What is weathering? How many types are there?
The breaking off material from rock and other stuff into small pieces. There are 2 types.
What is mechanical weathering?
Weathering cause by physical force breaking pieces of an object off
What is chemical weathering?
weathering caused by chemical reactions rather than physical force.
What is humus?
It is decayed organic material and is one of the main ingredients of soil.
What is soil? What is it made of?
It is loose material on Earth's surface where plants grow. It is made of humus, wethered material such as rocks, minerals, air, and water
What effects the rate of weathering?
The material the thing that is being weathered is made of. The climate.
What type of material will weather faster?
Usually more permeable material weathers faster.
What kind of climate leads to things weathering faster?
In general warm and/or wet climates lead to things weathering faster.
What is a horizon (in relation to the material we're working on)?
It is the clear difference between laters of dirt.
What is uniformitarianism? (besides being cool, big word you can use to impress your friends)
It is the idea that the same processes and forces that have always formed the Earth, still form the Earth
What is erosion?
The process where natural forces break down and wear landforms away over time.
How many sizes of soil are there? Rank them from biggest to smallest
4. Gravel, sand, silt, clay
What is the dividing line between layers of dirt called? What makes them different?
Horizon. Soil/dirt that differes color, texture, composition from the layers above and below it.
Why do things in/on the ground decompse?
Organisms such as small mammals, bacteria, and fungi in the soil help to break it down.
What is abrasion?
the wearing away or rubbing off of a surface by friction or scraping
What are the 4 types of mass movement?
Landslide, mudflow, slump, creep
