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WorksheetsUnit 6 Fossil Record
Total questions: 23
Worksheet time: 12mins
The idea that younger layers of rock will be on top of older layers is the
law of gravitation
law of superposition
law of crosscutting
law of motion
The law of crosscutting states that any feature of rock strata that cuts across another feature must be ___________
older
younger
less radioactive
larger
The theory of ________________ refers to the idea that slow changes to Earth's surface, such as ice ages and plate tectonic motion, were primarily responsible for the changes on Earth.
gradualism
catastrophism
evolution
gravitation
The theory of ________________ refers to the idea that sudden or rapid changes to Earth's surface, such as natural disasters like asteroid strikes or volcanic eruptions, were the driving force of change on Earth.
gradualism
catastrophism
evolution
gravitation
layers of rock are known as
debris
strata
fossils
gradualism
Comparative anatomy uses ____________________ structures to show that two species share a common ancestor.
homologous
embryology
analytical
heterozygous
Where are fossils LEAST likely to form?
in water
in rich soil
in sand
in sap
a type of fossil that includes the actual remains of an organism preserved in tar is
an inclusion fossil
a trace fossil
a mold fossil
a cast fossil
fossilized footprints are considered
inclusion fossils
mold fossils
cast fossils
trace fossils
stone copies of dinosaur bones created from a mold fossil are called
trace fossils
cast fossils
inclusion fossils
mold fossils
What is the most accurate method to determine the absolute age of a fossil?
radioactive dating
index fossils in the same layer
law of superposition
the birth certificate
A good index fossil must be __________.
abundant
rare
found in multiple layers
difficult to identify
What evidence tells us that an asteroid killed the dinosaurs 65 million years ago?
extinction occurred very slowly for the dinosaurs since they are found in many layers
there is a giant crater off the coast of the Yucatan peninsula that is 65 million years old.
extinction occurred rapidly for all organisms on Earth
volcanic ash is found in layers that correspond with the end of the Paleozoic era
Which of the following is least likely to lead to a mass extinction event?
a stable climate with little environmental change
an asteroid striking the planet
hot spot volcanoes
a hurricane
In the rock strata shown, where would the most complex life forms be found?
with ammonites
with brachiopods
with trilobites
with euryptids
What pattern would be shown in the fossil record of these rock strata?
slow changes over time
a decrease in the number of fossils over time
an increase in the number of fossils over time
the same fossils can be found in every layer
homologous structures like those shown in the picture are evidence
of common descent
of gravitational force
that these organisms had different ancestors
that these organisms are the same species
According to the homologous structures shown, which organism is most closely related to the bat?
bird
human
The embryos of different species in the diagram start out looking very similar. What does this mean?
they share a common ancestor
they are unrelated species
they all take the same amount of time to grow
they all end up being the same size
Which species is most closely related to the snake?
lizard
crocodile
bird
tuatara
which organisms have retractable claws
leopard and wolf
house cat and leopard
horse and wolf
leopard and tortoise
What feature is present in both primates and birds?
hair
opposable thumbs
amniotic egg
egg shells
which organisms have hair but are not bipedal?
amphibians
birds
prosimians
humans
