ENV 110 Lecture Notes - Lecture 1: Photosynthesis, Archean, Plate Tectonics

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8 Jun 2018

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Environmental Studies – Lecture 1

Ka = Thousands of years ago

Ma = Millions of years ago

Ga = Billions of years ago

Stars are immense balls of incandescent gas

• Light years: is the distance light travels in one year

• Light travel around earth 7.5 time in one sec

The Nature of Our Solar System

Sun is medium sized star orbited by 8 planets

• Our sun is about 99.8% of our solar systems mass

Planet

• Is a large body orbiting a star

• Spherical shape

• Cleared neighboring

Formation

Thea protoplanetary hits earth

• Collision debris form a ring around earth, coalesces and forms the moon

The Atmosphere and Oceans

When earth becomes cool enough

• Moisture condenses and accumulates

• The ocean comes into existence

The Hadean Eon

Diffusion of core and mantel

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