Vocabulary
Convergent plate boundary
What is the plate boundary that collides
What does the magma do in the process?
What is magma forming into new ocean crust
What is a tectonic plate boundary?
What is the boarder between two plates
What is the mid ocean range?
What is an underwater ocean mountain range
Why does magma rise?
It is less dense
Lithosphere
The solid outer part of the earth
The old crust gets recycledand turns into what?
What is magma
What is a convergent plate boundary?
What is the parts of the plate that collide
How long is the mid-ocean range?
what is 40,390 miles
Why is it called a current?
It is never ending and repeats itself
Asthenosphere
What is the upper layer of the earths mantle
The old ocean crust goes into the mantle
What is a subduction zone?
What is plate boundary that moves away from each other?
How deep is the Mariana Trench?
What is 7 miles
Explain what a convection current is?
What are Changes in temperature create changes in density?
Divergent Plate Boundary
What is the plate boundary that spreads apart
Where is the newest crust formed on the ocean floor?
What is the mid ocean ridge?
How does the magma come up from the asthenosphere into the water
What is tectonic plates colliding and pressure
What percent of the inside of the earth is the mantle
What is 84%
The movement of Earth’s plates due to convection currents in the mantle can cause these natural events along plate boundaries.
What are volcanoes and earthquakes?
Which crust is older oceanic or continental?
What is continental crust?
How much does the seafloor spread a year?
What is 4 inches (3-5 cm) a year
This type of current in Earth’s mantle, caused by hot material rising and cooler material sinking, helps move tectonic plates.
What is convection?
What kind of rock is formed when magma touches water?
What is igneous rock
In convection currents, this property of material determines whether it rises or sinks in a fluid.
What is density?