Download Devil physics The baddest class on campus IB Physics

DEVIL PHYSICS
THE BADDEST CLASS ON CAMPUS
IB PHYSICS
ASTROPHYSICS
TSOKOS OPTION E-1
INTRODUCTION TO THE UNIVERSE
IB Assessment Statements
 E.1.1. Outline the general structure of the
solar system.
 E.1.2. Distinguish between a stellar cluster
and a constellation.
 E.1.3. Define the light year.
 E.1.4. Compare the relative distances
between stars within a galaxy and between
galaxies, in terms of order of magnitude.
IB Assessment Statements
 E.1.5. Describe the apparent motion of the
stars/constellations over a period of a night
and over a period of a year, and explain these
observations in terms of the rotation and
revolution of the Earth.
Tsokos Objectives
 Describe the main features of the solar
system.
 Name the main objects making up the
universe.
 Give the definition of a light year.
 State the average distances between stars
and between galaxies.
 Outline the main facts about the motion of
stars as they appear to an observer on earth.
Order of Magnitude
 Relative Size of Celestial Bodies
Laws of Gravitation and
Planetary Motion
The Solar System
 OBJECTIVE: Describe the main features of
the solar system
The Solar System
The Solar System
Relative Orbit Radii
Relative Orbit Radii
Relative Orbits
Kepler’s Laws
 Tsokos 2-11
The motion of an object that is attracted and
bound to a heavier mass is, according to the law
of gravitation, an ellipse or circle.
2. Planets sweep out equal areas in equal times.
3. The period of a planet around the sun is
proportional to the 3/2 power of the orbit radius.
1.
Moons
Moons
Saturn
Pluto
Asteroid Belt
Characteristics of Planets
Characteristics of Planets
Characteristics of Planets
Objective
 Name the main objects making up the
universe
Beyond the Solar System
Beyond the Solar System
Objective
 Give the definition of a light year
Light Year
 The distance light will travel in one year
1ly  3x10 x365 x24 x60 x60
8
1ly  9.46 x10 m
15
Objective
 State the average distances between stars
and between galaxies
Parsec (pc)
 Represents the average distance between
stars in a galaxy
1 pc  3.26ly  3.09 x10 m
16
Objective
 Outline the main facts about the motion of
stars as they appear to an observer on earth
Motion of the Stars
Motion of the Stars
Motion of the Stars
Motion of the Stars
Tsokos Objectives
 Describe the main features of the solar
system.
 Name the main objects making up the
universe.
 Give the definition of a light year.
 State the average distances between stars
and between galaxies.
 Outline the main facts about the motion of
stars as they appear to an observer on earth.
IB Assessment Statements
 E.1.1. Outline the general structure of the
solar system.
 E.1.2. Distinguish between a stellar cluster
and a constellation.
 E.1.3. Define the light year.
 E.1.4. Compare the relative distances
between stars within a galaxy and between
galaxies, in terms of order of magnitude.
IB Assessment Statements
 E.1.5. Describe the apparent motion of the
stars/constellations over a period of a night
and over a period of a year, and explain these
observations in terms of the rotation and
revolution of the Earth.
QUESTIONS?
Homework
#1-17