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Plate Tectonics
Layers of Earth, Cont Drift, Plate Tectonics, volcanoes,earthquakes
| Question | Answer |
|---|---|
| Which of Earth's 4 layers is the thinnest? | crust |
| Which of Earth's 4 layers is hottest? | inner core |
| What element makes the core the densest layer? | iron (and nickel) |
| The inner core is a ____________________ (solid or liquid?) | solid |
| Which of Earth's 4 layers has the most pressure? | inner core |
| We are standing on the _______________sphere. | litho- |
| Convection currents happen in the _______________sphere. | astheno- |
| What rock makes up most of the ocean crust? | basalt |
| What rock makes up most of the continental crust? | granite |
| ________________ crust FLOATS on top of _____________ crust. | continental oceanic |
| __________________ boundaries are found where plates collide. | convergent |
| ___________________ boundaries are found where plates pull apart. | divergent |
| ____________________ boundaries are found where plates slide horizontally past each other. | transform |
| List the 3 types of plate boundaries. | convergent, divergent, transform |
| Sea-floor spreading (like in the middle of the Atlantic Ocean) forms at _________________ boundaries. | divergent |
| Rift Valleys (like the Great Rift Valley in Africa) form at ______________ boundaries. | divergent |
| ________________________ form when 2 continents collide. | (folded) mountains |
| ____________________ form when two ocean plates collide. | island (arcs) |
| What 2 things form when an ocean plate collides with a continental plate? | trench and inland volcanoes |
| Who came up with the theory/hypothesis about Pangaea? | Alfred Wegener |
| The San _______________________ _______________ is found in California, where the Pacific Plate and North American Plate meets. | Andres Fault |
| The ______________________________________ is found at the edge of the Pacific Ocean, where most of the Earth's earthquakes and volcanoes happen. | Ring of Fire |
| Where does NEW ocean crust form? | mid ocean ridge |
| That forms at a subduction zone? | trench |
| What caused the Himalayas (folded mountains) to form? | 2 continental plates collide (converge) |
| Where are most earthquakes and volcanoes formed? | at plate boundaries (esp Ring of Fire) |
| Which lithospheric plate is Atlanta, GA on? | North American |
| What causes a tsunami? | strong underwater earthquake |
| What are the 3 types of volcanoes? | 1. shield, composite, cinder OR 2. active, dormant, extinct |
| What do scientists think make tectonic plates move (Wegener did NOT know about these?) | convection currents (in asthenosphere) |
| What tectonic plate is Hawaii on? | Pacific |
| Hawaii is not on a plate boundary. They have volcanoes because Hawaii is a ___________ ___________. | hot spot |
| What volcanic island has formed in the middle of the Atlantic Ocean because of build up at the mid-Atlantic ridge? | Iceland |
Created by:
mtl19660
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