Survey
* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project
Q: Name the different layers of the earth from the centre outwards. A: Inner core / outer core / mantle (lower and asthenosphere – upper) / Crust/ Lithosphere Q: What are the 8 main tectonic plates? A: North American Plate/ South American Plate/ Nazca Plate/ African Plate/ Pacific Plate/ Indo-Australian Plate / Eurasian Plate/ Antarctic Plate. Q: How many types of plate margin are there and what are they called? A: Three plate margins (constructive/ destructive / conservative). Q: Give an example of a feature found at a constructive plate margin. A: Mid Oceanic ridge / shield volcano. Q: Give an example of a feature found at a destructive plate margin? A: Fold mountains / composite volcanoes /oceanic trenches. Q: What event occurs at conservative plate margins and give an example you have studied. Q: What are tectonic plates? A: The Earths crust is broken down into large slabs called plates which float on top of the mantle. Q: What is a plate boundary / plate margin? A: Where two plates meet. Q: What is a constructive plate margin? A: Where two plates move apart from each other, creating new land. Q: What is a destructive plate margin? A: Where two plates move towards eachother. Q: What is a conservative plate margin? A: Where the plates move parallel to each other, the earths crust is not created or destroyed. Q: What forces the Earths plates to move? A: Convection currents in the mantle. A: earthqukes: Kobe, Japan / Bam Iran Q: How many different types of plates are there, and what are they called? Q: Describe two features of an oceanic plate? A: Two: Oceanic and continental. A: Oceanic plates are: Young / dense basalt / thinner plate. Q: Describe two features of a continental plate? Q: What is a fold mountain? A: Continental plates are: Older / thick plates/ less dense. Q: Name the case study for a fold mountain you have studied, and describe its location? A: The Alps in Europe, caused by the African plate moving north into the Eurasion plate. Q: Name the human uses of the Alps mountain range. A: Hydro-electric power / mining / Farming / Forestry / Tourism. Q Q: What three problems do people face in the Alps mountain range? A: Poor soils / Steep slopes / Poor communication. A: A fold mountain occur where tectonic plates collide and fold upwards. Q: Describe the formation of the Alps? A: Q: How are fold mountains suitable for HEP? A: Relief rainfall means that there is enough water to sustain the dam / Steep river valleys make building a dam easier and cheaper / Steep sided so there will be high amounts of surface runoff, and summer melt water. Q: Name a source of tourism in the Alps? A: The various ski resorts such as Chamonix in France. Q: Why does the Alps have poor soils? A: They are thin soils which are highly weathered / Leaching occurs which means that nutrients are washed down slope. Q: Why are there problems with communication in the Alps? Q: Name and describe a way people in the Alps have adapted to poor soils? A: Steep slopes and high altitude mean that infrastructure is poor and expensive to construct. A: Farm crops and cattle in the valleys, use the steep slopes for sheep and goats who can cope with the slope angles and colder climate. Q: Describe one way in which people have adapted to steep slopes in the Alps? Q: How does terracing make farming easier in the Alps? A: Terracing creates a series of flat platforms which allow easier sowing and harvesting of crops / reduce leaching and poor water supply as water is trapped on each level/ increases the amount of nutrients found in the soil. Q: How have communications been developed in the Alps? A: The use of building techiques such as tunneling, viaducts, bridges and zig zags. Q: Which two types of volcano have you studied and give an example of each? A: Composite – Mount St Helens. Shield – Mauna Loa Q: Describe the key features of a composite volcano? A: Explosive and infrequent eruptions/ High, steep sided volcano / Made of alternating layers of ash and lava / The lava has a high viscosity (thick so cools quickly creating steep sides). A: Mont Blanc Tunnel this goes through the mountain therefore shortening the journey for people. Q: Describe how the railways have been adapted for poor communications and steep slopes? A: The use of viaducts and zigzags have meant that this train is able to run effectively at high altitudes. Q: Which volcano is found on a destructive plate margin, give an example with the names of the plates. A: Composite volcano: Mount St Helens – Juan de Fuca Plate and the North American Plate. Q: Describe the key features of a shield volcano? A: Sloping sides caused by low viscosity lave (runny so travels further before it cools) / low flat volcano / layers of lava / Non –explosive and frequent eruptions Q: What signs does a volcano give off that it is about to erupt? A: Earthquakes / changes in the shape e.g. bulges / escaping gas e.g. CO2. Q: What causes earthquakes? A: The tension that builds up on all three types of plate margins. Q: What are the two types of shockwaves which are sent out? Q: Where are the shockwaves felt more strongly during an earthquake? A: p and s waves. A: The points closest to the source of the earthquake at the focus. Q: What is the name of the point on the surface which is directly above the source of the Earthquake? Q: What is the name of the source of the earthquake? A: The focus A: The Epicenter. Q: What are the names of the scales you have studied which are used to measure earthquakes? Q: Which scale used to measure earthquakes uses a logarithmic scale to measure the intensity of the shockwaves? A: Mercalli and Richter Q: Which scale used to measure earthquakes uses roman numerals to show the damage done? A: Richter Scale. Q: Which plate boundaries can earthquakes occur on? A: Mercalli scale. A: Constructive/ destructive and conservative. Q: Name three differences between the Mercalli and the Richter scale. Q: What is a Tsunami? A: The Richter scale measures the amount of energy released in the shockwaves WHEREAS the Mercalli scale measures the damage done by the earthquake. Mercalli – uses surveys based on observations and opinion WHEREAS Richter scale uses a seismometer. Mercalli uses roman numerals I – XII whereas Richter has logarithmic scale. A: A tsunami is a series of very large waves caused when large amounts of water are displaced, mostly when there is an under water seismic event e.g. earthquake. Q: Name three social effects of the JapaneseTsunami? Q: Give an example of an earthquake you have studied in an MEDC? A. 23 000 people killed / whole towns and villages were destroyed, loss of power/electricty A: Tohoku, Japan 2011. Q: Give an example of an earthquake you have studied in a LEDC? Q: What is an ocean trench and where are they found? A: Haiti, 2010. A: Very deep sections of the ocean floor where the oceanic plate subducts underneath the continental plate at a destructive plate margin. Q: What is a supervolcano, and give an example of one you have studied? Q: Where do supervolcanoes form? A: A volcano which forms under the Earth’s crust, Yellowstone Park. A: Form close to destructive plate margins or at hotspots. Q: What is a Caldera? Q: What is the VEI? A:A volcanic depression formed when a super volcano erupts . A: Volcano explosivity index, I is a scale which measures the amount of material erupted from the volcano 1-8 where 8 is a supervolcano). Q: What are the main differences between a volcano and a supervolcano? A: Scale of eruption:Normal local/national scale (<7 on VEI) SV= global scale (8 on VEI) Structure: caldera/crater, cone / magma reservoir under Earths crust Frequency of eruption: often / very rare .