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