Sci. Review Word Scramble
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Question | Answer |
What is formed when sedimentary rock layers are reformed by heat and pressure? | Mountains are formed. |
What is revealed by thousands of layers of sedimentary rock? | The long history of earth's changing surface. |
What do the slight differences in the structure of fossils indicate if they are found in different rock layers? | Species change over time. |
Why do scientists study rock layers? | Scientist study rock layers to find physical evidence of earth's history. |
What evidence do we have that earth's crustal surface has changed over time? | Marine fossils found in mountain areas provide evidence for earth's changing crustal surface. |
Where can we find evidence that living things have evolved over millions of years? | In the fossil records. |
Why do scientist study fossils? | To know how organisms have evolved or changed. |
What type of rock contains the best fossil record? | Sedimentary rock. |
What structural adaptation helps a desert plant conserve water between rainy seasons? | Thick leaves help desert plants store water. |
How does the formation of sedimentary rock layers allow plant and animal remains to appear and disappear? | Layers were formed at different times as evidence shows different fossils in different layers.Some fossils were formed near water; some by land. Oldest fossils found on bottom layer. Trilobites are the oldest fossil and others formed later. |
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dhirnickel1
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