Transcript TEK 4.10B

TEK 4.10B
Draw conclusions about
“what happened before”
using fossils or charts and
tables.
Study the diagram below.
soil
sandstone
conglomerate
1
shale
2
limestone
Fossil 1 is probably….
A. younger than fossil 2
soil
sandstone
B. older than fossil 2
C. formed in
metamorphic rock
D. formed in igneous
rock
conglomerate
1
shale
2
limestone
The correct answer is A.
Fossil number 1 is
younger than
fossil number 2.
The bottom layer
of rock
(limestone)
formed before
the layer of
shale. Fossil 1 is
in the shale.
soil
sandstone
conglomerate
1
shale
2
limestone
B, C, and D are
incorrect
B. older than
fossil 2
C. formed in
metamorphic
rock
D. formed in
igneous rock
soil
sandstone
conglomerate
because
1
2
shale
limestone
B
The layer of limestone was
formed before the layer of
shale.
C
Sandstone , conglomerate,
shale, and limestone are
sedimentary rocks.
D. Fossil number 1 is in shale
which is a sedimentary rock.
Fossils were found in these four
layers of rock.
1
2
3
4
Which animal probably lived the
longest time ago?
A. 1
1
B. 2
2
3
C. 3
D. 4
4
The correct answer is D.
The top layer
represents the
youngest layer of
rock.
1
2
3
Fossil 4 is in the
bottom layer of rock
which formed first.
4
A. 1
Answers A, B, and C
are incorrect
B. 2
C. 3
1
2
3
These fossils are
all in younger
layers of rock.
4
The most likely place to find
a fossil is in ________ rock.
A
A
Sedimentary rock
B
B
Volcanic rock
C
Igneous rock
D
Metamorphic rock
The correct answer is A.
A
Sedimentary rock
Most fossils form when a dead
plant or animal is buried quickly by
sediments. As the sediments
harden the remains become
trapped in rock and form a fossil.
Answers B, C, and D are
wrong.
B
Volcanic
rock
C
Igneous
rock
D
Metamorphic
rock
These answers are
incorrect because …
Volcanic and Igneous
rocks are usually
formed when
melted rock
hardens.
Metamorphic rocks
are formed when
sedimentary,
igneous, or other
metamorphic rocks
are subjected to
high heat and
pressure.
You find a fossil of a dinosaur in a
rock layer.
What can you
infer about
the other
fossils in the
same rock
layer?
A. The other fossils in that
layer were formed much
later than the dinosaur
fossil.
B. The other fossils in that
layer are about the same
age as the dinosaur fossil.
C. The plant found in the
lowest laye was food for
the dinosaur.
D. The fish fossil is older
than the dinosaur.
The correct answer is B.
B. The other fossils
in that layer are
about the same
age as the
dinosaur fossil.
Since the leaf
and the shell
fossils are in
the same layer
as the dinosaur
fossil, they
probably are
around the
same age as
the dinosaur.
These answers
because
are incorrect
A.
The other fossils in
that layer were formed
much later than the
dinosaur fossil.
The fossils would be
in a different layer
if they were formed
at a different time.
C.
One of the other
fossils in that layer
was left by a plant.
There is not enough
information to to make
this inference.
D.
The fish fossil is older
than the dinosaur.
The fish is in a younger
layer of rock, so it is
younger than the dinosaur.