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SRB Science Final
A review for our science final at SRB
| Question | Answer |
|---|---|
| What would you expect after an explosive eruption? | darkened skys |
| What does acinder cone volcano have? | steep slopes |
| What is a extinct volccano? | a volcano that will probably never erupt agian |
| How are volcanoes created? | repeated eruptions of lava |
| Where are volcanoes most likely to form? | along plate boundarys |
| What would you expect after a noneplosive eruption? | huge lava flows |
| Where does molten rock often gather? | magma chamber |
| If the water content is high what is likley to happen? | an explosive eruption |
| What type of lava flows most like dripping wax? | pahoehoe |
| What type of lava is forms in jumbled heaps of sharp chunk near the vent? | Blocky lava |
| What type of pyroclastic material means little stones? | Lapilli |
| What is the pryoclastic material that can reach the upper atomsphere that circles the earth for years? | Volcanic ash |
| Describe a possible climate change caused by a volcanic eruption? | Ash blocks the sunlight causing temperature to drop. |
| When rock begins to melt... | temperature and pressure decreases |
| What type of volcane will likely erupt in the near future? | active volcano |
| what does a tiltometer measure? | change in the volcanos slope |
| Where is a volcano likely to form? | along plate boundarys |
| Lava theat has liquid runny consistency probably... | has a low silica content |
| Volcanic activity along the Mid-Atlantic Ridge. This activity occurs at | a divergent boundary |
| Which of the following is NOT considered when predicting volcanic eruptions? | atmospheric activity |
| How are volcanoes created? | by many eruptions of lava |
| What is most likely to happen if the water content is high in magma? | an explosive eruption |
| What is a rift? | a crack in the earths crust |
| Mount Rainier and Mount St Helens are... | composite volcanoes |
| How do scientists classify pyroclastic material? | by size |
| Which type of volcano will never erupt agian? | extinct |
| What does subduction mean | when continental crust slides under oceanic crust |
| what is the term given to the temperature at wich condesation forms? | Dew point |
| What is the term given to stratus clouds that are found at a very low level? | fog |
| Where does a continental polar air mass form? | North Canada |
| Does a anticyclone have high or low pressure? | high |
| Does a cyclone have high or low pressure? | low |
| What are the most powerful storms on earth? | hurricanes |
| Which part of the hurricane has warm calm air and light winds? | THE eye |
| A thunderstorm is most likley created by what type of cloud? | cumulonimbus |
| What instument measures air pressure? | barometer |
| when you see weather systems on the news where do they come from? | weather sattelights |
| On a station modle what does the tail off the circle reprsent? | wind speed and direction |
| What do tetonic plates consist of? | continental and oceanic crust |
| Wegner thought that all thecontinents were once together in one large continent called? | Pangea |
| Evidence for sea-floor spreading has come from? | magnetic minerals on the ocean floor |
| A possible result of plates moving along a trnsform boundary is? | earthquakes |
| What is the outermost layer of the Earth called? | lithospere |
| What type of fault usually occurs because of compression? | reverse |
| In a reverse fault,where does the hanging wall move realitive to the footwall? | upward |
| In a normal fault, where does the hanging wall move relative to the footwall? | downward |
| What kind of force can lead to mountians with sharp,jagged peaks? | tension |
| What type of boundary is formed when plates seperate? | divergent |
| What doees NOT provide evidence for continental drift | oceanic plate theory |
| The consists of mostly of what? | iron |