Earth Rocks 1 Rocks 2 Continents Grab Bag
100
solid rock
The earth's crust is made of what?
100
pumice
Which rock floats?
100
chalk
Which rock leaves a white mark?
100
Australia
Which continent is called the "Island Continent"?
100
humus
Decayed material in soil is called...
200
mantle
What part of the earth is made mostly of solid, hot rock?
200
granite
Which rock forms most of the earth's crust under the continents?
200
obsidian
Which rock is shiny & black & was used to make arrowheads?
200
Asia
Which continent is the largest?
200
erosion
What means....wearing away of the earth's topsoil?
300
365 1/4 days
How long is one revolution of the earth?
300
slate
Which rock can be used to write on?
300
marble
Which rock is used to make famous buildings and monuments?
300
Europe
Which continent contains the countries of Italy and France?
300
igneous
Which group of rocks is formed from hot magma?
400
one day or 24 hours
How long is one rotation of the earth?
400
limestone
Which rock can be made from seashells?
400
shale
Which rock is made from mud or clay?
400
Antarctica
Which continent is the least populated?
400
8,000 miles
What is the diameter of the earth?
500
west to east
What direction does the earth rotate?
500
conglomerate
Which rock contains pebbles that are cemented together?
500
Igneous, metamorphic, sedimentary
Name the 3 main rock groups.
500
Africa
Which continent contains the countries of Egypt and Nigeria?
500
25,000 miles
What is the circumference of the earth?






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