar system
8 planets in our solar system
 Mercury
 Venus
 Earth
 Mars
 Jupiter
 Saturn
 Uranus
 Neptune
Galaxy
Universe
Who Am I????
Planet, Solar
system, Galaxy
or Universe
Universe, Galaxy, Solar system or
Planet??
9 planets that rotate
around the Sun
Universe, Galaxy, Solar system or
Planet??
All matter that exists in
space
Universe, Galaxy, Solar system or
Planet??
Universe, Galaxy, Solar system or Planet?
Milky Way
Universe, Galaxy, Solar system or
Planet??
Universe, Galaxy, Solar system or
Planet??
Universe, Galaxy, Solar system or
Planet??
More than one
planet orbiting a
star
Universe, Galaxy, Solar system or
Planet??
Largest level of
organization in space
Universe, Galaxy, Solar system or
Planet??
Large than a planet,
but smaller than a
galaxy
Heliocentric? What that is?
Key Point #2: In our solar
system, all planets rotate
around the Sun in an ellipse
Called
Helio
the heliocentric model
=
Centric=
Complete the
classwork
worksheet
1A. From the reading on the following page, answer these questions:
1.What is a theory?
2.What was the theory proposed before the heliocentric model? What did this theory state?
3.What evidence supported the geocentric model?
4.Who disproved the geocentric model? What was the evidence?
1B. Illustrate the geocentric theory
1C. Illustrate the heliocentric theory
1D. In words, compare and contrast the heliocentric and geocentric models

Key point #3: One year is determined
by one complete orbit (or revolution)
around the Sun
 Farther
away from Sun = longer year
 Closer away from Sun = shorter year
1.
2.
3.
4.
Which planet in the solar system has the longest
year length?
Which planet in the solar system has the shortest
year length?
Mars has a longer year than Earth. Explain why
this is so.
What would happen to Earth’s year length if it
gradually starting moving away from the Sun?
Homework
Homework
Exit Questions
1.
2.
3.
Order these vocabulary words from largest to
smallest: solar system, universe, galaxy, planet
What is the difference between the geocentric
and the heliocentric model? Which one is
correct?
What would happen to the length of Earth’s
year if Earth’s orbit got LARGER? Explain
why.
Write in complete sentences!
Don’t talk during the Exit Question!