Crystals, Minerals and Caves
These can be distinguished from rocks by their sharp patterned shapes
Crystals
Erosion
The 3 types of rocks
Sedimentary, igneous, and metamorphic
2 types of weathering
Chemical and physical
A surface of erosion that separates one layer of rock from another.
Unconformity
What's the difference between stalactites and stalagmites?
Stalactites hang down from the ceiling, while stalagmites grow up from the ground
An abundance of these slow down erosion in soil
Plants
Rock formed from the 2 others
Metamorphic
Chemical
When magma shoots through several layers of strata
Intrusion
Rocks are made up of at least one mineral. T/F?
False. They're made of at least two different minerals
The most common agent of erosion
Water
Describe the rock cycle (how creation recycles rocks)
Weathering turns rocks into sediment, erosion deposits the sediments, then they form into rocks again.
Weathering transforms rocks into what?
Sediments
Veins of igneous rock that run in the same direction of the strata
Sills
What kind of water is responsible for creating caverns?
Groundwater
Fan-shaped area of deposited sediments at a river's end
Delta
Most sedimentary strata are laid down by ________.
water
Erosion: the process by which rocks and soil are broken down. T/F? If false, why?
Missing: "and transported away"
Parallel, stratified rock layers above and below the unconformity
Disconformity
If an icicle-like structure meets a structure rising from the ground, the result is called what?
Column or pillar
In what man-made structures can you find stalagmites and stalactites?
Basements
What's the difference between lava and magma?
lava is above ground; magma is under ground
What force could be responsible for both chemical AND physical weathering?
Acid rain
If a rock layer rests on another layer without erosion in between, the separation is not an _________
Unconformity