Types of Rocks
________ metamorphic rocks are formed from intense pressure that creates bands (stripes) in the rocks crystalline structure.
EX. Gneiss
Foliated
This type of weathering DOES NOT change the chemical composition of a rock
A mass movement of soil down a slope is called what?
Landslide
Roughly 45% of soil is made of what?
Mineral Matter
The process of making a sedimentary rock are: Weathering, Erosion, _______, Compaction, Cementation
Deposition
What SPECIFIC type of rock forms from magma?
Intrusive Igneous Rock
The more _______ a rock has, the faster it will weather.
Surface Area
What is the cause of landslides?
Gravity
What is humus?
A rock deep under the ocean may undergo metamorphosis due to ________.
Hydrothermal Solutions
A sedimentary rock near a running water source will likely have what features?
Ripple Marks
Weathering and erosion will occur the SLOWEST in what type of environment?
Cold & Dry
Which type of mass movement occurs the SLOWEST?
Creep
Compared to sand: the particle size, porosity, and permeability of clay is _______.
Smaller
What is the name of the perfect soil mixture plants love most?
Granite's texture can be described as coarse grained. Which means it cooled _____ and _____.
slowly; inside the Earth
Digestive liquids ooze from a parasitic plant on to a rock and you notice the rock has changed color and appears smoother where the liquid was touching. What type of weathering did you witness?
Chemical Weathering
A volcano eruption in Pompeii, Italy caused the soil in the area to become very unstable. The next day a violent rainstorm flooded nearby rivers and the unstable soil mixed with the river water to create a violent ________.
Mudflow/Lahar
The climate in the Congo is very warm and wet. Would this type of climate have a large or small effect on soil formation in the area?
Large
Farmer Furr wakes up one morning to notice his fence posts are leaning to the side. Over time the posts lean more and more until he wakes up one day to see the posts and soil near them have moved violently down a hill leaving a scar in the land. What likely occurred over night?
Slump
A metamorphic and a sedimentary rock may have the same chemical makeup but are classified as different rocks. Why might this be?
Metamorphic rocks are formed from heat and pressure, sedimentary rocks are formed from compaction and cementation.
The topography of the Appalachians is very different from the topography of the Rockies. The Rockies are much more steep with less soil, and thus weathering would occur at a _______ rate.
Higher
Humans can destabilize soil formations, making the soil more likely to experience a mass movement. How might humans destabilize soil? (there could be many answers to this question)
Home/road construction on the side of a mountain.
Over time the slope angle of a mountain decreases due to erosion. What effect would this decreased slope angle have on the formation of soil?
Soil formation will increase
Frost Wedging