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Science Techtonics
Plate tectonics, earthquakes and voolcanoes
| Question | Answer |
|---|---|
| The hawaiian Islands are | A quiet eruption and a shield volcanoe |
| The "Ring of Fire" can be found in which ocean | Pacific |
| The stickiness of magma is called | Viscosity |
| Which island sits on top of a big fault | Iceland |
| The sudden return of deformed rock to its original form is called | Elastic Rebound |
| Mt. St. Helen's eruption was considered a | Explosive eruptions and a composite volcanoe |
| The type of lava that is ropey in appearance is | Pahoehoe |
| An earthquake on the ocean floor may cause a | Tsunami |
| Boundary where two plates slide past and against each other | Transform Boundary |
| What is the highest intensity score using the modified Mercalli scale | xii |
| which type of volcano is Hawaii | Shield Volcanoe |
| Which of the following is not true about the mid ocean ridge | Sediments are thicker in the middle |
| Name two pieces of evidence to support continental drift | 1) The Continents appear to fit together 2) Fossils found on different side of oceans but could only be from one place 3) Plants found also on different side of oceans |
| The strength of an earthquake is its | Magnitude |
| Subduction zone form at this type of boundary | Convergent Boundary |
| Magma that is rich in magnesium and iron is called | Mafic |
| Scale that measures how far the rock moves and the rigid | Moment Magnitude |
| Magma that flows onto the earth | lava |
| Liquid rock that forms under earths surface | magma |
| What event might signal a volcanic eruption | Bulge on or around a volcano, change in earthquake patterns, smoke and dust coming out of the vent |
| What is a seismogram | A record produced by a seismograph |
| What is a seismograph | An instrument that record details of an earthquake |
| What is the focus depth | How deep (normally in km) the focus is |
| Scale that measures intensity | Modified Mercalli Scale |
| Where are earthquakes more likely to happen | Along faults. Along oceanic and continental plates |
| vent | opening in a volcano where volcanic material is emited. |
| Characteristics of the mid ocean ridge | Under water mountain range formed by plate tectonics |
| Sea floor spreading | The formation of new areas of oceanic crust |
| Lithosphere | outer ridge part of the earth. Made up of the crust and upper mantle |
| Evidence of plate boundaries | Earthquakes and volcanoes |
| Epicenter | Point on the earths surface directly above the focus of an earthquake |
| Seismic Wave | An elastic wave in the earth produced by an earthquake or other means |
| Hot spot | volcanicly active area of earths surface often far from a tectonic plate boundry |
| Mafic | Dark in color. Magma that is rich in Magnesium and iron |
| Felsic | Light in color. Made from felspar material. |
| Pyroclastic material | Fragments of rock that form during a volcanic eruption |
| Which has higher viscosity, Mafic or felsic | Felsic |
| Which is more explosive, Mafic or Felsic | Felsic |
| Information on the earthquake you researched | Prince William Sound: Magnitude - 9.2, lasted - 4.5 minuted, Focus - approximately 25 km beneath earths surface, Day - March 27,1964, Time - 5:36 pm. |
Created by:
Lilly1221
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