Continents
_______ is the least populated continent?
Antarctica
Used by children to leave a white mark?
Chalk
Shiny, black rocks used to make arrowheads.
Obsidian
Topsoil is more ____________ than subsoil.
fertile
The wearing away of the earth's topsoil.
Erosion
The earth rotates in direction from ___________ to _____________.
West to East
France, Germany, and Italy are located on which continent?
Europe
This rock floats.
Pumice
A diamond is a __________
Clay holds ___________ in the soil.
water
Under the continents and forms most of the earth's crust.
granite
The earth rotates on it's ___________
axis
Australia
You can write on this rock.
Slate
Can be made from shell.
Limestone
What is the shape of a delta?
triangle
365 1/4 days = one ____________
revolution
Day and night are caused by the earth's ____________
rotation
What is the largest continent?
Asia
This is made of mud.
Shale
A mineral is never _________-____________
man-made
A ______________ rock is formed by soil deposits made by moving water.
sedimentary
24 hours = 0ne ___________
Egypt and Nigeria are located on which continent?
Africa
Humus is __________ material in the soil.
Decayed
How many main groups do geologists divide rocks into?
3 main groups
What kind of rocks are formed from hot magma?
The tilt of the earth causes changing ___________
seasons
What continent contains Brazil, Peru, and Chile?
South America
Pebbles that are cemented together.
Conglomerate
The earth's ____________ is solid rock.
Crust
The part of the earth that is that is made of mostly solid, hot rock is the _______________.
mantle
Gravity is the _________ in moving water.
energy