Science 7 period
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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| Volcano | A weak spot in earth's crust where molten material, or magma, comes to the surface.
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| Lava | When magma reaches the surface it's called this.
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| Magma | A molten mixture of rock-forming substances, gases, and water from the mantle is referred to as this.
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| Volcanic ash | Very small solid particles ejected from a volcano during an eruption.
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| Magma chamber | A large, underground pool of magma that is found beneath the surface of the earth.
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| Crater | A large, bowl-shaped cavity in the ground or on the surface of a planet or moon, typically one caused by an explosion or the impact of a meteor or other celestial body.
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| Vent | An opening in earth's surface from which molten material, as lava, steam or gas is emitted.
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| Pipe | A vertical conduit below a volcano in which magma has passed and that has become full with solidified magma, volcanic breccia, and fragments of older rock.
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| Lava flow | A stream or sheet of molten or solidified lava.
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| Ring of Fire | An area in the basin of the Pacific Ocean where a large number of earthquake and volcanic eruptions occur.
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| Element | A substance that cannot be broken down into other substances.
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| Viscosity | The physical properties of liquids ,called this,is the resistance of a liquid to flow. Depends on the silica content and temperature.
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| Silica | Made up of the elements oxygen and silicon, is one of the most abundant materials in Earth's crust.
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| Pahoehoe | A fast moving, hot lava that has low viscosity.
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| Aa | Lava that is cooler and slower-moving. It has higher viscosity than pahoehoe.
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| Compound | A substance made up of two or more elements that have been chemically combined.
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| Subduction | The sideways and downward movement of the edge of a plate of the earth's crust and mantle beneath the other plate.
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| Extinct | A volcano that is unlikely to ever erupt again.
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| Dormant | A volcano that is no longer active, but may become active again.
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| Active | A volcano that is erupting or showing signs that it will erupt soon.
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| Cinder cone volcano | When ash, cinders, bombs pile up around the vent which forms a steep, cone shaped hill or mountain.
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| Shield volcano | When thin layers of lava pour out of a vent and more layers of such lava build on the previous layer. This gradually build a wide, gently sloping mountain.
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| Composite volcano | Sometimes lava flows alternate with explosive eruptions of ash, cinders, and bombs. The alternating layers form a tall, cone-shaped mountain.
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| Caldera | A large hole formed when a volcano's magma chamber empties and causes the volcano to collapse.
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| Batholith | A mass of rock formed when magma cools inside the crust.
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| Lava plateau | Some eruptions of thin, runny lava flow out of cracks and travel a long distances before cooling and hardening. Over millions of years, the layers build up over a large area to form this.
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| Sill | A slab of rock that forms when magma squeezes between layers of rock.
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| Dike | A slab of rock that forms when magma forces itself across rock layers.
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| Hot-spring | A spring of naturally hot water, typically heated by geothermal energy.
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| Geyser | A fountain of hot water and steam that erupts from the ground.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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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.
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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