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Chapter 6 History of Earth Flashcards | StudBud
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Chapter 6 History of Earth
Chapter 6 History of Earth
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Chapter 6 test review. Here are your answers to the test!!!
Flashcards
40 cards
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Practice quiz
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Host live
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Questions
40
Answers
1
Continents move around the globe due to...
earth quakes
volcanic eruptions
plate tectonics
mind power
2
Means "recent life"
Cenozoic
Mesozoic
Paleozoic
Precambrian
3
Oxygen from photosynthesis formed the ozone during this era.
Cenozoic
Paleozoic
Precambrian
Mesozoic
4
Unstable atoms decay
within a couple of seconds
over billions of years
each at their own rate
all at the same rate
5
Past mass extinctions were most likely occurred as a result of
Exposure to UV radiation
Ozone destruction
Global climate change
oxygen pollution
6
Do humans have opposable big toes
YES
NO
7
Why did Homo erectus have a larger brain than Homo habilis
Ate meat
Ate dirt and twigs
Ate grubs and worms
Ate roots and berries
8
What main characteristic distinguishes human-like organisms from other primates?
All of the above
Walking upright on two legs
Vertical pelvis to support upright skeleton
Bipedalism
9
What characteristic if found in ALL primates
Opposable big toes
Large brains
Binocular vision
Unibrows
10
Cyanobacteria carried out photosynthesis and released oxygen from the oceans
Cenozoic
Mesozoic
Paleozoic
Precambrian
11
What is absolute dating?
A fossil found in layers of bedrock
A definite date for Friday night
A cast or mold of an organism
Comparing stable/unstable atoms in a fossil
12
(Half life 1.3by: 8g) How much time has passed when 1g remains?
9.3 by
2.6 by
3.6 by
3.9 by
13
What is relative dating?
Dating your first cousin
A possible date for Friday night
A fossil found in a farm field
Looking at layers where a fossil is found
14
(Half Life) If an element decays at a rate of 1.3by, how much of 8g is left after 2.6by?
2 grams
8 grams
4 grams
1 gram
15
Present day humans are classified as...
Homo erectus
Homo habilis
Homo australopithecus
Homo sapiens
16
Dinosaurs are the most well-known creature of this era.
Precambrian
Cenozoic
Paleozoic
Mesozoic
17
Means ancient life
Paleozoic
Precambrian
Cenozoic
Mesozoic
18
Large mammals: mastodons, saber-tooth cats, giant sloths
Cenozoic
Mesozoic
Precambrian
Paleozoic
19
Eras depicted in the geologic time scale are characterized by...
The type of primate in existence at the time
The age of the Earth in increments of one billion years
The type of animal that dominated Earth at the time
Major climatic changes of the Earth
20
What was the giant land mass called?
Laurasia
Big Land Mass
Gondwanaland
Pangaea
21
Which is NOT a characteristic of Cro-Magnons?
Look just like present day humans
Cave paintings and carvings
Lived after the Neanderthals died out
Complex social groups
22
Long arms, short legs, their name means "Southern Man Ape"
Australopithecine
Homo habilis
Homo sapien
Mr. Chase
23
(Half life 1.3by: 8g) How many half-lives occurred when 1g is left?
1 half life
3 half-lives
2 half-lives
4 half-lives
24
Where is it believed that early man evolved from?
Americas
Asia
Africa
Antartica
25
Earth's first pollution was
carbon dioxide
CFC's
radioactive waste
oxygen
26
All major plant groups appear EXCEPT flowering plants
Precambrian
Cenozoic
Mesozoic
Paleozoic
27
As many as 90% of all marine species died out.
Cenozoic
Mesozoic
Precambrian
Paleozoic
28
Which is NOT a characteristic of Neanderthal?
Used fire
Couldn't communicate
Wore clothes
Male bonded clans
29
What will the continents look like in 150 million years?
All at the North Pole
Moving much more quickly
Arranged very differently
Be in the same place
30
Who was the Canadian scientist that had the theory of plate tectonics?
Wilson
Wegener
Washington
Wagner
31
How much of an 8 gram sample would be left after 1 half life?
2 grams
4 grams
8 grams
1 gram
32
Cone-bearing seed plants formed large forests
Precambrian
Paleozoic
Mesozoic
Cenozoic
33
Scientists estimate the age of the Earth to be around
4.6 billion years
3.8 billion years
4.4 billion years
10 billion years
34
Small mammals survived extinction of THIS era
Precambrian
Mesozoic
Cenozoic
Paleozoic
35
Which hominids lived in Europe and went extinct about 30,000 years ago.
Homo erectus
Homo sapiens
Autralopithecus afarenis
Neanderthals
36
Many types of birds and flowering plants appear.
Precambrian
Mesozoic
Cenozoic
Paleozoic
37
Lemurs belong to the family of...
Prosimians
Cro-Magnon
Hominids
Australopithecine
38
What is the main difference between Cro-Magons and present day humans?
Smaller brains
Thicker & heavier bones
Short legs & Long arms
Dumber than we are today
39
After the mass extinctions of the Paleozoic era, what type of animal lived on?
Mammals
Amphibians
Birds
Reptiles
40
What term is given to organisms that are human-like?
Sasquatch
Humanoids
Hominids
Primates
