Transcript Document

Homework 3 due Thursday 17th or Tuesday 22nd
Study Area
Felmley Hall 203
Lab Samples
Practice Lab Exam
The Universe
and
Solar System
Reigning Theory of the
Formation of the Universe
Big Bang
Four Forces of Nature
1.Gravity
2. Strong
3. Weak
4. Electromagnetic
The Milky Way Galaxy
The Milky Way Galaxy
Earth
Origin of the Solar System
Nebular Theory
Swirling Cloud of Star Dust
Rotating Cloud Flattens into a Disk
Condensation and Accretion
Once a protostar has
become a hydrogenburning star, a strong
stellar wind forms,
usually along the axis
of rotation. Thus,
many young stars
have a bipolar outflow,
a flow of gas out the
poles of the star. This
is a feature which is
easily seen by radio
telescopes. This early
phase in the life of a
star is called the TTauri phase.
Our Solar System
Rocky
Planets
Gaseous Planets
Planetary Differentiation
During the time of partial melting, all the terrestrial
planets separated into three layers of differing
physical and chemical composition.
• Crust - outer layer
• Mantle - middle layer
• Core - center
Uniqueness of Earth
Uniqueness of Earth
Water in 3 phases – Hydrosphere
Solid
Liquid
gas
Uniqueness of Earth
Biosphere
plants and animals
Uniqueness of Earth
Plate Tectonics - crust, mantle, and core
are in motion
Why are there so few impact
craters visible on Earth?
Earth System Science
The Earth can be divided into individual
parts (systems) to be studied, but it is
recognized that each part interacts with many
other parts.
The boundaries of a system can be
defined however you want.
Systems are defined by how energy and
matter cross the boundaries.
3 Types of Systems
Isolated - no mass
Closed
Open
transfer
- no energy
transfer
- no mass
transfer
- energy
transfer
- mass
transfer
- energy
transfer
Types of Systems
Doesn't Exist
The Earth
(almost)
The Atmosphere
Earth's Major Subsystems - the 4 spheres
Biosphere
Lithosphere
Hydrosphere
Atmosphere
Major Earth Cycles
•
Energy and matter are exchanged between cycles
Water Cycle
Tectonic Cycle
Tectonic Cycle