8.2 Study Guide
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| fossil | remains or traces of an organism that lived in the past
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| referring to forms of life that have died out. | extinct
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| fossil record | record of life on earth provided by fossils.
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| mold | a fossil impression left in rock by the hard parts of an organism.
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| cast | a fossil formed by minerals in water that build up in a mold
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| ________ form when an animal or plant dies and is covered by sediment. The sediment forms a rock. The animal dissolves and leaves an impression in the rock. | Fossils
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| You can learn which order animals developed on the earth and how the earth has changed over the years from a ________ _______ | fossil record
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| A ______ is a fossil that is an impression in a rock of an animal or plant. A ______ is formed in a mold by sediment. The ______ comes first. | mold; cast; mold
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| _______ _______ organisms left little fossils because their body would decay before the fossil could form. | Soft bodied
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| Fossils of organism X are always found in rock layers below organism G. Both are always found underneath organism A. Which organism appeared on earth first? Which evolved most recently? | Organism X was 1st, organsim G was second, Organsim A was most recent
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
bob dohl
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