Chapter 1 - Chapter 1 Summary 4 Spheres Planets(terrestrial...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 1 Summary 4 Spheres Planets (terrestrial or gas giants, and 3 rules for planets) Polarity Seasons 4 SPHERES 1. Biosphere -vegetation, plants, animals, etc. 2. Hydrosphere -storages of water, precipitation 3. Lithosphere -rocks, minerals, land forms 4. Atmosphere -layer of gases, weather/climate Introduction to Earth The Solar System -Big Bang > 13.7 billion years ago - 4.6 billion years ago- nebula collapses - Protostar and ring of gas and dust - 9 planets The Planets -Elliptical orbits -Planets 1-4 referred to as terrestrial planets -smaller, denser, and less oblate -Planets 5-9 referred to as Jovian planets/ gas giants -much larger, less dense, and more oblate -90 moons -approx. 1 billion asteroids Characteristics of a planet 1. must directly orbit a star 2. large enough for gravity to give it a spheroid shape 3. must clear the neighborhood around its orbit Mercury - not as much atmosphere which results in a cratered surface
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/07/2008 for the course GEOG 1114 taught by Professor ? during the Spring '08 term at Oklahoma State.

Page1 / 3

Chapter 1 - Chapter 1 Summary 4 Spheres Planets(terrestrial...

This preview shows document pages 1 - 2. Sign up to view the full document.

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