Plate Tectonics Flashcards
What is another word for the height of a mountain?
Elevation
What pattern of data have scientists noticed about mountains changing over time?
due to the force of plates tectonics
When it comes to earthquakes, What does an epicenter mean?
The exact point on the Earth’s surface directly above where the earthquakes originated.
List as many things as you can that are found in sediment:
Sand, soil, minerals, rocks and pebbles
How is a sedimentary rock formed?
Layers of deposited sediment compacted together.
What are tectonic plates?
Earth’s crust that move slowly and fits like a piece of puzzle
What type of rock is usually found under the ocean? describe it.
Basalt, Igneous rock formed from volcanic lava.
What is the most common rock found underground? describe it.
Granite, igneous rock that forms when magma cools slowly.
What does a convergent boundary do?
Where 2 plates move towards each other. causing earthquakes, volcanoes and mountain ranges.
Describe how subduction works.
when 2 plates converge, one slide beneath the other plate.
If one crust is more dense than the other, what does it do?
it will naturally sink lower.
What is a divergent boundary?
when 2 plates move apart from each other.
What is another name for inverted V type structure?
Mountains
How does a transform boundary works?
when 2 plates slide past each other.
What often occurs to an transform boundaries?
Earthquake
What is a mid-ocean ridge?
underwater plate occurring a divergent boundary where plates are pulling apart.
What is formed at a mid ocean ridge?
New oceanic crust
What are some effects on mountains due to plates moving?
Rise, crumple, fold and even erode.
What evidence supports the idea that plates move and were once in different locations on earth than they are today?
The continents fits like a piece of puzzle.
What happens when continental plates collide?
it force the earth’s crust upwards.
When erosion rates are higher than uplift rates, land increases in elevation.
False
When erosion rates are higher than uplift rates, land decreases in erosion.
True
When erosion rates are higher than uplift rates, there is no change in elevation.
False
When waves break up, it’s the process of
weathering
