the black hole

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Presentation Description

this power point see you the black holes in the space

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By: jejoannie (21 month(s) ago)

can i download sir,,,,?

By: jejoannie (21 month(s) ago)

can i download sir,,,,?

By: jejoannie (21 month(s) ago)

can i download sir,,,,?

By: jejoannie (21 month(s) ago)

can i download sir,,,,?

By: jejoannie (21 month(s) ago)

can i download sir,,,,?

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Presentation Transcript

Black Holes : 

Black Holes Free powerpoints at http://www.worldofteaching.com

Black Holes : 

Black Holes The intense gravitational field left when a giant star collapses

Slide 6: 

It is called a black hole because not even light can escape

Photon Sphere : 

Photon Sphere The outer edge where light bends but is still escapable

Event Horizon : 

Event Horizon The point at which no light can escape

Singularity : 

Singularity The shrunken star too small to be measured but with indefinite density

Galaxies : 

Galaxies

Galaxy : 

Galaxy A large assembly of stars and nebulae

Group of Galaxies : 

Group of Galaxies

The Milky Way : 

The Milky Way Our galaxy Flat disk with spiral arms

Three Types of Galaxies : 

Three Types of Galaxies

Elliptical : 

Elliptical Oval shaped Most common type of galaxy found

Slide 20: 

Contains little gas and dust Most are dim and difficult to see

Spiral : 

Spiral Dense center with spiral arms Bright and easy to see

Slide 23: 

Contains large amounts of gas and dust – always producing new stars

Irregular : 

Irregular No specific shape Contains large amounts of gas and dust

Slide 27: 

Small and faint therefore hard to see

Quasars : 

Quasars

Quasars : 

Quasars Small, powerful source of energy thought to be cores of distant spiral galaxies

Slide 31: 

They emit radio waves and bright light