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WorksheetsHistory of Earth
Total questions: 40
Worksheet time: 32mins
Age of rock compared to ages of other rocks.
Relative Age
Absolute Age
Radioactive Dating
Radioactive Decay
The number of years that have passed since the rock formed.
Relative Age
Absolute Age
Radioactive Dating
Radioactive Decay
A gap in the geologic record that shows where rock layers have been lost due to erosion
Unconformity
Fossil
Radioactive Dating
Radioactive Decay
The preserved remains or traces of an organism that lived in the past.
Unconformity
Fossil
Radioactive Dating
The Law of Superposition
In undisturbed horizontal sedimentary rock, the oldest is at the bottom and the newest the top.
Unconformity
The Law of Superposition
Radioactive Dating
Radioactive Decay
A record of the geologic events and the evolution of life forms as shown in the rock and fossil record.
Geologic Time Scale
Era
Period
Index Fossil
Geologists divide the time between the Precambrian and the present into 3 long units of time called..
Geologic Time Scale
Eras
Period
Index Fossil
Eras are subdivided into units of geologic time called...
Geologic Time Scale
Eras
Periods
Index Fossil
fossil that is useful for dating and correlating the rock layer in which it was found.
Geologic Time Scale
Eras
Periods
Index Fossil
A vertebrate whose body temperature is determined by the temperature of its environment, and that lives it's early life in water and it's adult life on land
Invertebrate
Vertebrate
Amphibian
Reptile
An animal without a backbone
Invertebrate
Vertebrate
Amphibian
Reptile
An animal with a backbone
Invertebrate
Vertebrate
Amphibian
Reptile
A vertebrate whose temperature is determined by the temperature of it's environment, that has lungs and scaly skin, and that lays eggs on land
Invertebrate
Vertebrate
Amphibian
Reptile
A vertebrate whose body temperature is regulated by it's internal heat, and that has skin covered with hair or fur and glands that produce milk to feed it's young
Mammal
Vertebrate
Amphibian
Reptile
What is the approximate age of Earth?
4.6 billion years
4.6 million years
46,000 years
4600 years
Which of these statements describes a key characteristic of index fossils?
They existed in a unique location.
They are present in very small numbers.
They existed for a short span of time.
They are similar to other fossils.
How was the fossil of this insect formed?
by being petrified
by being trapped in asphalt
by being trapped in hardened tree sap (amber)
by being buried in sediment that slowly decays
Sometimes a fossil is formed as a result of the movement of an organism in soft sediment. What type of fossil is this called?
bone fossil
trace fossil
frozen fossil
petrified fossil
Sedimentary Rock:
Rocks that form from the bonding of rock fragments such as sand, silt, or clay; from organic materials; and from chemicals dissolved in water.
Rocks that form when other rocks are changed by heat and pressure.
Rocks that form from cooling magma or lava
when rock is on the bottom layer it is...
Growing underground
The oldest layer
The youngest layer
Dirt
Which era is the oldest era?
Paleozoic Era
Mesozoic Era
Cenozoic Era
What is the purpose of the geologic time scale?
to organize the major Era's of Earth's history
to compare very short & very long periods of time
to compare with other non-geologic time scales
to help people understand that planet is really old
Which Era was the longest?
Cenozoic
Paleozoic
Precambrian
Mesozoic
What does the picture indicate?
an igneous intrusion
an angular unconformity
an extinction event
an explosion of different organisms
Mass Extinction / Extinción masiva
Times when MANY species on Earth died or became extinct within a short period of time. / Tiempos en los que MUCHAS especies en la Tierra murieron o se extinguieron en un corto período de tiempo.
The remains or traces of ancient living things. / Los restos o rastros de antiguos seres vivos.
If one geologic feature cuts across another feature, the feature that it cuts across is older. / Si una característica geológica atraviesa otra característica, la característica que atraviesa es más antigua.
If one rock contains pieces of another rock, the rock containing the pieces is younger than the pieces. / Si una roca contiene pedazos de otra roca, la roca que contiene los pedazos es más joven que los pedazos.
Olivia is older than Steven.
What type of dating system is this?
Isabella's part in a group project on the history of Earth was researching and presenting on the Precambrian time. Which TWO Phrases best characterize the Precambrian time?
a time of great evolutionary change
a time with multiple periods in it
a time of few fossils
a time that covers 88 percent of Earth's history
The sedimentary layers of rock in Earth
Fossil
Rock Strata
Stratigraphy
Geologic Time Scale
The study of rock layers.
Rock Strata
Fossil Record
Geologic Time Scale
Stratigraphy
This picture shows 4 rock layers and an intrusion of Basalt (a type of molten rock). When molten rock pushes its way into rock layers already formed, it creates an intrusion. This rock strata indicates that the basaltic intrusion must have happened...
After the limestone was deposited
Before the clay was deposited
Before the granite was deposited
Before all 4 layers were formed
This illustration shows rock layers from 3 different locations and fossils the rock layers contain. Which conclusion can be drawn from the information in the illustration?
The fossil F3 appeared most recently of those shown here.
The fossil F1 appeared before all the others.
The fossil F4 is the oldest of all the fossils.
The Fossil F2 appeared most recently of those shown here
What do fossils tell us about the history of the Earth?
They can tell us about organisms that have gone extinct
They can tell us about climates and environments of the past
They can show us how species have evolved over time
All of these statements are true
In what period did the first modern humans evolve?
Cenozoic
Quarternary
Paleogene
Mesozoic
Magma that cuts through the rock strata underground is a(n):
Index fossil
Igneous extrusion
Igneous intrusion
Radioactive fossil
