Shrek has layers, and so do rocks!
In Exhibit A, what is the letter "E" representing?
A. Fault
B. Igneous Rock
C. Sedimentary Rock
A. Fault
What evidence did Wegener use to prove the theory of continental drift?
Fossils across oceans, matching mountain ranges, etc.
What type rock will you find a fossil in?
Sedimentary.
Is survival of the fittest always the fastest, biggest, or smartest?
No, it all depends on the environment and if the organism is fittest for its niche it the environment.
What is a mutation
A random genetic change in the DNA of an organism that can be passed down to its offspring.
What type rock is created from an intrusion or extrusion?
Igneous.
What are the 3 requirements for an index fossil?
1. widely distributed
2. in only one layer of rocks
3. lots of the specific fossil
If I am a light moth in a dark forest, am I going to survive longer and reproduce more than a dark moth?Why?
No, because you will most likely be easily seen by birds that eat moths and will be eaten. Therefore, you will not survive long enough to reproduce more than the dark moth.
Explain analogous structures
Different looking (wings on birds and wings on bat) structures that evolved independently in two living organisms to serve the same function (flying).
What is a variation?
The phenotypical trait that shows a mutation in a organism.
What is the difference between relative age and absolute age?
Relative age is when we use index fossils to date the rock layers around it, absolute age is when we use radioactive or carbon dating to find out the exact date of a fossil.
How do scientists use ice cores to help them understand the history of Earth?
They use the trapped bubbles and dust to tell them about the temperature, air quality, pollution, mass extinctions, etc.
How tree rings and ice cores are used like absolute dating?
Analyze seasonal layers, chemical, and dust markers, enabling precise dating back thousands of years.
What is an example of a vestigial structure?
Ex. wisdom teeth, goosebumps, tailbone, etc.
What is non- random mating?
Using attraction to determine who you mate with, if no one mates with someone who has an unattractive trait, that trait will not be passed on.
Which method of radiometric dating is used to find the age of living things less than 50,000 years old?
Carbon Dating
How are fossils evidence of evolution?
What is they show us the progression of the evolution of organisms throughout Earth's History.
What is an extrusion? What is an intrusion?
An intrusion is when magma comes up through the crust from the mantle. An extrusion is when an intrusion break the surface and spews magma on the Earth's surface.
How are homologous and vestigial structures evidence of evolution?
They show us that all organisms have a single common ancestor.
Is this an example of homologous or analogous or vestigial structures? Why?
EX. Human arm, bat wing, whale fin, cat leg
Homologous, because they have the same structure but are used for different purposes.
Order the layers from the following diagram in order of youngest to oldest (please include the earthquake). See Exhibit B
I, B, F, earthquake, M, H, R
List and describe 4 types of fossils.
1. Cast and mold
2. petrified fossils
3. Amber encased fossils
4. frozen fossils
5. trace fossils
Use Exhibit C, if the grey trilobite is dated 450-340 mya and the yellow ammonite is dated 340-320 mya, what year did the snail shell have to exist?
340 mya
Explain how natural selection occurs.
The fittest for its environment survives to reproduce.
What is genetic drift?
When a population shrinks and chance can take over, if a pandemic happens, the survivor's traits will represent the gene pool.