definition
what does the word "Igneous" mean?
Lava
how do metamorphic rocks form?
Through heat and pressure
What sediment is sandstone made of?
Sand
What do rocks turn into when the melt?
Magma
What are remains, impressions, or any other evidence of life from another geological age?
fossils
Molten rock below earths surface is called what?
Magma
T or F: Can Metamorphic rocks be classified into groups?
False
The arrangement of layers in the sedimentry rock
Stratification
When a rock goes through weathering ad erosion what does it break into?
Sediments
What does it tell us about the rock if it cools faster than any normal sized rock?
the rock is smaller
Broken peices of rock formed by weathering is called what?
Sediments
what is the definition of Metamorphisis
a change of the form
Spheres of silica filled with crystals are called?
geodes
How do sedimentry rocks form?
Sediments compacting and cementing
what are the three main types of rocks?
Metamorphic, Igneous, and Sedimentry
A mixture of minerals, glass, or organic materials are called what?
Rocks
The orininal rock before metamorphisis is called what?
Parent Rock
Sedimentry rock takes up how much of all rocks exposed at the earths surface?
75%
What type of rock does magma form into when it cools and compacts?
an Igneous rock
Record of anceint waves that were recorded when beaches were covered with sediments are called what?
Ripple marks
Hard lumps of fine-grained silica in limestone and chalk is called what?
Nodules
what ar the Three locations were the heat and pressure is enought to change already existing rocks into Metamorphic rocks?
Subduction zone, Mountians, and Close to volcanos
When a large body of rich clay dries what happens?
Mud cracks
what is fastest way to get from a sedimentry rock back into a sedimentry rock?
Sedimenrtry rock weather and erodes into sediments which them cments and compacts back into a sedimentry rock.
Why are rocks important?
Because they help us find more mineral resouces, answers about the Earths past