File
... light with a density 2.6 times that of water, it also has a lot of Silicon. Oceanic crust is called basalt which is a dark rock which has cooled quickly so has small cristals. It has a high density of 2.9 as it has dense minerals in it. How many marks would you give the answer above and why? What wo ...
... light with a density 2.6 times that of water, it also has a lot of Silicon. Oceanic crust is called basalt which is a dark rock which has cooled quickly so has small cristals. It has a high density of 2.9 as it has dense minerals in it. How many marks would you give the answer above and why? What wo ...
Essay Question Outline
... • Over Time: Continents drifted apart creating Gondwanaland and Laurasia, then Laurasia broke apart into North America, Europe and Asia. Then Gondwanaland broke into Africa, South America, Antarctica and Australia. Then India collided with Eurasia. Continents continue to drift apart due to the conve ...
... • Over Time: Continents drifted apart creating Gondwanaland and Laurasia, then Laurasia broke apart into North America, Europe and Asia. Then Gondwanaland broke into Africa, South America, Antarctica and Australia. Then India collided with Eurasia. Continents continue to drift apart due to the conve ...
Plate Tectonics and volcanoes
... deeper in the water it pushes down more • Rock weighs more than water – – water has a mass of 1000 kg/m3 – rock has a mass of ~3000 kg/m3 ...
... deeper in the water it pushes down more • Rock weighs more than water – – water has a mass of 1000 kg/m3 – rock has a mass of ~3000 kg/m3 ...
Wegener—Continental Drift
... • A. Sonar and magnetometers mapped the ocean floor and detected magnetic striping. • B. Satellites created communication networks for scientists on other continents. • C. Computer systems were used to simulate tectonic patterns on other planets. • D. Seismometers were developed to accurately measur ...
... • A. Sonar and magnetometers mapped the ocean floor and detected magnetic striping. • B. Satellites created communication networks for scientists on other continents. • C. Computer systems were used to simulate tectonic patterns on other planets. • D. Seismometers were developed to accurately measur ...
Plate Tectonics and Igneous Activity
... motions provide the mechanisms by which mantle rocks melt to generate magma When an oceanic plate sinks under another plate, it brings water and rock along with it. When that plate reaches a depth of ~100-150 km, and melting begins. The magma will then migrate to form either volcanic island arcs ...
... motions provide the mechanisms by which mantle rocks melt to generate magma When an oceanic plate sinks under another plate, it brings water and rock along with it. When that plate reaches a depth of ~100-150 km, and melting begins. The magma will then migrate to form either volcanic island arcs ...
Final Rev Guide Earthqk Volcanoes Plate Tect
... plate boundary existed for these to form? ______________. What force The Andes Mountains in South America were formed from a ______________ plate boundary between ocean and continent. ...
... plate boundary existed for these to form? ______________. What force The Andes Mountains in South America were formed from a ______________ plate boundary between ocean and continent. ...
Chapter 9
... time. This is anywhere from 200 to 3,000 years, depending on the region. Dormant if it is not currently active, but could become so. Extinct when scientists consider it unlikely to erupt again. ...
... time. This is anywhere from 200 to 3,000 years, depending on the region. Dormant if it is not currently active, but could become so. Extinct when scientists consider it unlikely to erupt again. ...
Final Jeopardy
... Quakes & Volcanoes: $500 • What is the correct order for the arrival of seismic waves when reading a seismograph? • Hint! There are 3 types of waves! ...
... Quakes & Volcanoes: $500 • What is the correct order for the arrival of seismic waves when reading a seismograph? • Hint! There are 3 types of waves! ...
Plate Tectonics Unit Study Guide
... 4. Compare and contrast the Richter scale and the Modified Mercalli Scale on how they measure an earthquake’s magnitude. ...
... 4. Compare and contrast the Richter scale and the Modified Mercalli Scale on how they measure an earthquake’s magnitude. ...
Plate Tectonic Booklet (test make up)
... What layer of Earth has convection currents? What effect do convection currents have on Earth’s crust? Continental Drift List Alfred Wegener’s evidence for his Continental Drift Theory What is the name if the super-continent, how long ago was it? Convergent Boundaries (Subduction and Collisi ...
... What layer of Earth has convection currents? What effect do convection currents have on Earth’s crust? Continental Drift List Alfred Wegener’s evidence for his Continental Drift Theory What is the name if the super-continent, how long ago was it? Convergent Boundaries (Subduction and Collisi ...
Volcanoes
... Igneous rocks are mixtures of minerals Melting occurs over a range of temperatures Produces a magma with a higher silica content than the original rock ...
... Igneous rocks are mixtures of minerals Melting occurs over a range of temperatures Produces a magma with a higher silica content than the original rock ...
