A Think-Pair-Share Assessment

1. A Think-Pair-Share Assessment • Best procedures: read quietly to yourself (so you don’t give any subconscious clues) • As the instructor, we read it too, for timing, then ask if anyone needs more time • If not, it’s time to vote simultaneously—use your fingers, right in front of your chest so others don’t see (anonymous) Igneous rocks can form from • an igneous rock that has partially melted • metamorphic rocks under intense pressure • sedimentary rocks that vaporized during an impact • All of these • None of these

2. Another Which types of rocks can have layers? • Metamorphic and sedimentary • Sedimentary • Sedimentary and igneous • Sedimentary, igneous, and metamorphic

3. Which are most likely to be sedimentary rocks? • Large smooth stones on a beach • Layers of rocks that have been uplifted and cut through by a river • Young rocks formed inside the floor of a wet cave • All of these • None of these

4. What happens to slate (a metamorphic rock) when it’s exposed to heat and pressure? • It changes to a higher grade of metamorphic rock with larger minerals • It gets flatter and denser but looks and stays the same type of rock • It melts and forms new minerals • All of these

5. Where are we most likely to find metamorphic rocks? In abyssal plains on the ocean floor In a river valley cutting through a very eroded mountain At the tops of young mountains formed during continental collisions In the middle of a deposit of cooled lava

6. Where are we most likely to find igneous rocks? • At the tops of young mountains formed during continental collisions • In an island arc formed next to a subduction zone • Along a transform boundary on a continent • All of these • None of these