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WorksheetsUnit 4 - Plate Tectonics Review
Total questions: 38
Worksheet time: 45mins
Which layer of Earth’s interior has convection currents that move the tectonic plates?
A) Stiffer mantle
B) Asthenosphere
C) Outer core
D) Inner core
The theory of continental drift suggests that the
A) continents moved due to Earth's orbit around the sun
B) continents moved due to Earth's rotation
C) the continents are moving toward each other
D) the continents once fit together like puzzle parts
The movement of the tectonic plates is caused by
the rotation of the Earth.
convection currents in the Asthenosphere
the gravity of the iron-nickel core.
the Moho discontinuity.
Observe this diagram of a plate boundary. One statement BEST describes what is happening. It is that
the oceanic crust is melting.
the denser ceanic crust is subducting under the less dense oceanic crust
volcanic islands are forming.
the tectonic plates are moving away from each other.
What is the density range of the Inner Core?
3.4 - 5.6 g/cm3
9.9 - 12.2 g/cm3
12.3 - 13.1 g/cm3
2.7 g/cm3
What is the Outer Core made of ?
Nickel and Copper
Iron and Copper
Iron and Nickel
Copper and Plastic
Which has a lower density, the granitic continental crust or the basaltic oceanic crust?
granitic continental with a density of 2.7 g/cm3
granitic continental with a density of 3.0 g/cm3
basaltic continental with a density of 2.7 g/cm3
granitic continental with a density of 3.0 g/cm3
Use the top and middle of ESRT page 10.
What is the approximate pressure at the boundary between the inner core and the outer core? (follow the dashed line)
4.0 million atmospheres
3.0 million atmospheres
2.0 million atmospheres
1.0 million atmospheres
Use the lower chart on ESRT page 10.
What is the temperature at 3000 km depth?
3000 ºC
4000 ºC
5000 ºC
6000 ºC
Use the chart at the bottom of ESRT page 10.
At what depth is the temperature 2000 ºC ?
0 km
400 km
1000 km
5000 km
On what tectonic plate is the Hawaii hotspot located?
Pacific Plate
African Plate
Indian-Australian Plate
North American Plate
What type of plate motion is associated with the San Andreas Fault?
moving together
moving apart
moving side-by-side
not moving
Compared to the continental crust is OCEANIC CRUST (hint use esrt page 10)
made of granite and more dense
made of granite and less dense
made of basalt and more dense
made of basalt and less dense
What type of boundary is shown in the diagram?
Divergent
Convergent
Transform
What type of boundary is shown in the diagram?
Divergent
Convergent
Transform
Where are the youngest rocks on Earth found?
Along mid-ocean ridges
Along transform boundaries
On the edges of the continents
Near ocean trenches
What happens when two continental plates meet at a convergent boundary according to plate tectonics?
They push against each other to form deep-ocean trenches.
They push against each other to form folded mountain ranges.
One slides under the other to form magma.
One slides under the other to form new mantle.
Most Earthquakes and Volcanic Activity occur....
In the middle of tectonic plates
Along Plate Boundaries
Randomly around the word
What would CONVECTION cells look like at Divergent Plate Boundaries (Mid-Ocean Ridges)? (HELPER - ESRT P.10!) (HELPER #2 - What does MAGMA do at the RIDGE?!)
Which two tectonic plates are separated by a mid-ocean RIDGE?
(NEED ESRT P.5)
Indian-Australian and Eurasian
Indian-Australian and Pacific
North American and South American
North American and Eurasian
Which diagram correctly shows how mantle convection currents are most likely moving beneath colliding lithospheric plates (TRENCH!!!) Helper - ESRT p.10!
the map shows the locations of deep-sea core drilling sites numbered 1 through 4. diverging plate at the East Pacific Ridge is shown by a dashed line.
At which drilling site would the oldest igneous bedrock most likely be found?
1
2
3
4
Which diagram below best shows the pattern of normal and reversed polarity on the west side of the mid-ocean ridge?
What happens to PRESSURE, DENSITY and TEMPERATURE as you go DEEPER into the Earth (NEED ESRT p.10!)
They all INCREASE
They all DECREASE
They stay the same
Scientists do not know
The glacial feature seen here that provides evidence for Continental Drift
Coal
Striations.
Tropical Plants
Boulders
The continents were once joined in a super-continent (PANGEA) and have moved over time
Earth's Inner core is?
A layer of rock that forms Earth's outer surface
A layer of molten (liquid) iron and nickle
A layer of solid iron and nickel
A solid/plastic layer that flows over time
Why does hot mantle rise (go/move up)?
hot = less dense
hot = no change
hot = more dense
New oceanic crust (sea floor) is created at this boundary.
Divergent Oceanic
Divergent Continental
Convergent Oceanic
Transform
Oceanic crust (sea floor) is destroyed at this boundary.
Convergent Oceanic
Divergent Oceanic
Convergent Continental-Continental
Divergent Continental
The process where oceanic crust slides under another plate and is melted is called ___________.
seafloor spreading
subduction
continental drift
recycling
A divergent boundary on land creates what feature?
Mid Ocean Ridge
Rift
Subduction Zone
Trench
What is the only event associated with ALL plate boundaries?
Volcanoes
Earthquakes
Subduction
Deep Trenches
Which tectonic feature is associated with a complex or uncertain plate boundary? NEED ESRT P.5
Southwest Indian Ridge
East African Rift
Mariana Trench
Galapagos Hot Spot
Which tectonic plate boundary is best represented by this diagram? (NEED ESRT p.5)
Helper - what type of plate boundary is shown here? NOW match that with ESRT p.5!
Nazca Plate and Pacific Plate boundary
Scotia Plate and South American Plate boundary
Juan de Fuca Plate and North American Plate boundary
Antarctic Plate and Indian-Australian Plate boundary
