Contains sand, mud, clay, water, nutrients for plants, and dead plants. Dark in colour.
What would you find in the topsoil/humus layer of a soil profile?
100
Through cooled magma/lava.
How are Igneous rocks formed?
100
Inner core
What is the middle layer of the earth called?
100
It is very similar to topsoil/humus. It's great for growing crops for food!
What is loam soil used for?
100
Clay pottery, construction and house hold building such as bricks and tiles.
What are good uses for clay?
200
Contains broken pieces of rocks and minerals, small roots from grass. You would find ants and worms here. Lighter in colour.
What would you find in the subsoil layer of a soil profile?
200
Through pressure/compression.
How are sedimentary rocks formed? Think of how we made them with our starbursts!
200
Crust
What is outer layer of the earth called?
200
Breakdown of rocks, minerals or soil through wind, water, animals, bugs, other rocks, etc.
Define "weathering" and how does this occur?
200
Planting crops such as watermelon and peanuts.
What are good uses for sand soil?
300
1. Parent material -weathered rocks, lots deep tree
roots (what does "weathered" mean again?)
2. Bedrock - Bottom layer, large rocks almost all solid
rocks, barely any water.
2 part question. What would you find in the parent material layer of a soil profile? What would you find in the bedrock layer of a soil profile?
300
Through heat AND pressure!
How are metamorphic rocks formed?
300
Outer core
What is the layer beside inner core called? I will draw it on the board for you.
300
Erosion
What is another word for "weathering?"
300
Sand, clay, loam
What are the 3 different types of soil we studied?
400
Topsoil/humus, subsoil, parent material, bedrock.
What are the 4 layers of soil from top to bottom?
400
Teacher checks.
Draw the rock cycle on the board, label the 4 parts.
400
Mantle
What is the layer between outer core and crust called?
400
It is a rock forming mineral that is used to make glass!
Whats is feldspar used for?
400
Finest/lightest - clay
Coarsest/heaviest - sand
What which of the 3 types of soil is the finest? Which is the coarsest?
500
Water, air, humus, and tiny pieces of rocks
What 4 things make up soil?
500
EXtrusive igneous rock is outside of the earth and INtrusive rock is inside of the earth.
What is the difference between EXtrusive igneous rock and INtrusive igneous rock?
500
Teacher will check
Name 5 ways that we use rocks and minerals everyday.
500
3C DOES!
Who has the coolest grade 3 teacher in the world?!