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Terms in this set (41)
A cloud of dust and gas.
the explosive end of a very large star
A force that attracts objects towards each other.
An action of rotating about an axis or centre.
two atomic nuclei joining to make a large nucleus to make energy.
The conversion of a gas to a liquid.
a structure formed by matter falling into a gravitational force such as a black hole.
the effect on a planet or moon after a high velocity smaller mass collides with it.
a piece of rock or metal that has fallen to a planet or moons surface from outer space.
the process of shrinking.
can travel through only solids, it is the secondary type of waves but can travel through the plastic mantle, as it acts like a solid. CAN NEVER TRAVEL THROUGH A LIQUID.
Primary source of waves, can travel through both a solid and a liquid but slower through a liquid.
the outermost layer of a planet.
Mantle is like a plastic but acts like a solid, located just below the crust.
fluid layer composed mostly of iron and nickel which lies above the earths inner core.
Solid core at the center of the earth. There is enough heat in the core which rises up to a cooler area.
shock waves produced by earthquakes.
German scientist who proposed the theory of continental drift in the early 20th century.
Ring of Fire
major area in the pacific ocean where a large number of earthquakes and volcanic eruptions occur.
The theory that the earth's outer shell is divided into several plates that glide over the mantle and move apart, causing earthquakes and continental shift. (approximately 12-17)
the process by which an unstable atomic nucleus loses energy by admitting
the cycle in which hot magma plumes rise up to the surface and cool magma is pulled down to heat up into hot magma plumes again forming a circular current. The heat rises upwards from the core.
molten rock beneath the earth crust.
a rupture in the crust of the planet that allows hot lava to escape from the magma chamber.
sea floor spreading
in the ocean tectonic plates move apart magma from the inside of the earth oozes out and solidifies.
underwater mountain system formed by plate tectonics.
two plates are moving away from each other and new crust if forming from magma
plates slide past each other
two plates are moving towards each other and if the plates are of equal density they form a mountain chain if they are of unequal density one slides sinks beneath the other to form a subduction zone
places within the mantle where rocks melt to generate magma.
the sideways and downward movement of a plate into the mantle beneath another plate.
regions where subduction occurs.
subduction results in a volcano, water with liquid, water from the sea comes out as a stream, which can blow other mountains up.
when magma rises into the gab between diverging plates and form a volcano
hot spot volcano
volcanic regions thought to be fed by an underlying mantle, can be a chain of them, the oldest volcano is the one further away from the hot spot. ex: Hawaii
rock formed through the cooling and solidification of magma or lava.
the result of a transformation of a existing rock caused by high heat and pressure.
formed by the compression of sediment.
the breaking down of big rock into smaller rock
transportating the weathered material away.
the accumulation or laying down of matter by a natural process.
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