Font size
WorksheetsFossils & Geologic Time Scale - Pearson Chapter 8 L 1, 2, 4
Total questions: 23
Worksheet time: 2hrs 11mins
What is a fossil?
The preserved remains or traces of living things
A really old rock
Only the traces of living things
An animal preserved in rock
What is a mold fossil?
A fossil formed when an organism creates by itself a hollow shape in sediment that looks just like the organism
A solid copy of the shape of an organism
A fossil formed when an organism is buried and its remains decay, leaving a hollow area in the sediment
A fossil formed when a hollow organism is buried and is fossilized
What is a cast fossil?
A liquid copy of an organism created when water with minerals and sediment fill up a mold
A solid copy of an organism created when water with minerals and sediment fill up a mold
A fossil of a dinosaur that broke its bone
A solid copy of an organism created when sediment hardens inside of a cast
What is a petrified fossil?
A fossil that is formed when an organism spontaneously turns into stone
A fossil that is formed when an organism is petrified
A fossil in which some or all of an organism's minerals is replaced with organic material
A fossil in which some or all of an organism's organic material is replaced with minerals
What is a carbon film fossil?
A fossil made when gases escape from sediment, covering an organism with a thin layer of carbon
A fossil made when carbon escapes from sediment, covering an organism with a thin layer of gases
A fossil made when an organism watches a film about carbon
A fossil made when an organism is covered with a thick layer of carbon
What are trace fossils?
Fossils that show evidence of the dancing an organism did
Fossils that show evidence of the activity of organisms.
Natural tracings of original fossils
Bits of evidence left behind by organisms
What are preserved remains?
When an organism is trapped in tar, amber, or ice, and ALL organic material is preserved
When an organism is trapped in a sticky material and SOME organic material is preserved
When remains are preserved
When an organism escapes from tar, amber, or ice, and ALL organic material is preserved
Who is a paleontologist?
A scientist who studies rocks
A scientist who studies dinosaurs
A scientist who studies fossils
A scientist who studies plants
What can fossils show about Earth's past?
How living things changed over time (evolution)
How climate changes in a location
Nothing about Earth's past
How continental drift occurred
What organisms lived in the past but not today (extinction)
What is the fossil record?
Part of the knowledge gathered from fossils and what fossils show about ancient life on Earth
The combined knowledge gathered from fossils and what fossils show about modern life on Earth
The combined knowledge gathered from footprints and what footprints show about ancient life on Earth
The combined knowledge scientists have gathered from fossils and what fossils show about ancient life on Earth
What is evolution?
The change in inanimate things over time
The rapid change in living things
The revolution of Earth around the sun
The change in living things over time
What does it mean when an organism is EXTINCT?
The organism no longer exists on Earth but might exist again
The organism no longer exists on Earth and will never exist again
The organism exists on Earth but never will again
The organism exists on Earth and might exist again
What is the relative age of a rock (layer)?
The precise age of a rock
The age of a rock relative to a person
The age of a rock compared to the ages of other rocks
The age of a rock relative to anything
What is the absolute age of a rock (layer)?
A guess of the number of years tha thave passed since the rock formed
The number of years that have passed since the rock formed, scientists sometimes cannot be sure about the age
The age of a rock relative to other rocks
The precise number of years old a rock is, scientists can always be sure about the age
What does the Law of Superposition say?
In disturbed horizontal sedimentary rock layers, the oldest layer is at the bottom. Each higher layer is younger than the layers below it.
In undisturbed horizontal metamorphic rock layers, it is impossible to know the age of each layer.
In undisturbed horizontal sedimentary rock layers, the oldest layer is at the top. Each lower layer is younger than the layers below it.
In undisturbed horizontal sedimentary rock layers, the oldest layer is at the bottom. Each higher layer is younger than the layers below it.
What are characteristics of an index fossil?
Helps geologists match rock layers
Organism existed for a geologically short period of time
Organism is extremely common and widely distributed
Organism is very rare and is only in a small area
Organism is in every single rock layer
What is the geologic time scale?
A record of the geologic events according to rocks
A record of the geologic events and the evolution of life forms as shown in the fossil record
A record of the geologic events and extinction
A record of geologic time in the fossil record
What is a period in geologic time?
A long unit of geologic time dividing the time from after the Precambrian Time to today
A unit of geologic time dividing eras
Precambrian Time
What is an era in geologic time?
A long unit of geologic time dividing the time from after the Precambrian Time to today
A unit of geologic time dividing eras
Precambrian Time
What are the three eras in the geologic time scale (excluding Precambrian Time)？
Cenozoic Era
Mesozoic Era
Paleozoic Era
Cambrian Era
Permian Era
Why did scientists create the geologic time scale?
To make studies about Earth's history easier by giving specific periods in Earth's history
To make studies about Earth's history harder by giving specific periods in Earth's history
Just because they wanted another way to measure time
To make studies about Earth's history easier by giving vague periods in Earth's history
What did scientists study in order to create the geologic time scale?
The fossil record
Written records of events
Index fossils
The theory of continental drift
Rock layers
How did scientists choose when to begin and end periods in the geologic time scale?
They used extinctions in life forms at certain times, the timescale depends on events in the history of life on Earth
They used changes in life forms at certain times, the timescale depends on events in the Precambrian Time
They used changes in life forms at times, the timescale depends on events in the history of humans on Earth
They used changes in life forms at certain times, the timescale depends on events in the history of life on Earth
