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What do index fossils found in rock layers in different areas of the world indicate about that the rock layers formed?
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Most fossils are found in what A in rock layers which formed underwater b in rocks which were formed from cooling lava from volcanoes c in sand on seashores d in the waters of seas and lakes?
a
How does the position of fossils in layers show evolutionary changes?
Assuming the layers aren't deformed, the lowest deposition layers are the earliest. Later deposition layers accumulate on top of the earlier layers. Thus, the lowest layers have the earliest fossils, and the highest layers have newer fossils. By comparing the features of early and late fossils of a species, you can determine some of its evolutionary changes. Of course, not all features survive in a fossil - soft tissues, for example.
How do scientists date fossils and artifacts?
Dating fossils and artifacts are easy. Scientist can look and tell how old the fossils by how many layers is under it.
Fossils that appear all over the world in certain rock layers are what?
Index fossils :)
What two things did 19th century scientists do to determine the relative age of sedimentary rock all over the world?
They studied fossils and applied the principle that old layers of rock are below young layers! -
How do fossils that formed in different rock layers provide evidence-of evolution?
Fossils' existence confirms that species are not fixed but can evolve into other species over time
Why are index fossils useful for figure out the age of a set of disturbed rock layers?
index fossils are useful for figuring out the age of a set of disturbed rock layers by index fossils are used to determine when rock layers were formed so if they were used to figure out the age of a set of disturbed rock layers than they can also figure out when they were formed .
What are forming fossils?
Fossils are formed in sedimentary rocks, which has multiple layers to show the level of soil back then.
What does the rock cycle have anything to do with fossils?
Sedimentary rocks are rocks that are formed by layers of different things compacting very tightly. These layers can have a lot of different things in them, like fossils. So, sedimentary rocks are partially made up of fossils.
What are fossil formed in?
Fossils are formed in sedimentary rocks, which has multiple layers to show the level of soil back then.
Principle that allows rock layers in different places to be correlated based on their fossils?
Relative dating by index fossils.
What does the discovery of fish fossils in sedimentary rock indicate?
This indicates that the layers of sedimentary rock that constain fish fossils (or any other marine fossil for that matter) indicate there once was a body of water lying over that are of the earth whether it being an ocean or just simply a lake.
Fossils are found mainly in- - - rock?
Limestone and sandstone. The rock needs to be one that's formed from sedimentation around the dead animal.
Most fossils are found in what A in rock layers which formed underwater b in rocks which were formed from cooling lava from volcanoes c in sand on seashores d in the waters of seas and lakes?
a
How does an unconformity indicate that a long time has passed?
The unconformity shows all the other layers of rock that have formed underneath it
What are hardened remains of plants and animals?
The hardened remains of plants and animals are typically bones or fossils. Fossils are the hardened remains that are formed due to pressure from being squished between Earth's layers.
How does the position of fossils in layers show evolutionary changes?
Assuming the layers aren't deformed, the lowest deposition layers are the earliest. Later deposition layers accumulate on top of the earlier layers. Thus, the lowest layers have the earliest fossils, and the highest layers have newer fossils. By comparing the features of early and late fossils of a species, you can determine some of its evolutionary changes. Of course, not all features survive in a fossil - soft tissues, for example.
