Shared Flashcard Set

Details

Ch 26 & 27 Vocab
Sun
18
Science
9th Grade
05/10/2011

Additional Science Flashcards

 


 

Cards

Term

 

 

 

Fusion

Definition

 

 

 

The combining of the nuclei of lighter elements to form heavier elements.

 

This is one method by which nuclear energy is produced.

Term

 

 

 

Photosphere

Definition

 

 

 

The visible surface of the sun.

Term

 

 

 

Chromosphere

Definition

 

 

 

The inner layer of the sun's atmosphere, located above the photosphere and below the corona.

Term

 

 

 

Corona

Definition

 

 

 

The outermost layer of the sun's atmosphere,

located above the chromosphere.

Term

 

 

 

Sunspot

Definition

 

 

 

Dark areas on the sun's photosphere that result from variations in the sun's magnetic field.

Term

 

 

 

Solar wind

Definition

 

 

 

A constant stream of electrically charged particles that is blown out from the sun in all directions.

Term

 

 

 

Aurora

Definition

 

 

 

A glow in the night sky produced in the upper atmosphere by particles from the solar wind interacting with Earth's magnetic field.

Term

 

 

 

Geocentric

Definition

 

 

 

A model of the universe that has

Earth at the center.

Term

 

 

 

Heliocentric

Definition

 

 

 

A model of the solar system that has the

sun at the center.

Term

 

 

 

Gravitation

Definition

 

 

 

The force of attraction between

any 2 objects with mass.

Term

 

 

Inner planets

Definition

 

 

 

The 4 planets closest to the sun.

Mercury, Venus, Mars, Earth,

Term

 

 

 

Outer planets

Definition

 

 

The 4 planets farthest from the sun and

past the asteroid belt...

Jupiter, Saturn, Uranus, Neptune

Term

 

 

 

Jovian Planets

Definition

 

 

Another term for the outer, gaseous planets.

Term

 

 

 

Asteroid

Definition

 

 

 

A solid, rocklike mass that revolves around the sun.

Term

 

 

 

Comet

Definition

 

 

 

A mass of rock, ice, dust and gas traveling

around the sun

and

usually in a highly eccentric orbit.

Term

 

 

 

Meteor

Definition

 

 

 

The light made by a meteoroid as it passes

through the Earth's atmosphere.

Term

 

 

 

Meteorite

Definition

 

 

 

The part of a large meteor that survives the trip through the Earth's atmosphere and strikes the Earth's surface.

Term

 

 

 

Meteor shower

Definition

 

 

 

A large number of meteors entering and burning up in the atmosphere.

 

They take place when Earth passes through a debris field.

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