A mineral breaking unevenly, with a rough, jagged surface
200
What must happen to a rock before it becomes a metamorphic rock?
heat and pressure
200
What process MOVES sediment?
erosion
200
What layer of the earth has the highest temperature and pressure?
core
200
What is humus?
The decomposed organic matter in soil
300
What type of structure does a mineral have?
crystal
300
What must happen to a rock before it becomes an igneous rock?
melting and solidification
300
Give an example of a type of mechanical weathering.
physical weathering- through temperature, ice wedging, organic
300
What is formed when two tectonic plates collide?
mountains
300
What landform is created from the top of a cavern collapsing?
sinkhole
400
What is the definition of a mineral?
An inorganic solid with a crystalline structure found in nature.
400
What must happen to a rock before it becomes a sedimentary rock?
sediment gets buried and cemented together
400
Give an example of chemical weathering.
weathering by changing chemical composition- oxidation, acid rain, plant acids, carbonization
400
Where do earthquakes occur?
Along plate boundaries (faults)
400
What does uniformitarianism say?
That the earth is changing today the same way it's been changing for years.
500
How are minerals identified?
color, streak, luster, how it breaks, density, hardness
500
What is sediment?
Solid materials such as rock fragments, plants and animal remains, or minerals that are carried by water or air that settle on the bottom of a body of water or on the ground.
500
What process DROPS OFF sediment?
deposition
500
Where do volcanoes occur?
Along divergent and subduction boundaries
500
What type of lake is formed from a retreating glacier?