| A | B |
|---|
| What are plates? | the lithosphere broken into separate pieces |
| What is a scientific theory? | a well-tested concept that explains a wide range of observations |
| The theory of plate tectonics states that | pieces of Earth's lithosphere re in slow motion, driven by convection currents in the mantle. |
| What does the theory of plate tectonics explain? | the formation, movement, and subduction of the Earth's plates. |
| What force is causing the movement of the plates? | convection currents in the mantle |
| What are faults? | breaks in Earth's crust where rocks have slipped past each other |
| What are the three kinds of plate boundaries? | divergent, convergent, and transform |
| What happens at a divergent boundary? | plates move apart |
| When a divergent boundary develops on land, what is formed? | rift valley |
| What happens at a convergent boundary? | two plates come together |
| What happens when 2 oeanic plates meet? | the denser plate subducts |
| What happens when an oceanic plate and a continental crustal plate collide? | the oceanic plate subducts and volcanoes form on the continental plate |
| What happens when 2 continental crustal plates collide? | the collision squeezes the crust into mighty mountain ranges |
| What happens at a transform boundary? | the two plates grind past each other |
| Geologists have evidence that before Pangaea existed, | other supercontinents formed and split apart over billions of years. |
| How long ago did Pangaea form? | about 260 million years ago |
| _____________ the _________. | Record the data. |
| Now that you have completed your experiment, you should ____________ the experiment many more times. | repeat |
| Eventually, if you can get the same results repeatedly and no one can prove your idea wrong, you may be able to develop your ____________ into a law. | theory |
