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
GeologyTestNumeroDos
Volcanoes and other junk
| Question | Answer |
|---|---|
| What makes up the Lithosphere? | Tectonic plates |
| The Lithosphere contains the... | Upper mantle and crust |
| What does LVZ stand for? | Low Velocity Zone |
| What is the Low Velocity Zone? | The boundary between the Lithosphere and the Asthenosphere. |
| What is the Asthenosphere? | The mantle BELOW the LVZ |
| What are the 3 types of Boundaries? | Divergent, Convergent, and Shear zone |
| What is a divergent boundary? | Where two tectonic plates move apart. |
| What is a convergent boundary? | Where two tectonic plates come together. |
| What is a shear zone? | Where two tectonic plates slide past one another. |
| How can a continent become an ocean? | Hot spots located in the Asthenosphere, burn through the Earth's crust causing the continent above to crack and separate. Over time, this crack becomes filled with water and widens to form a LINEAR SEA. Eventually, an ocean is formed. |
| How old is the Atlantic Ocean? | 150 years old |
| How are mid-ocean ridges formed? | From hot spots and friction |
| Which is denser? Continental plates or Oceanic plates? | Oceanic |
| What is the density of a continental plate? | 2.6 gm/cc |
| What is the density of an oceanic plate? | 3.0 gm/cc |
| What is a continental collision? | Where 2 continental plates collide |
| What is an oceanic collision? | Where 2 oceanic plates collide |
| Subduction means... | volcanic activity |
| A line of volcanoes is called? | Volcanic Island Arc |
| How were the Appalachian Mountains formed? | The continental collision between North America and Africa |
| How were the Himalayas formed? | The continental collision between India and Asia |
| Where does most of the 'action' occur in plate tectonics? | Plate boundaries |
| 'Action' also occurs in the middle of tectonic plates. This is called? | Intra-plate activity |
| When were good maps available? | year 1900 |
| Who discovered "Continental Drift"? | Alfred Wegner |
| When was sonar invented? | During WWI |
| Why was sonar invented? | To measure the depths of the ocean floor |
| When were magnetometers invented? | During WWII |
| Why were magnetometers invented? | To measure changes in the Earth's magnetic field |
| What are inversion layers? | Temperature change which could not be penetrated using sonar |
| Where are 'Magnetic Stripe Patterns' found? | On either side of mid-ocean ridges |
| How were seismographs used during the Cold War? | They were used to detect underground nuclear explosions |
| In the late 1950's, __________ was used to determine the age of the ocean floor. | Deep Sea Drilling |
| 200-300 millions of years ago, there was 1 __________, and 1 ______ | Continent and ocean |
| The name of the continent from 200-300 million years ago was called? | Pangea |
| The name of the ocean from 200-300 million years ago was called? | Panthalasia |
| A hot spot burned through Pangea and split the continent into 2. These continents were called? | Laurasia and Gondwana |
| The sea between Laurasia and Gondwana was called? | Tetheas Sea |
| The future of tectonic plates: Atlantic ocean will ______; Pacific ocean will _____; Baja California will __________; and Australia will_________. | Atlantic:Will widen Pacific:Will shrink Baja California:Will be an island off of Canada Australia:Will move very fast NE |
| What is a rock? | Consolidated mixture of one or more minerals |
| Three types of rocks: | 1. Igneous, 2. Sedimentary, 3.Metamorphic |
| What are igneous rocks? | Formed from molten material. Fragments weld together when cooled |
| What are sedimentary rocks? | liquified --> compression and cementation |
| What are metamorphic rocks? | Altering an existing rock |
| Mineralogy classification: | Felsic and Mafic |
| What is felsic | light colored minerals |
| What is mafic | dark colored minerals |
| Texture classification: | Coarse grained and fine grained |
| Fine grained: | are cooled fast |
| Coarse grained: | are cooled slowly |
| Extrusive means | on the surface |
| Intrusive means | below the surface |
| Felsic Volcanic Eruptions | lower temp, yet more explosive |
| Mafic Volcanic Eruptions |
Created by:
518763532
Popular Earth Science sets