Fossils
T/F
The fossil record is complete
FALSE
Absolute age gives us the number of _____ something like a fossil or rock has existed.
Years
Law of _________ tells us that the bottom layer is the oldest and the top layer is youngest.
Superposition
Who do we credit for most of the ideas for the Theory of Evolution?
Charles Darwin
Individuals within a population have slightly different traits, called _______.
Variation
What type of evidence has provided scientists with direct evidence of the Theory of Evolution?
Fossils
Look at this graph.
Tell me the half life
14 Billion
T/F
Relative dating can also determine the types of minerals in rocks as well as what type of rock it is.
FALSE
Remember these cave fish?
Why can the cavefish population is able to survive in caves without eyes?
They don't need them in a dark cave...
Random changes in genetic material(DNA) is called__________
Mutation
WHY do scientists look for fossils?
To find connections of species over time
Which information does a scientist need to most accurately determine the age of a rock?
Amount of radioactive isotope
D is an Igneous intrusion caused by a Volcano.
E is a fault line caused by an Earthquake.
Which one came first?
D
Scientific ____ tells WHAT will happen under a given circumstance. DESCRIBE
Scientific ______ tells WHY things happen under ANY circumstance. EXPLAIN
Law
Theory
The arctic landscape is melting and changing. If an animal like polar bears do not have ______that allow them to survive these changes, they may go extinct.
Adaptations
Charles Darwin found a glyptodon fossil that resembled the modern armadillo. This evidence was used by Darwin to support his theory of natural selection by showing how species have ______ over time and that the glyptodon and armadillo share a common ancestor.
changed or evolved over time
What are the two main types of radioactive isotopes we have talked about?
Carbon 14 and Uranium 238
Which of the following correctly describes the relative age of the fault?
younger than ____, but older than ______
A, Q
Bird Beak Lab
When Darwin compared birds on the mainland to the birds on the galapagos islands. Over time the populations of the birds of the island changed with the changing food source.
How did this species become successful after the change in their environment?
Different beaks eat different foods.
Variations increase the chance of having a trait that is best suited for the __________ no matter what change occurs.
environment
Our moon does not have living things on it. This means the moon does not have fossils. How would we find ages of moon rocks?
Law of Superposition OR Radioactive Dating?
Fossils
Radioactive
Darwin observed that the turtles in the Galapagos Islands were extremely large compared to the turtles closer to land. This made them more likely to survive and reproduce.
This is because of what reason?
_____ OF THE _____
They adapted to a new environment and evolved over time. SURVIVAL OF THE FITTEST.
Why are there so many different types of cats?
Mutations lead to adaptations for different environments