Uses picture
vocab
short answer
CER
comparisons
100
Which fossil is the oldest?
Wild Boar
100
Sediments
little pieces of rock that have broken down over time, like sand, clay, dirt, pebbles...etc
100
how do metamorphic rocks form?
they start as another type of rock and then get pressed deep underground and undergo a chemical change into a metamorphic rock
100
What claim could you make about the T. Rexs age in comparison to the the Fern's age?
The fern is older than the T Rex
100
what is the difference between relative dating and absolute dating?
relative dating is only an estimate and absolute dating is an exact age
200
Based on this graph, how many other Mass Extinctions have there been? BONUS POINTS: What years?
2 (Bonus: around 240 mya and 210 mya)
200
Erosion
the movement of sediments from one place to another
200
how do you use radioactive dating to find the exact age of a rock?
measure the uranium inside to find the exact age
200
What is reasoning when talking about claims and evidence?
Reasoning is the portion of a CER that connects the evidence to the claim and explains how it makes it true
200
What are the differences between the three types of rocks?
igneous is volcanic, metamorphic starts as another rock and sedimentary is made up of little sediments
300
what would the estimated age be of the early cat?
Between 3.4 mya and 2.1 mya
300
What is a system we use to categorize all of the Earth's history based on major events that have taken place
geological time scale
300
why do fossils only form in sedimentary rocks
they are destroyed in the other two types of rocks
300
What evidence could you take from this graph to support a claim about a mass extinction 66 mya?
there was a massive decrease in organisms around this time
300
which is older the Early cat or the Early human?
The early cat
400
Which place would be the hardest for a fossil to form?
Mountain Glacier
400
What is deep time?
Earth a long, long time ago
400
Why are more fossils found in the ocean?
marine snow is a constant stream of sediments, less erosion,
400
what evidence could be used to back up a claim about Michigan being covered in an ocean a long time ago?
fossils found that are only found in the ocean
400
whats the difference between the fossil record and the geological time scale?
the fossil record only has to do fossils but the geological time scale is all of earth's history
500
What is happening in this picture?
fossilization is occurring to the cat's tooth as sediments build up over time
500
What is a zircon?
A crystal found in volcanic rock that tells us how much uranium and lead is found in the rock. This lets us know the exat age of that rock
500
how do you use radioactive dating to find the relative age of a fossil?
When you get the exact age of a volcanic layer above and below the fossil you can estimate it's age in a range of years
500
How do scientists use Claim, evidence and reasoning to fill in holes in the fossil record?
scientists use indirect evidence to create claims about the gap in the fossil record.
500
What are the different reasons for a gap in the fossil record?
Fossils buried too deep, fossils destroyed, conditions not right for a fossil to form