Rocks Flashcards
(9 cards)
How are sedimentary rocks made?
Sedimentary rocks are made of small grains crushed together
What are igneous rocks made of?
Igneous rocks are made of cooled down magma
How are metamorphic rocks made?
Metamorphic rocks are made of sedimentary and igneous rock put under extreme heat or pressure
What are grains? {rock}
Grains are small pieces giving a rough finish and a dull look. Absorbs water well.
What does porous mean? {rock}
Porous means whether or not it can absorb water
What are crystals? {rock}
Gives a smooth finish so it is shiny and isn’t rough. It also reflects light. Is not good at all at absorbing water.
With Igneous rocks what does it mean for it to be an extrusive rock. Large or small crystals? Cools faster or slower?
Extrusive = lava cools and solidifies above ground or under water - large crystals - Cools quicker
With Igneous rocks what does it mean for it to be a Intrusive rock? Large or small crystals? Cools faster or slower?
Intrusive = Magma cools and solidifies under ground -small crystals -cools slower
What are the three types of rock?
The three types of rock are sedimentary, igneous and metamorphic rocks