 |
| Step C, Cast and Mold |
Objective: To show how way different materials decay at different rates
A: Hot glue four sugar cubes together
B: Let dry over night
C: Place sugar cube structure in a strainer, run warm water over it
D: What happens to the sugar? What happens to the glue? What can we learn about the way bodies of living things decay from this experiment?
2. Cast and Mold:
Objective:
To learn the difference between the cast and the mold of a fossil
A:
Coat the ridges of a rock, stick, or shell with Vaseline
B:
Press the rock, stick, or shell into a clump of clay.
C:
Remove carefully.
D:
Drizzle white glue in the imprint.
E:
Let glue harden--then remove.
F:
Which part is the cast? The mold?
3. Imprints:
Objective: To explore other ways fossils are formed
A: Dip a rock, stick, leaf, or branch in paint
B: Press the object on a sheet of paper
C: Remove carefully.
D: Look at the resulting shape? What can you observe from the imprint left by the shape of the object you pressed.
 | ||
| Step B, Cast and Mold |
 |
| Step A, Imprints |
 |
| Step D, Imprints |
Washington State Standards:
Students know that....
-Our understanding of Earth history is based on the assumption that processes we see today are similar to those that occurred in the past.
-Thousands of layers of sedimentary rock provide evidence that allows us to determine the age of Earth’s changing surface and to estimate the age of fossils found in the rocks.
No comments:
Post a Comment