Soil Profile
This layer is composed of minerals & organic matter.
What is top soil?
This material gives soil its dark color & increases fertility.
What is humus?
What type of soil is made up of small grains of worn down rock that doesn't hold water?
What is sand?
A plant root grows through concrete
Mechanical weathering
This layer serves as the BASE for creating soil.
What is bedrock?
How is soil formed?
Rock erodes and is weathered into tiny pieces and is mixed with organic matter
What type of soil holds a lot of water very well and has nutrients?
What is Clay?
A marble statue left exposed outdoors weathers away due to acid rain
Chemical
What is Humus?
This layer of soil does not have humus and can hold some water
What is Subsoil?
This is what happens when weather, water, & living organisms break down rocks and create soil.
What is Weathering
A nail rusting in water
Chemical
This layer is made of broken rocks of various sizes as well as deep root systems.
What is Subsoil?
This characteristic determines how much air & water the soil can contain.
What is soil particle size?
This is the movement of soil or rocks by wind or water.
What is erosion?
What is a characteristic of clay particles
Soil is made up of... (Name 3 things that make up soil)
What are minerals, air, water, and organic material
This property causes soil to be acidic or alkaline.
What is PH
What layer of the soil is the oldest?
Bedrock
What does the soil tell us about the Earth?
Answers may vary