What is Soil?
Weathering
Size matters
Vocabulary
Investigations
100
The process of when formerly organic materials break down into smaller components. Think of your teeth if you don't brush them regularly.
What is decay?
100
The process of breaking apart rocks into smaller parts.
What is weathering?
100
I'm between 6 mm and 64 mm.
What is a pebble?
100
A mix of humus, sand, silt, clay, gravel, and/or pebbles
What is soil?
100
Shaking the square sugar cubes in the jar until they became smooth spheres was an example of what type of weathering?
What is physical weathering?
200
The more science-appropriate term for dirt.
What is soil?
200
These plants are known for breaking rocks into smaller pieces as their roots grow into cracks.
What are trees?
200
I am between 2 mm and 6 mm.
What is gravel?
200
Although I sound like the popular Mediterranean dip, I am actually bits of dead plant and animal parts in the soil.
What is humus?
200
You would find this type of earth material in a forest because it would have a lot of decaying plant and animal life.
What is humus?
300
These simple creatures benefit the soil by creating space, water, and nutrients.
What are worms?
300
Who is the greatest TEACHER OF ALL TIME!
Who is DUH, Mr. Keys?
300
I am between 1 mm and 2 mm.
What is sand?
300
The process by which rocks are broken down by breaking and banging.
What is physical weathering?
300
The property that someone can identify to classify a component of soil.
What is the size?
400
The smallest component of soil. It is invisible to the bare eye.
What is clay?
400
This happens when rocks fall, tumble in flowing water, or crash around in waves.
What is a landslide?
400
I am smaller than sand, but larger than clay particles.
What is silt?
400
I am an ingredient of a rock.
What is a mineral?
400
The type of weather that created this landform. 
What is wind blowing into sand?
500
Humus provides this for soil, changing the color from a dull tan to a rich dark brown.
What are nutrients?
500
This landform, found in Utah, is formed by wind and sand, which abrade rocks.
What is a hoodoo?
500
I am so small that you cannot see my particles without a hand lens.
What is clay?
500
A metamorphic rock formed when limestone is subjected to heat and pressure.
What is marble?
500
This type of weather can change the properties of a 
material by exposing it to acids or other substances, altering the physical properties of an object.
What is chemical weathering?