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Patterns in Fossils

Science Unit 6 Lesson 1

QuestionAnswer
What are fossils? Mineralized remains of plants and animals that lived long ago
What are the mineralized remains of plants and animals that lived long ago? Fossils
What is the dead plant or animal covered with? Sediment
What happens next when an organism is covered in sediment? The soft tissue decays
What replaces bones? Minerals
What are cast and mold fossils? Imprints of a body left in a rock
What are imprints of a body left in a rock? Cast and mold fossils
What are trace fossils? Impressions such as footprints, burrows, or nexts
What are impressions such as footprints, burrows, or nests? Trace fossils
What happens to an oraganism when it dies? Breaks into small particles and form rocks
What direction does sediment form? Horizontal
What direction is horizontal Side to side (parallel to Earth)
What direction is side to side (parallel to Earth?) Horizontal
What are rock layers called? Strata
What are strata? Rock layers
How do scientists compare the ages of fossils and rock layers? By comparing the strata (rock layers)
What can scientists learn from comparing strata? The ages of fossils and rocks
How do scientists get rock layers to observe? Take core samples
What is a core sample? A piece of rock showing layers that a scientist can observe
What is a crack in the rock layers of Earth? Fault
What is a fault? A crack in the rock layers of Earth
How can an older layer of rock end up above a younger layer of rock? Rocks get pushed up, moved apart or turned over
What happens when rocks get pushed up, moved apart, or turned over? The older layer can end up on top of the younger layer
What else can change a rock layer? Magma
What does magma create when it cools? Igneous rock
How Is igneous rock formed? Cooling magma
What changes sedimentary rocks into metamorphic rocks? Heat and pressure
What can heat and pressure cause rocks to do? Turn sedimentary rocks into metamorphic rocks
What have scientists created by studying rock strata? Fossil record
How did scientists create a fossil record? By studying rock strata
Created by: user-2045275
 

 



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