Soil
What is soil made of?
It is made of loose rocks and bits of decaying plant and animal materials
What are rocks?
Hard pieces of the earth's surface
What are minerals?
Solid materials in nature that were never alive
What is a fossil?
The remains or the trace of a living thing that has died
What is humus?
The remains of living things that have died and decayed
How are sedimentary rocks formed?
Forms when layers of sediment are pressed together and harden
What scale shows the hardness of minerals?
Mohs Hardness Scale
What does Extinct mean?
None of the plants or animals of a certain kind are still alive
The layer of soil that has larger pieces of rock and less humus
Subsoil
This rock forms when melted rock cools.
Igneous Rock
What level of hardness is topaz on the hardness scale?
8
Plants grow in this layer
Topsoil
This rock forms when igneous rock or sedimentary rock are changed by great heat and pressure
Metamorphic
What type of mineral can scratch all other minerals?
Diamond
How long ago did the Flood happen?
around 5,000 years ago
The layer that is a large, unbroken rock.
Bedrock
What type of rock is slate?
Metamorphic
Each mineral has its own crystal_______.
Shape
What type of rock are most fossils found in?
Sedimentary