Rocks
Rocks are made of these
Minerals
What is the largest size of rock you will see in soil?
Pebbles
When rocks get hot or cold, this happens to them.
They crack and break.
This type of rain causes chemical weathering.
Acid rain
Define humus.
Bits of dead plant and animal parts in the soil.
These are the different sizes of rock you see in soil.
Pebbles, gravel, sand, silt, and clay
What is the smallest size of rock you will see in soil?
Clay
These can grow into rocks, causing cracks.
Roots from plants and trees.
This is the type of change that rocks go through in chemical weathering.
Chemical change
What are earth materials?
Any nonliving natural resource that makes up Earth, including soil and water.
Weathering
You would use this property to identify parts of soil (like rocks and earth materials).
Size
Rocks can turn into interesting shapes when this weathers them.
Sand carried by wind.
In our investigation, we used this acid to show chemical weathering.
Vinegar
Define minaral.
An ingredient of a rock OR what a rock is made of.
A rock is considered what type of material?
Earth material
This affects how well plants grow in soil.
Abrasion happens with this kind of disaster.
Landslide
This other type of chemical can cause chemical weathering.
Salt
This is the rubbing, grinding, and bumping of rocks that causes physical weathering.
Abrasion
When water freezes, it creates this substance that breaks rocks.
Ice
This is where you would find soil with the most humus.
A forest
When water causes rocks to move around and crash in waves, this happens.
Abrasion
What happens to rocks that contain iron?
They rust
This is the process that breaks down a rock due to chemicals in the water and air causing a chemical reaction.
Chemical weathering.