Volcanoes
What is the difference between lava and magma?
Lava is magma that flows out onto Earth's surface. Magma is molten rock beneath the earth's surface.
What causes an earthquake?
What is the plates moving.
Scientists think continents were once a large single landmass that broke apart and then the continents slowly DRIFTED to their present locations. What is the name given to this theory?
What is continental drift?
Which layer of the Earth is the thinnest?
What is the crust?
Describe a divergent boundary.
What is the plates separate?
What are dormant volcanoes?
These volcanoes have become inactive, but people are not certain that they will not erupt again.
What is a break in the crust along which rock moves?
Fault
Tectonic plates pushing into each other is what kind of boundary?
What is a convergent boundary?
How is the outer core different than the inner core?
What is the outer core is liquid and the inner core is solid?
The theory that all continents are fragments of Pangaea now drifting apart
What is the Continental Drift Theory
What are Extinct Volcanoes?
Volcanoes that have not erupted in recorded history are considered to be extinct volcanoes.
An Earthquake in City A registers 5.6, City B 7.8, and City C 6.8. Which city had the strongest earthquake?
What is City B?
What happens at a transform boundary?
What is two plates move horizontally past one another?
Going from inner layer to outer layer, name the 3 compositional layers.
What is the core, the mantle, and the crust?
The thickest layer of the Earth
What is the mantle.
Where do most volcanoes occur?
Most volcanoes, like most earthquakes, occur along the boundaries between shifting tectonic plates.
What is the point on the surface that is above the focus
What is epicenter
About how much do plates move every year?
What is about 1-6 inches per year.
The Earth's core is made up of mainly two elements, name them.
What are nickel and iron?
When an oceanic plate and a continental plate collide, what is formed on the continental plate.
What are mountains (probably volcanic arc)?
What is Ring of Fire and where is it located?
A zone of frequent earthquakes and volcanic eruptions that encircles the Pacific Basin.
What is the instrument that records earthquake waves
Seismograph
What is formed when plates move apart and magma rises to the surface of the crust?
What is sea-floor spreading
This physical layer is divided into pieces called tectonic plates.
What is the lithosphere?
Created the Continental Drift Theory
Who is Alfred Wegener