Download Chapter 19.3 Student Study Guide

Chapter 19.3
Student Study Guide
Key
Chapter 19.3
Describe how current
models of the solar system
differ from that of Aristotle or
Copernicus
Chapter 19.3
Describe how current
models of the solar system
differ from that of Aristotle or
Copernicus
• Aristotle believed in a geocentric
model. Copernicus proposed a
heliocentric model but believed the
planets orbited in perfect circles,
insted of elliptical orbits.
Chapter 19.3
Describe how current
models of the solar system
differ from that of Aristotle or
Copernicus
•From Aristotle
•Heliocentric today
•Not geocentric
Chapter 19.3
Describe how current
models of the solar system
differ from that of Aristotle or
Copernicus
•Elliptical orbits
•Not perfect circles
like Copernicus
Chapter 19.3
Describe how current
models of the solar system
differ from that of Aristotle or
Copernicus
• Aristotle believed in a geocentric
model. Copernicus proposed a
heliocentric model but believed the
planets orbited in perfect circles,
insted of elliptical orbits.
Chapter 19.3
Explain what the nebular
hypothesis is.
• Model for formation of the
solar system in which the
sun and planets condense
from a cloud of dust and gas
Chapter 19.3
Identify how long ago the
original cloud of dust and gas
started collapsing according to
the nebular hypothesis..
•4.6 Billion years
ago
Chapter 19.3
Describe three types of bodies
found in the solar system
besides asteroids, dwarf planets
and planets.
•Satellites, Comets
•Rocks
(Meteoroids)
Chapter 19.3
Describe the current theory of
how the Earth’s moons formed.
•Giant Impact
Hypothesis
Chapter 19.3
Describe the current theory of
how the Earth’s moons formed.
• While Earth was still in its molten
stage, it was struck by a Mars-sized
body. A large part of Earth’s mantle
was blasted into space and along with
debris from the impacting body formed
the moon.
Chapter 19.3
Complete the table to describe
different models of the solar
system that have been used.
1. Compare: Complete the table below
to describe different models of the solar system
that have been used throughout history.
Person
Time
Aristotle
330 BC
Aristarchus
Ptolemy
Aryabhata
Copernicus
270 BC
150 AD
499 AD
1543 AD
Kepler
1615 AD
Model
Geo or Helio
Shape of
Orbits
Not
considered
Heliocentric
Heliocentric
Perfect
Circles
Chapter 19.3
List the four types of objects that
are found in the solar system.
•Satellites
•Comets
•Asteroids
•Meteoroids
Chapter 19.3
List the four types of objects that
are found in the solar system.
•The Sun
•Planets
•Dwarf Planets
•KBOs
Chapter 19.3
What is the approximate age of
the solar system?
•4.6 Billion Years
Old
Chapter 19.3
State briefly how the objects in
our solar system formed
according to nebular theory?
•From a rotating
disc within a cloud
of dust and gas
Chapter 19.3
State briefly how the objects in
our solar system formed
according to nebular theory?
•From a rotating
disc within a cloud
of dust and gas
Chapter 19.3
Why are scientists more likely to
find large exoplanets than small
exoplanets?
• Easier to detect the
effect of mass on the
wobble of a distant
star.