Science Rock Cycle

How do I change sedimentary to metamorphic?

• heat and pressure

• melting

• cooling

• weathering

Which statement about the formation of rocks is true?

• Weathering and erosion can change sedimentary rock into sediment

• Heat and pressure can change igneous rock to sedimentary rock

• Heat and pressure cause metamorphic rock to weather and erode

• Weathering and erosion prevent magma from changing into igneous rock

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Which statement is the best description of what happens in the rock cycle?

• As sedimentary rocks are buried deep below other rocks, they are changed by heat and pressure, eventaully return to the surface, and are weathered again.

• Rocks on old mountains are gradually weathered away, while mountain building and volcanism form new rocks.

• Once formed, rocks stay in place until rocks above them are weatherd away and they reach the surface.

• Younger sedimentary rocks are always deposited on top of older metamorphic or igneous rocks.

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Ricardo has an igneous rock in his rock collection. Where did this rock most likely form?

• in a volcano

• on a forest floor

• coral reef

• in earth's crust

Which statement below best describes where and why a particular type of rock may be found?

• Metamorphic rock may be found at location A (UNDERGROUND), where pressure and heat is supplied by the layers above.

• Metamorphic rock may be found at location B (SUBDUCTION ZONE), where magma escapes from the area where oceanic crust dives under continental crust.

• Sedimentary rock may be found at location A( UNDERGROUND), where it is formed from melting and solidifying sediments.

• Sedimentary rock may be found at location B (SUBDUCTION ZONE), where rock has been weathered by water to form sand.

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Granite is a light colored igneous rock found in the mountains. When granite weathers, it breaks down into larger grains of sand and much smaller particles of silt and clay. These pieces roll down the sides of the mountain and form piles. After many years, what type of rock would most likely be formed at the foot of a mountain?

• Sedimentary rock will form as the layers sand, silt and clay are pressed together.

• Metamorphic rock will form due to the pressure caused by the movement of the mountain.

• Magma rock is formed from the intense heat released from the volcanic mountain.

• Igneous rock will form since all mountains are formed from volcanoes.

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At certain points along the ocean floor, areas of spreading occur, creating Mid-ocean ridges. Along these areas new rock is formed. what rock will most likely formed at these ridges?

• Igneous rock is formed from molten magma, being pushed up through the separation in the ocean floor, then cooled by seawater.

• Metamorphic rock is formed in the areas of new rock due to being under pressure from the ocean above.

• Sedimentary Rock is formed as the sand, from the bottom of the ocean, keeps piling up in layers and then is cemented together by magma.

• Metamorphic rock is formed as heated rock, located near the mid-ocean ridge, is layered at the bottom of the ocean, then compressed by gravity.

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While studying rocks in Hawaii, a geologist discovered an abundance of igneous rock. Which of the statements below best describes how this rock most likely formed?

Correct Answer

• Either metamorphic or sedimentary rock was melted then cooled to form igneous rock.

• Sedimentary rock melted then cooled to become igneous rock.

• Metamorphic rock melted then cooled to become igneous rock.

• Metamorphic rock was weathered then melted to become igneous rock

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Where would igneous rock most likely turn into metamorphic rock?

• Deep in the Earth’s crust where it is exposed to the most pressure and hottest temperature

• On the surface of Earth’s crust where it is exposed to weathering by wind and rain

• Under the Ocean where it is under tremendous pressure

• In the Earth’s mantle

Which type of rock results from melting and cooling of magma?

• Igneous
• Metamorphic
• Sedimentary
• Extrusive