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Rocks found on Earth are generally classified as sedimentary, igneous, and metamorphic. On which basis are these classifications made?
Hardness
weathered remains of other rocks
igneous
how the rocks formed
It must reach the surface as rock above it wears away.
metamorphic rock
cool fast
metamorphic
When limestone is exposed to enough heat and pressure, it goes through physical changes. These changes can turn limestone into a different kind of rock called marble. Which of these BEST describes marble?
Hardness
weathered remains of other rocks
igneous
how the rocks formed
It must reach the surface as rock above it wears away.
metamorphic rock
cool fast
metamorphic
Which of the following is the raw material from which sedimentary rocks are formed?
Hardness
weathered remains of other rocks
igneous
how the rocks formed
It must reach the surface as rock above it wears away.
metamorphic rock
cool fast
metamorphic
What must happen to rock that formed inside Earth before it can become sediment?
Hardness
weathered remains of other rocks
igneous
how the rocks formed
It must reach the surface as rock above it wears away.
metamorphic rock
cool fast
metamorphic
When a geologist scratches a mineral sample with different materials and minerals, they are more than likely testing for
Hardness
weathered remains of other rocks
igneous
how the rocks formed
It must reach the surface as rock above it wears away.
metamorphic rock
cool fast
metamorphic
Which type of rock can be formed by adding heat and pressure to any of the three rock types?
Hardness
weathered remains of other rocks
igneous
how the rocks formed
It must reach the surface as rock above it wears away.
metamorphic rock
cool fast
metamorphic
Extrusive rocks have small crystals because they
Hardness
weathered remains of other rocks
igneous
how the rocks formed
It must reach the surface as rock above it wears away.
metamorphic rock
cool fast
metamorphic
Which type of rock is most likely to be formed by the cooling of magma underground?
Hardness
weathered remains of other rocks
igneous
how the rocks formed
It must reach the surface as rock above it wears away.
metamorphic rock
cool fast
metamorphic
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