Plate Boundaries
Earthquakes & Volcanoes
Continental Drift
Mixed Bag 1
Mixed Bag 2
100
List the three types of plate boundaries
Convergent, divergent, transform
100
What are the three types of seismic waves?
S waves, P waves and surface waves
100
Who proposed the theory of continental drift?
Alfred Wegener.
100
What is the name of the supercontinent that existed about 250 million years ago?
Pangaea.
100
What does an earthquake under the ocean cause?
Tsunami
200
What feature forms at divergent boundaries under the ocean?
Mid-ocean ridge.
200
What type of plate boundary is associated with the creation of volcanic island arcs?
Convergent boundary (oceanic-oceanic subduction).
200
Name one piece of evidence Wegener used to support continental drift.
Matching fossils on different continents, continents fit together like a jigsaw puzzle
200
Name the two types of Earth's crust
Oceanic and continental
200
What type of plate boundary is associated with a rift valley?
Divergent (continental crust)
300
What type of plate boundary are mountain ranges associated with? Give an example
Convergent (continental-continental) e.g., Himilayas
300
What is the difference between the focus and the epicenter of an earthquake?
The focus is the point inside Earth where the earthquake starts; the epicenter is directly above it on the surface.
300
Who proposed the theory of seafloor spreading?
Harry Hess
300
What is the name of the process that creates the 'striping' pattern on the seafloor?
Magnetic striping
300
Where was the first modern Olympic Games held?
Athens, Greece
400
Why does oceanic crust slide (subduct) under continental crust?
Oceanic crust is denser than continental crust
400
What is the name of the phenomena that produces volcanos away from tectonic plate boundaries?
Volcanic hotspot
400
Movement in which Earth's layer causes continental drift?
The mantle
400
How many albums does Taylor Swift have?
12 or 16 (including re-recorded albums)
400
Give one reason why Australia's flora and fauna is so unique
1. Australia has been isolated from other continents for a long time.
2. Hot/dry climate, which has been stable for millions of years
500
Describe how seafloor spreading leads to the formation of new seafloor. Use a diagram to support your answer
Seafloor spreading showed that new crust forms at mid-ocean ridges and moves outward, pushing continents apart.
500
Predict the environmental effects of a major volcanic eruption
Ash clouds can block sunlight, cooling global temperatures; lava flows destroy habitats; gases like sulfur dioxide can cause acid rain and affect air quality.
500
Why was Wegner's theory of continental drift not initially accepted?
He had no evidence for it - he couldn't explain hoe continents moved.
500
Describe how convection currents in the mantle drive plate movement.
Heat causes mantle material to rise and sink, creating currents that drag plates along.
500
Draw and label a diagram to show a subduction zone
