In the Cenozoic Era we find evidence of

ice ages, and drifting continents

Preserved fossils form when an organism does not decay because

it is covered by tar, ice or tree sap

What has the fossil records shown us about the Earth

How life has changed from simple to complex

life developed beyond bacteria and moved onto land

studbud

Fossils and Geologic Time 8th Grade

20 termsStudBud Administration5,173 plays

8th Grade Science

Flashcards20 cardsFPractice quizPHost liveL

Questions 20

Answers

1
Scientists identify which rocks are older by using the
Law of Sublimation
Law of Substance
Law of Rock Postions
Law of Superposition
2
Fossils give evidence about the evolution of Earth's
surface features
all of the above
climate
Life
3
An organism cells are replaced by minerals turning it to stone is a
Preserved fossil
cast fossil
trace fossil
petrified fossil
4
The Law of Superposition says that the rocks at the top are the
youngest
middle aged
oldest
formed by cooling lava
5
The longest time in the Earth's history is
Paleozoic Era
Quaternary Period
Mesozoic Era
Precambrian Time
6
These fossils provide evidence of an ancient organism's activitives
carbon fossils
mold fossils
trace fossils
cast fossils
7
We are living the
Miocene Epoch and The Quanternay Period
Cenozoic Era and Quaternary Period
The Mesozoic Era and the Quaternary Period
8
In the Mesozoic Era
complex life forms existed
Volcanoes erupted and reptiles rule
only bacteria lived in the oceans
small mammals filled the land after the dinosaurs died
9
Based on the rock layer where the fossil was found its ______ age is known.
relative
age in billions of years
age in millions of years
absolute
10
When sediment fills in the dent in sediment a __ forms
preserved fossil
mold fossil
cast fossil
carbon fossil
11
Trace fossils show us
how they moved
What they ate
all of the above
Where they went
12
Fossils are the __ or __ of previous organisms
traces, tracks
petrified, tracks
preserved, traces
molds, casts
13
A carbon Fossil is when only what remains
bone
carbon
impression
trace
14
Radioactive dating is used to determine a fossil's __ age.
age in millions of years
relative
absolute
age in billions of years
15
In the Cenozoic Era we find evidence of
bacteria moving onto the land
humans and dinosaurs lived at the same time
ice ages, and drifting continents
many mass extinctions
16
What type of fossil is found when an organism leaves a dent in the sediment
cast fossil
carbon fossil
trace fossil
mold fossil
17
Each Era ends with
new and improved evolved life form
mass extinction
Volanic Activity
A meteor strike
18
Preserved fossils form when an organism does not decay because
when it is buried beneath the earth
when it is covered by lava
When it is buried in sediment
it is covered by tar, ice or tree sap
19
What has the fossil records shown us about the Earth
That life has remained constant
How life has changed from complex to simple
How life began
How life has changed from simple to complex
20
In the Paleozoic Era
is the geologic time we are currently living in
has no fossil record because the earth was moltan
reptiles took over and ruled the earth
life developed beyond bacteria and moved onto land

Fossils and Geologic Time 8th Grade Flashcards | StudBud