wednesday, october 12 th
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Wednesday, October 12 th. Lets Look at your Soils… Question of the day: Who was the character in the Peanuts comic strip who had the cloud of dust following him around? Ans : Pigpen. Pigpen. Why is he so dirty? Because he is so familiar with soil! - PowerPoint PPT PresentationTRANSCRIPT
Wednesday, October 12th
Wednesday, October 12th Lets Look at your Soils
Question of the day: Who was the character in the Peanuts comic strip who had the cloud of dust following him around?
Ans: Pigpen
PigpenWhy is he so dirty?
Because he is so familiar with soil!
Today we will get to know more about soil as well.
SoilsSoils are arranged in layers called horizons
The darkest, most nutritious layer is called the TOPSOIL
Under that is the SUBSOIL
SoilsPlease draw this in your notebook!
TopsoilSubsoilWeathered RockSoil Horizons
Sand vs. Soils
Which is soil?
How is soil different than sand?How is Sand formed?Through weathered rock
Soil vs. SandSoils has three different sized particles in it:SandSiltClay
Sand haswellsand sized particles
Soil ParticlesSandSiltClay
Depending on how much sand, silt, and clay a soil haswe can give it a name.
This is called a soil typeLets look at some soil particles.Im going to hand out jars to each table.
DO NOT shake or open the jars
Soil ParticlesSandSiltClay
Depending on how much sand, silt, and clay a soil haswe can give it a name.
This is called a soil typeSoil TypesEstimate the % of your soil that is sand,write this number down.
What % is silt?
What % is clay?
Soil TypesNow compare your percentages to the chart below and give your soil a type.
Lets look at the soil you brought in todayI will collect the jars of soil you have been usingtake out the soil you brought from home
Soil from HomeSlowly pour out your soil onto a paper towel.
Answer these questions about your soil in yournotebook.
1. Describe the things you see in your soil
Soil from HomeLook at the other soils at your table.
2. List three things all the soils have in common.
3. List three differences in the soils at your table.
Soil TypesIf a soil is very sandy, what type of area might it have come from?
How about a soil with littleorganic matter?
A soil with a lot of organic matter?
Soil Field TestLastlylets get dirty!
I will hand out the soil type field test and we will see what type of soil you have.