Science p. 144-164 Word Scramble
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Question | Answer |
How much of the Earth's crust do the continents make up? | 29-35% |
Name the 7 continents. | Africa, Antarctica, Australia, Europe, North America, South America |
Name the 5 major oceans | Arctic, Atlantic, Indian, Pacific, Southern |
What discovery did Wegener make that supported the theory of Continental Drift? | Identical fossils were found on the coasts of South America and Africa |
What is the theory of Continental Drift? | The theory that the continents can move apart from each other and have done so in the past |
What is tectonics? | The study of the movement and changes in the Earth's crust |
What is plate tectonics? | The lithosphere (crust) is divided into plates that float and move on the athenosphere (upper mantle) |
What is a convection current? | The flow of hot fluid in a circular pattern |
What is a plate boundary? | The point at which two plates touch each other |
What is a trench? | A deep underwater valley |
What is stress? | A force that causes the Earth's crust to change shape and/or volume |
Which type of boundary is the place where two plates meet and push together? | Convergent boundary |
Which type of boundary is the place where two plates pull apart? | Divergent boundary |
Which type of boundary is the place where two plates slide past each other horizontally? | Transform boundary |
Which type of boundary has compressional stress? | Convergent boundary |
Which type of boundary has tensional stress? | Divergent boundary |
Which type of boundary has shearing stress? | Transform boundary |
What discovery did Morley, Vine, and Matthews make that supported the theory of continental drift? | The magnetic poles in the rocks on different continents were constantly changing |
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