classify rocks Flashcards
(7 cards)
1
Q
rocks
A
a naturally formed mixture of minerals and other natural materials.
2
Q
minerals
A
a solid, naturally formed substance that always has the same composition and the same properties.
3
Q
sediment
A
the “dirt stuff” that settles to the bottom of liquids , or is carried then deposited by water , wind , or ice.
4
Q
sedimentary
A
rock formed from compacted sediment
5
Q
igneous
A
rock formed from magma or lave
6
Q
metamorphic
A
rock formed from existing rock: heat and pressure cause the minerals to form new combinations or new crystals.
7
Q
scratch test
A
were you try to scratch a rock with different objects ( like a finger nail or a penny) to see if its hard or soft
