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Chapter 4 Vocabulary
Rotation versus Revolution
11
Science
9th Grade
05/09/2011

Additional Science Flashcards

 


 

Cards

Term

 

 

 

Rotation

Definition

 

 

 

The turning of a body,

such as Earth on its axis.

Term

 

 

 

Standard Time Zones

Definition

 

 

 

Areas roughly defined by 24 - 15 degree celcius sections of longitude that establish

time zones/the hour of the day.

Term

 

 

 

Time Meridian

Definition

 

 

 

A line of longitude exactly divisible by 15 degrees on which each standard time zone is roughly centered.

Term

 

 

 

Prime Meridian

Definition

 

 

The imaginary line dividing Earth's surface into

eastern and western Hemisphere.

 

It is established at 0 degrees in Greenwhich, England

and is the starting point for time zones.

 

Term

 

 

 

International Date Line

Definition

 

 

 

The imaginary line placed at roughly 180 degrees longtitude where the new calendar day begins.

Term

 

 

 

Revolution

Definition

 

 

 

The movement of one body around another,

such as Earth in it's orbit around the sun.

Term

 

 

 

Parallax

Definition

 

 

 

The apparent shift in one object's position

relative to another

caused by a change in the location of the observer.

Term

 

 

 

Vernal Equinox

Definition

 

 

 

Start of spring in the northern hemisphere

Occuring on or about March 21st

and

being one of the 2 days each year when

day and night are equal.

Term

 

 

 

Summer Solstice

Definition

 

 

 

The first day of summer in the northern hemisphere

which occurs on or about June 21st

when the noon sun appears to reach its

northernmost point...

Term

 

 

 

Winter Solstice

Definition

 

 

 

The first day of winter in the northern hemisphere

occuring on our about December 21st

when the noon sun appears to reach is southernmost point...

Term

 

 

 

Autumnal Equinox

Definition

 

 

 

Start of fall in the northern hemisphere

Occuring on or about September 22

and

being one of the 2 days each year when

day and night are equal.

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