Homework 3 due Thursday 17th or Tuesday 22nd

Practice Lab Exam

Lab Samples

Study AreaFelmley Hall 203

The Universe

and

Solar System

Reigning Theory of the

Formation of the Universe

Big Bang

Four Forces of Nature

1.Gravity2. Strong

3. Weak4. 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 hydrogen-burning 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 T-Tauri phase.

Our Solar System

RockyPlanets 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 EarthWater in 3 phases – Hydrosphere

Solid

Liquid

gas

Biosphereplants and animals

Uniqueness of Earth

Uniqueness of EarthPlate Tectonics - crust, mantle, and core

are in motion

Why are there so few impact craters visible on Earth?

Earth System ScienceThe 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 bedefined however you want.

Systems are defined by how energy andmatter cross the boundaries.

3 Types of Systems

Isolated - no mass transfer

- no energy transfer

Closed - no mass transfer

- energy transfer

Open - mass transfer

- energy transfer

Types of Systems

Doesn't Exist The Earth(almost)

The Atmosphere

Earth's Major Subsystems - the 4 spheres

Lithosphere

Atmosphere

Hydrosphere

Biosphere

Major Earth Cycles

•

Energy and matter are exchanged between cycles

Water Cycle

Tectonic Cycle

Tectonic Cycle