lesson 1
name 4 earth layers in order!!
the inner core, the outer core, the mantle and the crust.
how old are the oldest rocks
to be 4
Billion years old
what is a body fossil
The remains of an actual organism.
THE PERMIAN EXTINCTION explain
Approximately 252 Million years ago the most significant extinction event in history occurred. It is estimated that 90-95% of all marine species and 70% of all land species went extinct.
Name one of the first mammals
Lystrosaurus: Reptile-like Mammal
Placerias: Reptile-like Mammal
Morganucodon: The first mammal
what is the super continents name
pangea
The Geological time scale is divided into 4 eras. What are the eras?
The Precambrian, Paleozoic, Mesozoic, Cenozoic
A mold fossil is:
is an imprint left by a shell on a rock around it
The first Amphibian was
(Temnospondyli)
Cycads
Ginkgo (tree found in east asia)
Ferns
Conifers
how old is the earth
4.543 billion years
The first life on earth was a single celled organism named ______________.
Archaea.
A cast fossil is?
are replica fossils made using a mold
The first Reptile was
(Hyonomus)
Name 2 Major events of the Triassic Period
Emergence of Dinosaurs
First Mammals
First Flying Reptiles
Triassic Extinction
what galaxy are we in
the milky way
About 1.9 Billion years ago, microscopic, photosynthetic, single cell bacteria called ___________ began to show up.
cyanobacteria
what is a trace fossil, and what is an example.
Evidence that an organism was present without the actual organism. Burrows , Footprints , skat
THE CARBONIFEROUS PERIOD was the age of ____
Age of Amphibians
TRIASSIC EXTINCTION was
70-75% of all species went extinct. Mostly affected marine reptiles, ammonites, and some terrestrial vertebrates. One of the five largest extinctions
Will the Universe end?
no idea
When was SNOWBALL EARTH
– LATE PRECAMBRIAN ERA
1 BILLION YEARS AGO TO 600 MILLION YEARS AGO
name 5 Periods on the geological time scale
Quaternary, Tertiary, Cretaceous, Jurassic, Triassic, Permian, Carboniferous, Devonian, Silurian, Ordovician, Cambrian
THE PERMIAN PERIOD spanned from _______ - ________ MYA
299 – 252
The Jurassic Period occurred from ____-___ MYA
201-145