Chemical Weathering
Mechanical Weathering
soil horizons
rock types
extra
100
Water
What form of mechanical weathering makes beach sand ?
100
6 Types
how many types of mechanical types of weathering are there ?
100
The top, organic layer of soil, made up mostly of leaf litter and humus (decomposed organic matter). A Horizon - The layer called topsoil; it is found below the O horizon and above the E horizon. Seeds germinate and plant roots grow in this dark-colored layer.
What is horizon A made up of ?
100
quartz in their makeup: quartzite, quartz sandstones, rhyolites and granite's,
What is the hardest rocks on earth ?
100
Chemical and Mechanical
What is the two types of weathering ?
200
5 types
How many types of chemical weathering are there ?
200
The heat from the day causes the rocks to expand and the cooling off at night causes them to shrink. This repeated action will eventually break the rocks!
How does temperature effect rocks ?
200
It is made up mostly of sand and silt, having lost most of its minerals and clay as water drips through the soil (in the process of evaluation). B Horizon - Also called the subsoil - this layer is beneath the E Horizon and above the C Horizon.
What is horizon B made up of ?
200
a reddish- or yellowish-brown flaky coating of iron oxide that is formed on iron or steel by oxidation, especially in the presence of moisture.
What is rust ?
200
A worm
What type of living organism can you most likely can you find playing in the dirt?
300
lichens growing on the rocks and produce tannic acid that eat away and break down the rock
What is the living organism that breaks down rocks ?
300
Ice Wedging
What type of mechanical weathering creates potholes?
300
C horizon. In ABC soil, the lowermost zone, consisting mainly of unconsolidated, weathered rock fragments. By comparison with the A and B horizons, the C horizon is relatively unaffected by the processes of soil formation and therefore does not exhibit as much internal layering
What is horizon c made up of?
300
Earth's crust is made of rock, and rock is made of natural substances called MINERALS. There are three main types of rock—sedimentary, igneous, and metamorphic rock. Each type is produced in different ways. The oldest rocks on Earth were formed about 3.8 billion years ago.
How are rocks made ?
300
Humus usually refers to the natural decay of material such as leaves in the soil's top layer. Humus is dark, organic material that forms in soil when plant and animal matter decays.
What is humas ?
400
This is a chemical reaction that causes rust and the red color in rocks.
What is oxidation ?
400
Gravity
What is the mechanical type of weathering that make rocks falling, colliding, and smashing apart due to gravity pulling the rocks down from a high elevation to low elevation
400
Bedrock
What is the last layer of soil called ?
400
Sedimentary, metamorphic, and igneous
What are the three main types of rock ?
400
Two factors affect the rate of weathering: Type of Rock:If a rock's minerals can dissolve easily, it will weather faster. If the rock is permeable, which means it has little connected air spaces, it weathers faster. Climate:Wet climates can cause chemical changes and frost wedging. Hotter places cause chemical reactions to occur faster. Human activity, such as causing acid rain, can also cause weathering.
Does weathering happen fast or slow ?
500
Acid Rain
What causes causes RAPID chemical weathering by eating away and burning the rock down.
500
Exfoliation
What is it called when rocks peel away and break off due to pressure.
500
5 layers
how many layers are there in soil ?
500
The rock cycle is a basic concept in geology that describes the time-consuming transitions through geologic time
What is the rock cycle ?
500
Minerals
What is the things called that make up rocks ?
M
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