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 (115 month(s) ago)

can i download sir,,,,?

By: jejoannie (115 month(s) ago)

can i download sir,,,,?

By: jejoannie (115 month(s) ago)

can i download sir,,,,?

By: jejoannie (115 month(s) ago)

can i download sir,,,,?

By: jejoannie (115 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

PowerPoint Presentation:

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

PowerPoint Presentation:

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

Spiral :

Spiral Dense center with spiral arms Bright and easy to see

PowerPoint Presentation:

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

Irregular:

Irregular No specific shape Contains large amounts of gas and dust

PowerPoint Presentation:

Small and faint therefore hard to see

Quasars:

Quasars

Quasars:

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

PowerPoint Presentation:

They emit radio waves and bright light

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