Rocks
What is sedimentary rock made of?
Sediments
What are fossils?
mineralized remains or evidence of an animal or plant.
Look at the image. At the end of which era did dinosaurs go extinct?
Mesozoic Era
What are some ways rock layers can shift?
earthquakes and magma
Are the strata in sedimentary rock from different materials or same materials?
Different materials
Fossils are found in what kind of rock?
sedimentary rock
100 million years
The oldest layer of rock would be at the very TOP/BOTTOM of sedimentary layers.
Bottom
Geologists study sedimentary rock to learn about ....
Earth's history and environment
This type of fossil is used to describe a body or organic evidence of an animal.
Cast or mold fossil
The first birds appeared during which period?
Jurassic Period
The youngest layer of rock would be at the very TOP/BOTTOM of sedimentary layers.
Top
Different periods of time
These types of fossils are clues about an animal and its environment.
Trace fossils
The oldest dinosaur fossil would be as old as....
200-250 million years old
What are key beds?
Rock layers that are easily identified by index fossils.
Underwater
Index fossil
The first dinosaurs appeared during which period?
Triassic Period
How would some land animal fossils end up mixed with sea creature fossils?
The land would be underwater with sea creatures, but then it dried out and land animals lived there.