Layers of Earth
What is the layer of the Earth with convection currents?
What is mantle
the area beneath earth's surface where rock that is under stress breaks,triggering an earthquake.
What is focus
Where earthquakes occur
Fault line
when magma reaches the surface it turns into this substance
What is lava
molten rock and gas leave the volcano through an opening
What is vent
Which layer of the Earth is made up of the plates?
What is crust
What is the name of the depressions in the ocean?
trenches
Movement of plates to cause an Earthquake
What is side to side
a week spot in the crust where molten material,or magma,comes to the surface
What is volcano
What is magma tube
What is outer crust
Is the measurements on a seismogram
What is wavelength and amplitude
What scale measures Earthquakes?
Richter Scale
an area where material from deep within the mantle rises and then melts,forming magma chamber, to erupt as a volcano
What is hot spot
is a bowl-shaped area that may form at the top of a volcano around the central vent
What is crater or caldera
What is the hot, dense ball of metal in the Earth?
What is the inner core
Where is newest rock found
where two tectonic plates meet
the record of an earthquake's seismic waves
What is seismogram
the resulting volcanoes create a string of islands from a hot spot called a ____
What is a chain of islands
is an area covered by lava as it pours out of a vent
What is lava flow
What causes the magma in the mantle to rise and fall? (2 words)
heat and density
What is the name of under water ocean mountain ranges?
ridges
the force that opposes the motion of the surface as it moves across another surface
What is friction
is a molten mixture of rock-forming substance,gases,and water from mantle
What is magma
beneath a volcano, magma collects in a pocket called
What is magma chamber