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Name ____________________________Period_____ CCA 26 Plate Tectonics 1. In the following boxes, draw arrows to represent the type of boundary listed above it. Under the arrows, show the direction of the convection currents in the mantle. Then write in the box the most common formation or event that would occur at that boundary. Convergent Continental Plates Convergent Cont/ Oceanic Plates Divergent Plates Transform Plates 2. Name 5 of Earth’s plates and then draw a circle around the oceanic plate/s that you name: ________________________________, _______________________________, _______________________, ______________________, _______________________ 3. We must often use models to represent real objects. An apple could be used to represent the layers of the Earth. Name 2 advantages and 4 limitations of using an apple as a model for Earth’s layers. Advantages – 1.___________________________________________________________ 2.___________________________________________________________ Limitations – 1. ___________________________________________________________ 2.___________________________________________________________ 3.___________________________________________________________ 4.___________________________________________________________ 4. What layer inside the mantle causes the plates to move? 5. Plates are just “pieces” of the ____________________________ (one of Earth’s layers). 6. Why does it occur in this layer and not the inner core? 7. Which of the Earth’s layers am I referring to when I say plates? 8. When continental plates collide, mountains can form. When continental and oceanic plates collide, volcanoes can form. What makes oceanic crust different for this event to occur? 9. Fill in another word or two words that mean the same as – Convergent - ______________ Divergent - ______________ Transform - ___________ 10. Name each layer of the Earth above and then describe its state of matter and relative density. 11. 11. Look at the balance on the left. The small rock has a mass of 6 grams. What is the mass of the large rock? 12. If these rocks were formed due to heat and pressure, what type of rock would they be? 13. What is the name of the large plate at the center of the Ring of Fire? 14. What occurs in this area? 15. Why is it called the Ring of Fire? 16. Chad measured the mass of a gray rock and found it to be 3 grams. The volume of the rock was 5 mL. He used these data to calculate the ____________ of the rock, which is _________. 17. You know that the density of water is 1.0 g / mL. Can you infer what type of rock the above rock is you calculate its density?____ What is it? ______________________