Which land feature(s) is created from a divergent boundary (when plates separate)?
- Rift Valleys and Mid-Oceanic Ridges
- Trenches and Island Arcs
- Fault Lines
Select true or false based on the statements below.
- Contour lines that are closer together represent more steep landforms.
- The asthenosphere is responsible for the movement of the tectonic plates.
- In convection currents, hot magma rises, cool magma sinks.
- Harry Hess discovered the idea of sea floor spreading in 1960s.
- Alfred Wegener, from Germany, proposed the idea of continental drift in 1915.
- The relief is the difference between two elevations on a topographic map.
- The lithosphere layer IS the tectonic plates.
- Contour lines that are farther apart represent more gentle landforms.
- Hotspots are HOT volcanic regions that create volcanic mountains by melting through the crust. EXAMPLE: Hawaii
- In a topographic map, the "arrows" shown point downstream.
Match the description with the correct boundary.
Divergent BoundaryPlates separate, forms rift valleys and mid-oceanic ridges. EXAMPLES: Thingvellier and Mid-Atlantic Ridge
Convergent Boundary (1)Subduction, collision of oceanic-continental, forms trenches and volcanoes. EXAMPLES: Andes Mountains and Mariana Trench
Convergent Boundary (2)Subduction, collision of oceanic-oceanic, forms trenches and island arcs. EXAMPLES: Japan and Aleutian Islands
Convergent Boundary (3)Collision of continental-continental, forms mountains. EXAMPLE: Himalayan Mountains
Transform BoundaryPlates slide horizontally, forms fault lines. EXAMPLE: San Andreas
In a subduction zone, where would the newest formed crust be found?
- At the bottom
- At the top
This landform is a string of underwater volcanoes and earthquake sites around the edges of the Pacific Ocean. These are caused by subduction zones from convergent plate boundaries when two plates come together. Which famous landform is described?
- Mid-Atlantic Ridge
- Mariana Trench
- Ring of Fire
- Aleutian Islands
- Island Arcs
Explain why the oceanic crust subducts below the continental crust in a convergent boundary.
Select the four pieces of evidence that supported Wegener's theory of continental drift.
- Similar glacier deposits in South America and Africa
- Fossil findings (same species, different continents)
- Outlines of South America and India fit together
- Mountain ranges line up between Africa and South America
- The Mid-Atlantic Ridge was once a mountain in Eastern India
- Outlines of South America and Africa fit together
Select the land feature(s) that are located on the oceans bottom.
- Island Arcs
- Rift Valleys
- Fault Lines
- Mid-Oceanic Ridges
Select the two types of mountains we discussed with a correct description.
- Fold Mountains: Created when two tectonic plates collide head on (Continental-Continental)
- Fault Block Mountains: Created when faults or cracks in the earth's crust force some materials or blocks of rock up and others down.
- Volcanic Mountains: Created from magma build-up (Continental-Oceanic)
- Fold Mountains: Created when two glaciers fold together. (Continental-Continental)
- Volcanic Mountains: Created from a great amount of melted rock (magma) pushing its way up under the earth crust. (Continental-Oceanic)
Which type of plate movement/boundary is causing the Himalaya Mountains to grow taller?
- Convergent Boundary (Continental-Continental)
- Convergent Boundary (Continental-Oceanic)
- Divergent Boundary (Plates separate)
- Transform Boundary (Plates slide horizontally)
- Convergent Boundary (Oceanic-Oceanic)