EARTH SCIENCE
TECTONICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When spaces inside are filled with minerals from groundwater.
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cavity or space in rock that is left when the hard parts of an organism
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formed when mineral-rich water or sediment wash into a mold. They form a cast of the original organism.
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when the whole organism is preserved.
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Detailed explanation-1: -What is left behind is a cavity in the rock where the organism or part was. This empty space is called a mold. A mold shows the original shape and surface of the organism or part. Sometimes, sand or mud fills a mold and hardens, forming a cast of the original organism or part.
Detailed explanation-2: -Molds and Casts The hard part might decay or dissolve, leaving behind a cavity in the rock called a mold.
Detailed explanation-3: -If this imprint fills in with minerals from sediment and groundwater, it can harden to form a fossil. This fossil is called a cast fossil. The fossilized imprint is called a mold fossil.
Detailed explanation-4: -Answer and Explanation: An example of a mold fossil would be a shell pattern that appears in a rock after a crustacean dies and is buried in mud. Over time, the organic parts of the crustacean and its shell might decay, however, the imprint of the shell on the rock is preserved through millions of years.
Detailed explanation-5: -A mold is formed when an organism dies and the remains decay, leaving behind an imprint in the sediment. A cast is formed from a mold – sediment or other minerals fill in the hollowed area, creating a three dimensional cast of the organism.