Fossils1 Flashcards
(8 cards)
What are fossils?
Preserved remains of animals and plants found in sedimentary rocks
Fossils provide evidence of past life and can help scientists understand the history of Earth.
How do fossils form?
When an animal or plant is buried quickly in a location with very little air
This process typically occurs in sedimentary environments such as sea beds or lake beds.
Why are fossils primarily found in sedimentary rocks?
Sedimentary rocks form in water where conditions are suitable for fossil preservation
Fossils require specific conditions to form, including rapid burial and low oxygen levels.
What happens to the soft parts of animals after they die in the sea?
They rot away
This decay process is a crucial step before fossilization can commence.
What replaces the bones of the animal during fossilization?
Minerals in the water
Over time, these minerals can crystallize and harden, preserving the shape of the bones.
What is the significance of the dinosaur fossil mentioned?
It was formed about 150 million years ago and is found in limestone
This indicates the age of the fossil and the type of sedimentary rock it is associated with.
Fill in the blank: Fossils can only form if the animal or plant is buried quickly in a place where there is very little _______.
air
True or False: Fossils can form in igneous rocks.
False
Fossils are primarily found in sedimentary rocks due to their formation processes.