Earth's Layers
This is the thin, solid outer layer of Earth.
What is Crust
These are large pieces of Earth’s crust that move slowly.
what are Tectonic plates?
This hazard is caused when the ground shakes suddenly.
Earthquake
This is the name for the slow process where rocks change from one type to another.
Rock cycle
This rock type forms from cooled lava or magma.
Igneous
This layer is below the crust and contains slowly moving hot rock.
What is mantle?
This scientist proposed continental drift.
who is Alfred Wegener?
This boundary occurs when two plates move apart.
Divergent boundary
This process breaks rocks into smaller pieces.
Weathering
This rock type often forms in layers and may contain fossils.
Sedimentary
This is the hottest layer of Earth.
What is inner core?
This ancient supercontinent means “all lands”.
what is Pangaea?
This boundary occurs when two plates slide past each other.
Transform boundary
This process moves sediment from one place to another.
Erosion
This rock type forms when heat and pressure change an existing rock.
Metamorphic
Convection currents in this layer help move tectonic plates.
what is Mantle?
Fossils found on different continents helped support this theory.
Continental drift
This boundary can create mountains when plates collide.
Convergent boundary
This process squeezes sediments together over time.
Compaction
Limestone can change into this metamorphic rock.
Marble
Earth’s outer core is liquid and is mostly made of these metals.
what is Iron and nickel?
Plate tectonics explains the pattern of earthquakes, volcanoes and mountain ranges because…
Plates move and interact at boundaries
This event can be triggered by an underwater earthquake and may cause flooding near coasts.
Tsunami
To form igneous rock, molten rock must do this.
Cool and solidify
This rock is light, full of holes and can sometimes float on water.
Pumice