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What process is needed to make sedimentary rock?
weathering and erosion, compaction and cementation
What process is needed to make metamorphic rock?
heat and pressure
Which rock is the hardest? Which is the softest?
diamond, talc
What are the soil horizons? What can be found in each?
Humus, top soil, sub soil, bedrock
Why are earthworms important?
They fertilize the soil, they add air to the soil, etc
How can scientists test the texture of the soil?
Ball test, ribbon text, water test
What do scientists use to test the color of soil?
Munsell Color Chart
What are the types of soil?
sandy, loamy, clay, silty etc
What is soil made of?
organic matter (humus), rock particles, water, air
Who was Mary Anning?
The first fossil hunter, paleontologist
How are fossils formed?
see picture
What are the types of fossils?
Mold fossil, cast fossil, true form fossil, trace fossil
What is a fossil?
An animal preserved in rock.
What does the Mohs scale tell you?
How hard something is.
What properties of rocks can you use to classify them?
Color, texture, shape, size, pattern, luster etc
How are metamorphic rocks formed?
From sedimentary and igneous rocks under a lot of heat and pressure.
How are sedimentary rocks formed?
From layers of sediment pressed together
How are igneous rocks formed?
From cooled magma
What are the 3 types of rocks?
igneous, sedimentary, metamorphic
Where can you find rocks?
Possible answers: the earth's crust, in buildings, statues, the ocean floor, mountains, park etc