Free Powerpoint Presentations

The Formation of Our Solar System
Page
1

DOWNLOAD

PREVIEW

WATCH ALL SLIDES

Slide 1

Formation of Our Solar System

Formation of Our Solar System

By the Lunar and Planetary Institute For Use in Teacher Workshops

Image: Lunar and Planetary Laboratory:

Slide 2

Some data to explain:

Some data to explain:

1. Planets isolated

2. Orbits ~circular / in ~same plane

3. Planets (and moons) travel along orbits in same direction. same direction as Sun rotates (counter-clockwise viewed from above)

Lunar and Planetary Institute image at

Slide 3

Some more data to explain:

Some more data to explain:

4. Most planets rotate in this same direction

NASA images edited by LPI

Mercury 0 Venus 177 Earth 23 Mars 25

Jupiter 3 Saturn 27 Uranus 98 Neptune 30

Slide 4

And some more data to explain:

And some more data to explain:

5. Solar System highly differentiated:

Terrestrial Planets (rocky, dense with density ~4-5 g/cm3)

Jovian Planets (light, gassy, H, He, density 0.7-2)

Images: Lunar and Planetary Laboratory:

Slide 5

How Did We Get a Solar System?

How Did We Get a Solar System?

Huge cloud of cold, thinly dispersed interstellar gas and dust threaded with magnetic fields that resist collapse

Hubble image at

Image: LPI

Slide 6

Concentrations of dust and gas in the cloud; material starts to collect (gravity > magnetic forces)

Concentrations of dust and gas in the cloud; material starts to collect (gravity > magnetic forces)

How Did We Get a Solar System?

Hubble image at

Image: LPI

Slide 7

How Did We Get a Solar System?

How Did We Get a Solar System?

Gravity concentrates most stuff near center

Heat and pressure increase

Collapses central proto-sun rotates faster (probably got initial rotation from the cloud)

Slide 8

How Did We Get a Solar System?

How Did We Get a Solar System?

NASA artwork at

Rotating, flattening, contracting disk - solar nebula!

Equatorial Plane

Orbit Direction

Slide 9

After ~10 million years, material in center of nebula hot enough to fuse H

After ~10 million years, material in center of nebula hot enough to fuse H

.here comes the sun

How Did We Get a Solar System?

NASA/JPL-Caltech Image at

Slide 10

How Did We Get a Solar System?

How Did We Get a Solar System?

Hubble photo at

http://hubblesite.org/newscenter/archive/releases/star/protoplanetary-disk/2005/10/image/a/layout/thumb/

Metallic elements (Mg, Si, Fe) condense into solids at high temps. Combined with O to make tiny grains

Go to page:
 1  2  3  4 

Contents

Last added presentations

2010-2018 powerpoint presentations