Vocab
A theory that the continents slowly drifted apart
Continental Drift
Which boundary do the tectonic plates scrape against each other
Transform
The law that older rocks are on the bottom and younger on the top?
Low of Superposition
Rocks made from broken down pieces of rock
Sedimentary Rock
What changes the shape and size of rocks by breaking them?
Weathering
A theory that the earths crust slowly moves as the flow of mantle slowly moves the plates
Plate Tectonics
Which boundary do the tectonic plates crash into each other?
Convergent
Law that states if there is an intrusion, the intrusion is younger than the layers it cuts through?
Law of cross cutting relationships
Rocks made when hot magma melts rocks
Igneous Rocks
The process of moving weathered materials
Erosion
A super continent that existed 225 million years ago
Pangea
Which boundaries do the plates move away from each other?
Divergent
Law that rock layers are deposited horizontally?
Law of horizontality
Rocks formed by intense heat and pressure?
Metamorphic rock
Rock fragments, sand, silt or clay broken down by weathering
Evidence that the continents may have fit together millions of years ago
Continental shapes
Which boundaries create a mountains and volcanos?
Convergent
Law that the earth is always changing both slowly over time and quickly
Law of Uniformitarianism
Where are the rocks pushed as they get older?
Further down into the earths layers
The process of breaking down rocks without changing the composition of the rock?
Physical Weathering
A divergent boundary that causes plates to move away from each other and create an underwater ridge
Seafloor Spreading
Which boundaries create earthquakes?
Transform
Name two ways the earth can change quickly
Earthquake, volcano, landslide
What are two causes of weathering?
Wind, Water, Chemicals & Human Involvement
The process that changes the composition of rocks can occur when minerals react with air and water to form new minerals?
Chemical Weathering