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www.earth.northwestern.edu/public/seth/Demos/XTAL/xtal.html

Understand the effects of cooling rate on crystal size; Understand how rapid cooling ... When magma cools, crystals form because the solution is super- saturated ...

www.rsc.org/Education/Teachers/Resources/jesei/cooling/index.htm

It can be used to illustrate how the rate at which molten rock cools affects the size of the crystals that form within the solid rock – rapid cooling producing small ...

www.coursehero.com/file/7654704/Chapter-02Test

As the rate of cooling increases (speeds up), the size of the crystals that form ______. 6 ... Intrusive rocks ______. a. are generally fine grained b. form at Earth's ...

www.easynotecards.com/notecard_set/38628

As the rate of cooling increases, the size of the crystals that form ______. ... What two factors speed up rates of chemical reaction and weathering in rocks and ...

www.answers.com/Q/As_the_rate_of_cooling_increase_the_size_of_the_crystals_that_form

As the rate of cooling of igneous rocks increases the size of the crystals that form ? The size of crystals decreases as the cooling increases. This is called an ...

www.answers.com/Q/As_the_rate_of_cooling_of_igneous_rocks_increases_the_size_of_the_crystals_that_form

As the rate of cooling increase the size of the crystals that form? The size of the crystals that do form are smaller/microscopic in that the time an temperature for ...

astro.temple.edu/~grand/geo50/Chapter3.html

Factors Affecting Crystal Size. rate at which magma cools. very rapid cooling - glass rapid cooling - fine-grained slow cooling - coarse grined. amount of silica ...

www.tulane.edu/~sanelson/eens1110/igneous.htm

Sep 3, 2015 ... Volcanic or extrusive igneous rocks form when the magma cools and ... As pressure increases in the Earth, the melting temperature changes as well. .... Because cooling of the magma takes place at a different rate, the crystals that form ... Depending on size, tephra can be classified as bombs. lapilli, or ash.

www.columbia.edu/~vjd1/igneous.htm

... on the rate of cooling of the melt: slow cooling allows large crystals to form, fast ... are characterized by coarse-grained texture, in which the mineral crystals are ... and by texture or grain size: intrusive rocks are course grained (all crystals are  ...