Plate Boundaries 1
_________ are formed when two continental plates converge.
mountains
Plates slide past one another at ____.
transform boundaries
What is the difference between lava and magma?
lava is outside the earth, magma is inside
Where do earthquakes occur
along plate boundaries - transform
What is weathering and erosion?
weathering breaks rocks down and erosion moves them away.
___________ and _____________ are formed when an oceanic and continental plate converge (subduct).
trenches and volcanoes
What process occurs at divergent oceanic boundaries and what is formed?
sea floor spreading - mid ocean ridge is formed
Where can volcanoes form?
convergent subduction boundaries and divergent boundaries and hot spots
The point in Earth's interior where the energy release of an earthquake occurs is the _______.
focus
What material can increase the speed of chemical weathering on rocks?
water, oxygen...other answers
The crust and upper mantle make up Earth's ________. This is where the plates are located.
lithosphere
The theory that continents have slowly moved to their current locations is called ____________.
continental drift theory
What is one benefit of a volcanic eruption?
soil becomes enriched with nutrients - other answers too
The most destructive seismic wave are _______.
surface waves
What are the 4 agents of erosion?
water, wind, ice and gravity
A vast, underwater mountain chain is called a(n) _________.
mid ocean ridge
What makes the tectonic plates move?
convection currents in the magma within the asthenosphere
Volcanoes __________ to the hotspot are younger than volcanoes farther away from the hotspot.
closer
A crack in Earth’s lithosphere where one block of rock moves toward, away from, or past another is called a _______.
fault
A short, heavy rainstorm occurs on the mountain. How will the amount of water and erosion on the mountainside be affected during the storm?
the amount of water and erosion will both increase
At an oceanic-oceanic convergent plate boundary, ______________.
a. new crust is created
b. old crust is recycled by subduction
c. old crust is deformed or fractured
d. plates slide past one another
b
What forms when two oceanic plates converge (subduct)?
volcanic arc of islands
Where do hot spot volcanoes form relative to plate boundaries?
in the middle of plate boundaries
Scientists are comparing a size 4 and a size 6 earthquake. How much stronger is the larger earthquake?
100 times
Name 5 types of physical weathering and 3 types of chemical weathering
physical - plant roots, ice wedging, abrasion, gravity, burrowing, temperature change
chemical - oxidation, hydrolysis and carbonation