What are the 2 types of the Earth's crust?
ocean and continental
Which plate is located at #2?
North American
Which plate is located at #1?
Pacific Plate
What type of plate boundary is this?
transform
What type of plate boundary is this?
subvergent
What type of plate boundary is this?
divergent
What type of plate boundary is this?
convergent
Which part of the earth is the most dense?
inner core
Which part of the earth is the least dense?
crust
What is the layer of earth right below the crust?
mantle or athensosphere
What is seafloor spreading?
tectonic plates split apart from each other
What happens in the Ring of Fire?
It is where many earthquakes happen and where volcanoes form
What is a fault?
cracks in the earth's crust where there is movement
Why do plate tectonics move?
Their movement is caused by heat within the Earth.
What is Pangea?
a theory that all of the continents were attached a long time ago
