Vocabulary
A pulling force that acts on all objects
Gravity
What are the causes of a landslide?
earthquakes, volcanic eruptions, storms, fires, building in sloped areas, freezing and thawing of rocks
What causes a tsunami?
plates moving (earthquakes) on the ocean floor
Where do rift volcanoes form?
On the ocean floor
Fault
a break or crack in Earth’s crust where two plates come together
Mudslide
A river of mud and rock
What are the effects of a landslide?
can carry trees, homes, cars; property damage
Describe a normal fault.
plates pull apart, rocks above the fault surface move down
Which popular place was formed over a hot spot?
The Hawaiian Islands
Gigantic slabs of rock. They fit together like the pieces of a puzzle, and are always moving
Plates
When a large amount of loose rock and soil moves rapidly
Landslide
What causes floods?
heavy rains, drain overflow
Describe a reverse fault.
plates push together, rocks above the fault surface move upward
What is the difference between an active volcano and a dormant volcano?
Active - still erupting
Dormant - no longer erupting
Hot spot
a place where magma partially melts through Earth’s crust
the flow of water over the banks of a body of water and across land. Large amounts of rainfall can cause floods along rivers
Flood
What causes mudslides?
heavy rains
Describe a strike-slip fault.
rocks slide past each other in different directions
Where on Earth's crust are hot spots located?
The middle of plates
a mountain that builds up around an opening in Earth’s crust
Volcano