Continents
The largest continent
What is Asia?
Takes the earth 365 1/4 days
What is a revolution?
Shiny, black used to make arrowheads
What is obsidian?
Decayed material in soil
What is humus?
Makes up most of earth's mantle
What is magma?
Island continent
What is Australia?
Takes the earth 1 day
What is a rotation?
Rock that floats
What is pumice?
Holds water in the soil
What is clay?
Number of main rock groups
What is three?
Least populated continent
What is Antarctica?
Causes the hemispheres to have seasons
What is the tilt of the earth?
Can be used to write on
What is slate?
Shape of delta
What is triangle?
Makes up earth's crust
What is solid rock?
Contains Brazil, Peru and Chile
What is South America?
Gives moving water its energy
What is gravity?
Used to make the Lincoln Memorial
What is marble?
Never man-made
What is mineral?
Rock made of mud
What is shale?
Contains Egypt an Nigeria
Imaginary line through the middle of the earth
What is axis?
Pebbles that are cemented together
What is conglomerate?
Wearing away of earth's topsoil
What is erosion?
Rock formed from soil deposits made by moving water
What is sedimentary?