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# Social Studies-HM Ch1, Grade 4

## Terms

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sphere
a shape like a ball
hemisphere
half of a sphere
globe
a model of the Earth
How many continents are there?
7
1/3 of the Earth is covered with
large bodies of land (continents)
oceans
large bodies of water
How many oceans are there?
4
2/3 of the Earth is covered with
oceans, large bodies of water.
history
a special event that happened in the past.
geography
the study of the Earth, and the way people, plants, animals, live on it and use it.
Some different types of maps are:
* Grid
* Elevation
* Contour
* Relief, etc.
Parts of a map:
* title
* compass rose
* key
symbols
* scale
maps
show parts of the Earth.
main directions
* North
* South
* East
* West
intermediate directions:
middle directions.
Lines of Longitude and Latitude:
Longitude=Long
Latitude=Wide
How many miles around is the Earth?
20,000 miles around
How much of the Earth can be seen at one time?
1/2
North Pole
Northern most point of the Earth or top of the Earth.
South Pole
Southern most point of the Earth or bottom of the Earth.
Lines of Longitude and Latitude
imaginary lines that divide the Earth. Measured in degrees o
Longitude Lines
(Meridians) lines that run up and down that measure the degrees West or East of the Prime Meridian.
Prime Meridian
Line of Longitude that divides the Earth into the Western & Eastern Hemispheres.
Latitude Lines
(Parallels) lines that run left to right that measure the degrees North or South from the Equator.
Equator
Line of Latitude that divides the Earth into the Northern and Southern Hemispheres.
North America is in which 2 Hemispheres?
North America is in the Northern and Eastern Hemispheres.
Continents
7 large land masses.
Continent Song:
North America, South America, Antarctica, Europe, Australia, Asia and Africa

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