Fossilization
What is the kind of scientist who studies fossils?
paleontologist
What is amber?
#hardened tree sap
#hardened rock sap
hardened tree sap
How are rock layers arranged in the geologic column?
#oldest on the bottom
#newer on the bottom
oldest on the bottom
What type of life existed before the Phanerozoic Eon?
#microscopic life
#Normal life
microscopic life
Name one example of a trace fossil
coprolite (preserved animal waste), burrows, footprints/tracks
What does studying fossils tell scientists?
What is their size, what they ate, how big they were, and how they lived?
The best insect fossils are found in what material?
#amber
#rock
amber
Which era ended with the largest mass extinction in Earth's history, where 95% of all marine life went extinct?
#Paleozoic
#climatic
Paleozoic
What animals started to appear during the end of the Mesozoic era and survived the mass extinction that killed the dinosaurs?
#mammals
#Reptiles
mammals
Relative Dating is when you figure out the age of a rock by comparing it to?
#older rocks
#newer rock
older rocks
Why did many organisms never become fossils?
they decayed/decomposed too quickly
Marine fossils discovered on a Canadian mountaintop supported Charles Lyell's idea that the rocks on the mountain were once
#below the ocean
#on the surface of the ocean.
below the ocean
What is the largest division of geologic time?
#Eon (indefinitely long period of time)
#indefinitely short period of time
Eon
What era was the first of the Phanerozoic Eon and ended 248 million years ago?
#Paleozoic
#Ealeozoic
Paleozoic
Steno's law that states that oldest layers are on the bottom, youngest layers are on the top is called?
#superposition
#Upper position
superposition
How many years of Earth's history do geologists study?
#5.6 billion
#4.6 billion
4.6 billion years
Dinosaur, roughly translate from Greek means?
“terrible lizard”.
Dinosaurs become extinct about ___ million years ago.
76
What is extinction?
the death of every member of a species
What do geologist use to identify specific periods of time and the ages of rock layers?
index fossils
The trace of an organism that has been naturally buried and permanently preserved is what?
#Fossil
# Cast fossil
fossil
A fossilized depression left behind by an organism is called what?
mold
About 225 million years ago, all of earth’s landmasses were joined. This huge landmass is now called____?
Pangea.
Most dinosaurs become extinct about ___ million years ago.
65
It is the sequential replacement of species that follows disruption of an existing community.
Secondary Succession