1 Scientific Method and Origin of Earth

1 Scientific Method and Origin of Earth - Understanding...

Info iconThis preview shows pages 1–14. Sign up to view the full content.

View Full Document Right Arrow Icon
Click to edit Master subtitle style 3/1/11 Understanding Earth
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
3/1/11 How do scientists know the things, they think they know? 1. Observation and experimentation (data) 2. Development of hypothesis (educated guess) 3. Testing a hypothesis (gather more data 4. Theory 5. Model (Law/Principle/Paradigm)
Background image of page 2
3/1/11
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
3/1/11 Big Bang Origin of the Universe - Big Bang 13.7 Billion Years Ago (Ga) Condensation of our Solar System by ca. 4.56 Ga Gaseous Pillars in Big Bang
Background image of page 4
3/1/11 Nebular Hypothesis Diffuse, slowing rotating cloud Begins to contract due to
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
3/1/11 Nebular Hypothesis Begins to spin faster and flattens. Proto-sun becomes dense and hot- nuclear fusion.
Background image of page 6
3/1/11 Nebular Hypothesis Gas condenses and collides with dust to form planetesimals.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
3/1/11 Nebular Hypothesis Planetesimals collide and accrete to form planets.
Background image of page 8
3/1/11 The Solar System
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
3/1/11 Age of the Earth How do we know how old the Earth is? Oldest rocks on Earth are ~4 Ga (know by radiometric dating- talk about later) So where does the extra 0.6 Ga come from?
Background image of page 10
3/1/11 Age of the Earth Know the Earth is 4.6 Ga from METEORITES and the MOON. Why no 4.6 Ga rocks on Earth?
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
3/1/11 The Moon Impact of a Mars-sized body with proto-earth at ~4.5Ga, Collision tilted the Earth’s spin axis Ejected material formed the moon
Background image of page 12
3/1/11 Differentiation of the Earth
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 14
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/01/2011 for the course GEO 302D taught by Professor Rowe during the Spring '07 term at University of Texas.

Page1 / 33

1 Scientific Method and Origin of Earth - Understanding...

This preview shows document pages 1 - 14. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online