What is the name of the law this type of dating is based on?
Law of Superposition
What do organisms need to be buried in to become fossils?
Sediment
Who came up with the Theory of Evolution?
Charles Darwin
What are the types of absolute dating methods discussed in class?
Carbon-14 and Uranium-238
How can you use the fossil record and relative dating together?
The fossils found in deeper layers of the Earth are older than the fossils found closer to the surface.
What does the Law of Superposition state?
The deeper you go the older the rock is.
What is an index fossil?
A fossil that is useful for dating and correlating the strata in which it is found.
What kind of traits are passed down from one generation to the next?
Inherited traits such as color, beak structure, etc. Learned behaviors cannot be passed down from parent to child.
What the term for "the amount of time for half of the parent isotope to decay into the daughter isotope."
Half-life
How do animals of today compare to animals of the past?
What is an igneous intrusion?
When magma from the mantle eats its way through the layers of rock above it until it reaches the surface and cools into rock.
Mount Everest has fossils of trilobites at its peak. Trilobites are sea creatures. What does this tell us about Mount Everest?
It was once under water.
A process used by humans to develop new organisms with desirable characteristics is called?
Artificial Selection
Scientists have used Uranium-238 dating on a Zircon crystal in Australia to determine that the age of the Earth is at least how old?
4.6 Billion years old
How does the fossil record support the Theory of Evolution?
The fossil record shows slow changes to organisms over a long period of time.
Where is the unconformity?
Under letter G
Why is the fossil record important?
It shows the changes in species over time as well as major changes in the Earth's surface and climate.
What is meant by the phrase "Survival of the Fittest"?
"It is not the strongest of the species that survives, nor the most intelligent, but the most responsive to change." -Charles Darwin
Basically the organism that can adapt to its environment the best survives.
What percentage of the parent isotope remains if this fossil has gone through 3 half-lives?
12.5%
Why can't we use Carbon-14 dating on dinosaur bones?
Carbon-14 dating only works for about 60,000 years and dinosaurs are older.
Put the rock layers in order from oldest to youngest.
C, B, A, D, E
The fossil record helps to prove what things?
How tectonic plates moved.
How the Earth's environment changed.
How different organisms changed.
What are the key traits needed for natural selection?
Traits that help the organisms survive and traits that help the organism reproduce
A fossil is formed with 12 grams of Carbon-14. How much Carbon-14 would remain after 2 half-lives?
3 grams of Carbon-14
On the Galapagos Islands, Charles Darwin noticed that 15 different finches had 15 different kinds of beaks. What conclusion did he draw from this observation?
The finches adapted to get the food in their environment