Rocks ♡

Description

1 Science ♡ Flashcards on Rocks ♡, created by lauren ♥ on 24/05/2016.
lauren ♥
Flashcards by lauren ♥, updated more than 1 year ago
lauren ♥
Created by lauren ♥ over 8 years ago
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Resource summary

Question Answer
What are rocks made up of ? ♡ Mixtures of minerals ♡
What is chemical weathering ? ♡ Rain is naturally acidic, chemical weathering is when the acid reacts with minerals in the rocks ♡
What is freeze-form action ? ♡ When water gets into cracks in rocks and it freezes & expands - this widens the cracks ♡
What is magma ? ♡ It's molten rock ♡
How is granite formed ? ♡ By slow cooling magma which crystallizes as it solidifies ♡
Describe how sedimentary rock is formed ? ♡ Layers of sediment collect on top of each other, the layers on top squash the ones below them, this forces the grains closer together and when the water gets squeezed out of the sediment - they get glued together by chemicals dissolved in water, this forms sedimentary rocks ♡
What type of rock is often porous ? ♡ Sedimentary ♡
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