-
What forms limestone?
tiny bits of skeletons and shells
-
What do you call eroded material taht settles on the bottoms of lakes, rivers, oceans?
SEDIMENT
-
What is made of weathered rock, dead and decaying plant and animal remains?
SOIL
-
Name the steps in forming fossils.
- 1. After it dies, skin, muscles and other soft body parts decay.
- 2. Sediment settles on the remains.
- 3. More layers form.
- 4. Remains are replaced with minerals that harden into rock.
- 5. Rock layers weather and erode.
- 6. The fossil appears at the surface.
-
How many major time periods is the history divided?
FOUR
-
Have geologists found jellyfish in rocks?
Yes, in the Precambrian era.
|
|