| A | B |
|---|
| Science can be done in... | the field or in the laboratory |
| empirical evidence | all of the observations collected in an investigation (another term for data) |
| Alfred Wegener | meteorologist known for continental drift. |
| continental drift | Wegner's idea that the continents had been together and moved apart |
| evidence for continental drift | fossils and continents looking like pieces of a puzzle |
| hypothesis | prediction following collection of background information |
| fossils | traces or remains of a once living organism |
| How and where did Wegener die? | In Greenland during a blizzard |
| Ring of Fire | The area around the Pacific Ocean where volcaoes & earthquakes are common |
| sea-floor spreading | process by which new oceanic crust is formed when a divergent boundary allows magma to rise and create a mid-ocean ridge |
| Theory of Plate Tectonics | the theory that explains how large pieces of the lithosphere move |
| convergent boundary | plates collide |
| divergent boundary | plates divide or pull apart |
| transform boundary | plates slide or glide past each other |
| Convergent boundary on land | forms mountains |
| convergent boundary between oceanic and continental plates | results in subduction of the denser oceanic crust and a deep ocean trench |
| Subduction results in what geologic event? | volcanoes |
| divergent boundaries on land | form rift valleys |
| divergent boundaries under the ocean | form mid-ocean ridges |
| transform boundaries result in | earthquakes |
| What happens to the crust in a convergent boundary? | It is destroyed or it changes shape |
| What happens to the crust in a divergent boundary? | crust can be created |
| What happens to the crust in a transform boundary? | It is neither created nor destroyed |
| theory | an explanation of what science knows about a topic |
| law | a statement of what will happen in certain situations |
| How does scientific knowledge change? | with new evidence or from looking at old evidence in a new way |
| collaboration | scientists working together |
| debate | scientists offering different conclusions, often in an argumentative style |
| Pangaea | the super continent that broke apart |
| name that means "all Earth" | Pangaea |
| tectonic plates | another name for lithospheric plates |
| mechanism that drives continental movement | convection current in mantle |
| convection current | movement of matter due to density differences |
| rift valleys can fill with water | and create new seas |
| Which is thinner? Continental crust or oceanic crust? | oceanic crust |
| Which is more dense? Continental crust or oceanic crust? | oceanic crust |
| Which is cooler? New oceanic crust at a mid-ocean ridge or old oceanic crust? | old oceanic crust |
| Which is denser? New oceanic crust at a mid-ocean ridge or old oceanic crust? | Old oceanic crust is denser, because it is cooler |
| Why didn't Continental Drift become a theory? | He didn't know the mechanism that caused the plates to move |
| Mechanism Harry Hess realized after Wegener died? | Convection currents in the mantle move the plates |
| When the fossils of the same organisms are found on totally different continents, it is evidence of what? | All the continents once were part of the same, big, landmass |
