Science 7th
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Earthquake | Energy waves passing through Earth, Shift in fault line, Volcanic activity.
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| Crust | Outer most, Rocky layer of Earth.
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| fault | Crack within Earths crust layer
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| mantle | Earths layer below the crust
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| lithosphere | outer most layer of earths layer that is rocky and solid
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| plates | one piece of earths crust
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| seismologist | a scientist who studies earthquakes
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| epicenter | the point on the earth's surface vertically above the focus of an earthquake.
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| Seismic waves | an elastic wave in the earth produced by an earthquake or other means.
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| p-waves | P-waves are a type of elastic wave, called seismic waves in seismology, that can travel through a continuum. The continuum is made up of gases, liquids, or solids, including the Earth. P-waves can be produced by earthquakes and recorded by seismographs
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| s-waves | A type of elastic wave, the S-wave, secondary wave, or shear wave is one of the two main types of elastic body waves, so named because they move through the body of an object, unlike surface waves.
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| surface waves | In physics, a surface wave is a mechanical wave that propagates along the interface between differing media, usually two fluids with different densities. A surface wave can also be an electromagnetic wave guided by a refractive index gradient.
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| seismograph | an instrument that measures and records details of earthquakes, such as force and duration.
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| magnitude | the great size or extent of something.
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| richter scale | a numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations.
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| mercalli scale | a scale formerly used to describe the magnitude of an earthquake
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| moment magnitude scale | a logarithmic scale of 1 to 10
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| tsunami | a long high sea wave caused by an earthquake, submarine landslide, or other disturbance.
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| leiquefaction | the conversion of a solid or a gas into a liquid
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| aftershock | a smaller earthquake following the main shock of a large earthquake.
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| Base Isolators | building attached to its foundation to prevent damage
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| shear core walls | braced panels in the wall line using structural plywood sheathing with specific nailing at the edges and supporting framing of the panel.
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| tension ties | connecting walls and floors to prevent damage
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| cross braces | wood panels making an x on a wall to prevent damage
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| mass dampers | a device mounted in structures to reduce the amplitude of mechanical vibrations.
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| flexible pipe | a pipe that lets energy go through it and as it goes through it bends to prevent damage.
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| lithosphere | outermost shell of a rocky planet defined on the basis of the mechanical properties.
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| Tension | the state of being stretched tight.
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| compression | the action of compressing or being compressed.
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| shearing | break off or cause to break off, owing to a structural strain.
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| plateau | an area of relatively level high ground
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| normal fault | an inclined fault in which the hanging wall appears to have slipped downward relative to the footwall
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| reverse fault | thrust fault: a geological fault in which the upper side appears to have been pushed upward by compression
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| strike slip fault | a fault in which rock strata are displaced mainly in a horizontal direction, parallel to the line of the fault.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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