Looking at the two pictures can you describe
Looking at the two pictures, can you describe how this form of communication has changed over time?
Essential Question: How do scientists define and support theory of evolution? Standards: S 7 L 5 a. Explain that physical characteristics of organisms have changed over successive generations (e. g. Darwin’s finches and peppered moths of Manchester) S 7 L 5 c. Trace evidence that the fossil record found in sedimentary rock provides evidence for the long history of changing life forms.
Evidence of life’s history on earth is provided by fossils. Fossils are the remains of organisms preserved in the earth.
Fossils can consist of bones, bone fragments, imprints, and preserved remains.
This is a trace fossil. The footprints of a This is a trace fossil dinosaur have been of a seastar preserved.
Most fossils are found in sedimentary rock. Why? Fossils are primarily found in sedimentary rocks because these rocks form at low temperatures and pressures.
Some organisms become fossilized in ice or amber.
Scientists observe fossil characteristics and make inferences concerning the life of the organism based on these observations.
Older fossils are found in deeper layers of the earth’s sedimentary rock; younger fossils are found in the upper layers of the earth’s sedimentary rock.
The fossil record is the total number of fossils that have been discovered, as well as the information gained from them.
Turn to an elbow partner and answer the question below. Discuss how to determine the correct answer.
With the same elbow partner describe the changes in the fossils you see in each layer and what they tell you about that time period.
We do sorting fossils! These cards are rock layers. The letters are fossils. “TC” is the oldest layer. What is the second oldest layer? “CGA” is the second oldest layer. It shares “C” fossils with the “TC” layer. What layer comes next?
We do sorting fossils part 2! These cards have ocean fossils. The oldest layer is “M” sort the fossil layers from oldest to youngest.
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