| A | B |
|---|
| How long did it take the continents to move into their current position? | Hundreds of millions of years |
| Where do ocean ridges most often form? | at a divergent boundary |
| Does a mountain allow magma, gas and ash to escape from inside Earth? | No |
| What is a large landform that forms peaks that stretch high above surrounding land | A mountain |
| Does the crust (lithosphere) get destroyed at plate boundaries that move toward each other or away from each other? | plates that move toward each other |
| Does the crust (lithosphere) get created at plate boundaries that move toward each other or away from each other? | plates that move away from each other |
| What landform can form at a convergent boundary? | mountain range, volcano, deep ocean trenches |
| What is the transfer of heat by movement of fluid called? | convection |
| What is another word for information that helps prove something to be true? | evidence |
| What type of boundary is also called a conservative boundary because crust is neither created nor destroyed? | transform |
| What happens at a convergent boundary? | two plates move towards each other |
| How can tectonic plates move? | towards each other, away from each other, slide past each other |
| What does the continental drift theory explain? | the movement of the tectonic plates and the continents |
| According to Alfred Wegner, the continents used to be joined together as one supercontinent known as___________. | Pangaea |
| What is the difference between a convergent boundary and a divergent boundary? | At a convergent boundary, plates move towards each other and crust is destroyed. At a divergent boundary, plates move away from each other and new crust is created. |
| What causes the movement of tectonic plates? | Uneven heating of the Earth's surface |
| What type of evidence is associated with similarities in rock, mineral and natural resource location and composition? | geology evidence |
| What type of evidence is associated with similarities in fossil location and dating? | fossil evidence |
| What is a tectonic plate? | A large slab of Earth's crust or lithosphere |
| Approximately how fast does the Mid-Atlantic Ridge spread each year? | 2.5 centimeters |
| What happens at a divergent boundary? | crust is created |
| What is a volcano? | A volcano is a rupture in Earth's crust through which magma, gas and ash can escape. |
| Where does sea floor spreading occur at? | A divergent boundary |
| In what layer of Earth does convection take place? | asthenosphere |
| What form of evidence is matching rocks and minerals found on separate continents? | Geologic evidence |
| What is sea floor spreading? | The creation of new crust or lithosphere |
| What types of evidence are used to help prove the Theory of Continental Drift? | Landform evidence, Geologic Evidence, and Fossil Evidence |
| Where hot mantle rises, tectonic plates ___________________. | diverge |
| Where cool mantle sinks, tectonic plates _____________. | converge |