Tectonic Impacts #3
... eruptions are mainly mafic Eruptions are mainly intermediate. Some mafic magma. Felsic magma. Plutons None. plutons Mafic lava produces basalt. Felsic lava form rhyolite Mafic lava erupts ...
... eruptions are mainly mafic Eruptions are mainly intermediate. Some mafic magma. Felsic magma. Plutons None. plutons Mafic lava produces basalt. Felsic lava form rhyolite Mafic lava erupts ...
volcano
... • Nonexplosive eruptions are the most common type of volcanic eruptions. These eruptions produce relatively calm flows of lava in huge amounts. • Vast areas of the Earth’s surface, including much of the sea floor and the Northwestern United States, are covered with lava form nonexplosive eruptions. ...
... • Nonexplosive eruptions are the most common type of volcanic eruptions. These eruptions produce relatively calm flows of lava in huge amounts. • Vast areas of the Earth’s surface, including much of the sea floor and the Northwestern United States, are covered with lava form nonexplosive eruptions. ...
Wegener—Continental Drift
... • A. Sonar and magnetometers mapped the ocean floor and detected magnetic striping. • B. Satellites created communication networks for scientists on other continents. • C. Computer systems were used to simulate tectonic patterns on other planets. • D. Seismometers were developed to accurately measur ...
... • A. Sonar and magnetometers mapped the ocean floor and detected magnetic striping. • B. Satellites created communication networks for scientists on other continents. • C. Computer systems were used to simulate tectonic patterns on other planets. • D. Seismometers were developed to accurately measur ...
Geologic Time and the Fossil Record
... We know that volcanoes form above magma pockets and that they frequently occur near subduction zones between converging tectonic plates. But what is a volcanic eruption? An eruption is said to occur whenever molten magma from within/beneath the volcano breaks through the surface. They can be explosi ...
... We know that volcanoes form above magma pockets and that they frequently occur near subduction zones between converging tectonic plates. But what is a volcanic eruption? An eruption is said to occur whenever molten magma from within/beneath the volcano breaks through the surface. They can be explosi ...
Plate Tectonics and Astrobiology
... What does plate tectonics have to do with astrobiology? Plate Tectonics refers to the very slow (few cm per year) movement of ‘plates’ of planetary crust across the surface of the Earth, as well as the effects produced at the boundaries of these adjacent plates. It is fundamentally caused by the sti ...
... What does plate tectonics have to do with astrobiology? Plate Tectonics refers to the very slow (few cm per year) movement of ‘plates’ of planetary crust across the surface of the Earth, as well as the effects produced at the boundaries of these adjacent plates. It is fundamentally caused by the sti ...
Geology Papers Introduction to the Geology of the Mount Shasta
... sediment that have been folded and faulted into their present positions. To the east stand Mt. Shasta and several lesser peaks of the Cascade range that have been built by flows of lava and ash. As different as these two ranges are, both are the results of the same geologic process: subduction. The ...
... sediment that have been folded and faulted into their present positions. To the east stand Mt. Shasta and several lesser peaks of the Cascade range that have been built by flows of lava and ash. As different as these two ranges are, both are the results of the same geologic process: subduction. The ...
File - Flipped Out Science with Mrs. Thomas!
... He could not identify the force that moves the tectonic plates ...
... He could not identify the force that moves the tectonic plates ...
Earth`s Changing Surface Review
... He could not identify the force that moves the tectonic plates ...
... He could not identify the force that moves the tectonic plates ...
Volcano
A volcano is a rupture on the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.Earth's volcanoes occur because its crust is broken into 17 major, rigid tectonic plates that float on a hotter, softer layer in its mantle. Therefore, on Earth, volcanoes are generally found where tectonic plates are diverging or converging. For example, a mid-oceanic ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates pulling apart; the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates coming together. Volcanoes can also form where there is stretching and thinning of the crust's interior plates, e.g., in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande Rift in North America. This type of volcanism falls under the umbrella of ""plate hypothesis"" volcanism. Volcanism away from plate boundaries has also been explained as mantle plumes. These so-called ""hotspots"", for example Hawaii, are postulated to arise from upwelling diapirs with magma from the core–mantle boundary, 3,000 km deep in the Earth. Volcanoes are usually not created where two tectonic plates slide past one another.Erupting volcanoes can pose many hazards, not only in the immediate vicinity of the eruption. One such hazard is that volcanic ash can be a threat to aircraft, in particular those with jet engines where ash particles can be melted by the high operating temperature; the melted particles then adhere to the turbine blades and alter their shape, disrupting the operation of the turbine. Large eruptions can affect temperature as ash and droplets of sulfuric acid obscure the sun and cool the Earth's lower atmosphere (or troposphere); however, they also absorb heat radiated up from the Earth, thereby warming the upper atmosphere (or stratosphere). Historically, so-called volcanic winters have caused catastrophic famines.