5 Written Questions
5 Matching Questions
- Convergent boundaries
- Radiometric dating
- What are plate tectonics?
- Why did they stop digging the deepest hole ever?
- What are the three types of faults?
- a Normal, reverse, strike/slip
- b Sinking slabs of oceanic crust subduct into mantle and increasing temperature and pressure creates magma that rises.
- c Temperatures were too high to go any furthur
- d The amount of the isotope in the object is compared to the amount of the isotope's decay products, object's approximate age can then be figured out using the known rate of decay of the isotope.
- e Scientific theory that describes movement of plates that cause earthquakes, volcanoes, and other natural geologic phenomenon.
5 Multiple Choice Questions
- The continents had once been joined to form a single supercontinent Pangea.
- When rocks are broken in two due to stresses, the two sides on either side of the crack move in opposite directions.
- The continents "fit" together
- Occurs when 2 plates grind past each other with no construction or destruction of the lithosphere.
Fault lines and earthquakes are associated with this.
- Can be intrusive, magma cools slowly inside of the Earth, made of larger grains.
Can be extrusive, lava cools rapidly on Earth's surface, fine grains with many air pockets.
5 True/False Questions
Tensional stress → Occurs when a rock is pressed inward
At what three places do volcanoes occur? → Shield, cinder cones, composite (stratovolcanoes)
Composite volcanoes (stratovolcanoes) → Large, symmetrical mountains that produce explosions of lava, pyroclastic flows and lahars.
Mechanism of Plate Tectonics → Plate movement is driven by convection currents in the mantle. The heat source is from radioactive isotope decay.
Metamorphic rock → Compaction is the squeezing of sediments.
Cementation is depositing tiny materials in tiny spaces among the sediments.