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6th grade(3A) REVIEW part 2 FINALS Flashcards | StudBud
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6th grade(3A) REVIEW part 2 FINALS
6th grade(3A) REVIEW part 2 FINALS
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6th grade(3A) REVIEW part 2 FINALS
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
Which is NOT something you can learn by looking at a fossil leaf?
how big the leaf was
what shape the leaf was
how wide the leaf was
what color the leaf was
2
Which of the following choices is NOT extinct?
triceratops
pine trees
saber-toothed cats
tyrannosaurus rex
3
How are casts different from molds?
Casts are fossils and molds aren't.
Molds are made when materials fill up a cast.
Casts are plants fossils and molds are animal fossils.
Casts are made when materials fill up a mold.
4
Why do scientists think the fossil record is incomplete?
Fossils decompose over time.
Only organisms with hard parts become fossils.
There are no fossils before the Phanerozoic eon.
The formation of fossils is rare.
5
Which type of fossil forms through carbonization?
cast
trace fossil
mold
fossil film
6
An insect encased in amber is what kind of fossil?
a mold and cast
original material
a mineralized fossil
a trace fossil
7
Which is true of the fossil record?
it is large but incomplete
it is large and complete
it is small but complete
it is small and incomplete
8
Which is a major underlying cause of mass extinctions?
sedimentation
evolution
environmental change
genetic change
9
Where are most fossils found?
in mud
in amber
in bones
in rocks
10
What can a footprint tell you about the animal that made it?
what the animal ate
the exact age of the animal
what color the animal was
the animal's size
11
What can you infer about a place that has fish fossils?
The place was once under the sea.
The place was once land.
The place is now a sea.
The fish did not live in water.
12
What can scientists learn about fossils using techniques of absolute-age dating?
structural similarities to other fossils in rock layers
estimated ages of fossils in rock layers
precise ages of fossils in rock layers
causes of fossil disappearances in rock layers
13
Which type of fossil is most common?
mineral
amber
plant
animal
14
Which is NOT a fossil?
the imprint of a fern in a piece of coal
a 300 million year old rock
the footprint of a dinosaur
petrified wood
15
Which is an example of a sudden change that could lead to the extinction of species?
a volcano erupts
sea level changes
a mountain range isolates a species
Earth's tectonic plates move
16
What is petrified wood made of?
wood
mud
amber
minerals
17
Which is the preserved evidence of the activity of an organism?
cast
fossil film
trace fossil
mold
18
Which happens FIRST when a fossil forms?
Soil and sediments cover the remains of a living thing.
A living thing becomes extinct.
A living thing dies.
Scientists dig up a fossil.
19
Which of these fossils is a trace fossil?
a dinosaur footprint
a dinosaur bone
a petrified tree
an insect trapped in sap
20
What is the name for the time scale used to measure Earth’s history?
the evolutionary time scale
the universal time scale
the geologic time scale
the fossil History scale
21
In what type of rock are most fossils found?
metamorphic
igneous
sedimentary
brick
22
How do scientists KNOW that animals have changed over time?
They look at old science books.
They use a field guide.
They compare fossils with animals that live today.
They know the names of bones.
23
Which of these formed when mud or minerals fill in a mold?
wood
cast
skeleton
sap
24
What can scientists learn from fossils?
which plants will go extinct
how Earth formed
what sound animals in the past made
the kinds of animals that lived on Earth in the past
25
What is the basic concept behind relative-age dating of fossils?
upper rock layers were deposited earlier than lower layers
younger fossils contain higher levels of radioactive isotope
lower rock layers were deposited earlier than upper layers
older fossils contain higher levels of radioactive isotopes
