Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Plate Tectonics8
| Question | Answer |
|---|---|
| Seafloor spreading theory was proposed by: | Harry Hess |
| As Earth's plates move apart at some boundaries, they collide at others, forming a) mountains and volcanoes b) ocean basins c) strike-slip faults d) both a and b | both a and b |
| The youngest rocks in the ocean floor are located at: | mid-ocean ridges |
| The results of plate movement can be seen at: a)rift valleys b) plate boundaries c)both a and b | c) both a and b |
| The ______ are forming where the Indo-Australian plate collides into the Eurasian plate. | Himalayas |
| The presence of the same ____ on several continents supports the idea of continental drift. a)fossils b)rocks c)neither a nor b d)both a and b | d) both a and b |
| Continental drift occurs because of _________ ________. | seafloor spreading |
| The cycle of heating, rising, cooling, and sinking is called: | convection current |
| Oceanic plates are pushed down into the upper mantle in a _____________ _______. | subduction zone |
| The hypothesis that continents have moved slowly to their current locations is called | continental drift |
| Plates move apart at _____________ boundaries | divergent |
| Ocean floor rocks are older or younger than continental rocks? | younger |
| The alignment of iron-bearing minerals in rocks when they formed reflects the fact that Earth's ____________ ________ has reversed itself several times in its past. | magnetic field |
| The lack of an explanation for continental drift prevented many scientists from believing a single supercontinent called __________ once existed. | Pangaea |
| Scientists aboard the Glomar Challenger added to the evidence for the theory of seafloor spreading by providing ______________ | samples of rock from different locations |
| Where plates slide past one another, ________ occur. | earthquakes |
| The places between plates moving together are called: | convergent boundaries |
| Studying the ocean floor, scientists found rocks showing magnetic___________. | reversals |
| The poles currently run a)south to north b)north to south c) east to west d)west to east | a) south to north |
| The theory that describes Earth's crust and upper mantle as being broken into sections is called | plate tectonics |
| The theory of ______________ _______________ was shown to be correct by age evidence and magnetic clues. | seafloor spreading |
| ______________ _______________, occurring in the mantle, are thought to be the force behind plate tectonics. | convection currents |
| earth's plastic-like layer is the: | asthenosphere |
| Earth's ________________ move around on a special layer of the mantle | plates |
| The main lines of evidence for _______________ __________ are fossil, rock, and climate clues, and the theory of seafloor spreading | continental drift |
| The rigid part of the plates of the _________________ are made of oceanic crust or continental crust and upper mantle. | lithosphere |
| The name ___________ means "all land" | Pangaea |
| reptile, freshwater fossil supporting continental drift | mesosaurus |
| tropical plant fossil found on five different continents, including: antarctica and africa | glossopteris |
| The mountains in _________________ and _______________ are similar; thus, supporting continental drift | Appalachia and Greenland |
| Dutch mapmaker, who over 400 years ago noticed that the coastlines of South America and Africa had a puzzle-like fit | Abraham Ortelius |
| Alfred Wegener hypothesized continental drift. What was his nationality and profession? | German meteorologist |
| Harry Hess was a scientist at _________________ | Princeton University |
Created by:
nmike