WorksheetsCh. 19 History of Life
Total questions: 29
Worksheet time: 11mins
Name
Class
Date
1.
A researcher who studies fossils to know about ancient life is a ____________.
a)
geneticist
b)
biochemist
c)
paleontologist
d)
physicist
2.
During which era did dinosaurs dominate?
a)
precambrian
b)
paleozoic
c)
cenozoic
d)
mesozoic
3.
A _________ is evidence of an organism that lived long ago.
a)
strata
b)
fossil
c)
half-life
d)
radioactive isotope
4.
The atmosphere in ancient Earth was composed of:
a)
mostly carbon dioxide & little to no oxygen
b)
mostly oxygen & nitrogen
c)
mostly water vapor & oxygen
d)
mostly sulfur & little to no oxygen
5.
Earth formed ________ years ago.
a)
4,600
b)
2 million
c)
4.6 billion
d)
1,200
6.
______________ were the first organisms on Earth.
a)
humans
b)
dinosaurs
c)
multicellular eukaryotes
d)
single-celled prokaryotes
7.
During the ___________ era there was a large increase in diversity of life forms followed by the largest mass extinction.
a)
Jurassic
b)
Cenozoic
c)
Paleozoic
d)
Precambrian
8.
What types of molecules were Miller & Urey able to produce through their experiments?
a)
inorganic
b)
amino acids
c)
ATP
d)
all of the above
9.
Mammals dominated during this era.
a)
cretaceous
b)
Triassic
c)
cenozoic
d)
precambrian
10.
Francesco Redi disproved spontaneous generation of large organisms when he…
a)
Created lightening in a jar
b)
Left meat in a covered jar & no maggots grew
c)
Created the atmosphere of ancient Earth
d)
Bacteria did not grow in a flask with broth
11.
Which of the following theories explains the origin of eukaryotic cells?
a)
Big Bang
b)
Hardy-Weinberg Equilibrium
c)
Quantum
d)
Endosymbiont
12.
During which era did modern humans first appear on Earth?
a)
cenozoic
b)
paleozoic
c)
mesozoic
d)
precambrian
13.
____________ disproved spontaneous generation of bacteria when bacteria didn't grow in a closed flask containing broth with nutrients.
a)
Francisco Redi
b)
Louis Pasteur
c)
Miller & Urey
d)
Alexander Oparin
14.
Today's atmosphere is composed of:
a)
mainly carbon dioxide & water vapor
b)
mainly nitrogen & oxygen
c)
mostly water vapor & methane
d)
none of the above
15.
Which statement about the first life forms is true?
a)
heterotrophic
b)
lived in oceans
c)
anaerobic
d)
all of the above
16.
__________ is the idea that living organisms only come from living organisms
a)
spontaneous generation
b)
biogenesis
c)
half-life
d)
isotope
17.
_________ is the time line of Earth’s history.
a)
Geological Timescale
b)
Big Bang
c)
Relative Dating
d)
Radiometric Dating
18.
________ is the amount of time for ½ of the original radioactive sample to decay.
a)
radioactive isotope
b)
chemical life
c)
biological life
d)
half-life
19.
Method used to date fossils in which the decay of radioactive isotopes is measured.
a)
radiometric dating
b)
paleomagnetism
c)
relative dating
d)
radioactivity
20.
Idea that nonliving materials can produce life.
a)
spontaneous generation
b)
Endosymbiont theory
c)
biogenesis
d)
Primordial Soup Theory
21.
The half-life of chromium-51 is 28 days. If the sample contained 510 grams, how much chromium would remain after 56 days?
a)
51 g
b)
127.5 g
c)
3 half-lives
d)
255 g
22.
__________ uses the order of rock layers to date fossils.
a)
radiometric dating
b)
carbon dating
c)
radioactive dating
d)
relative dating
23.
Relative dating gives a/an _______ age of fossils whereas radiometric dating gives a/an _______ age.
a)
absolute, relative
b)
approximate, relative
c)
relative, absolute
d)
precise, accurate
24.
How have life forms changed over time?
a)
become more simple
b)
become less diverse
c)
become more complex & diverse
d)
decreased in numbers
25.
Which of these could be a fossil?
a)
bone
b)
foot print
c)
part of a leaf
d)
all of the above
26.
Determine the half-life of Iodine-131 using the graph.
a)
8 days
b)
16 days
c)
24 days
d)
50%
27.
What is Pangaea?
a)
a massive volcano
b)
another term for mass extinction
c)
the name of a radioactive isotope
d)
a supercontinent
28.
Why did atmospheric oxygen levels rise over time?
a)
heterotrophs released oxygen via cellular respiration
b)
consumers released oxygen as a byproduct
c)
water droplets split into their individual atoms
d)
autotrophs released oxygen via photosynthesis
29.
Which correctly lists the four eras in order from the earliest to the latest?
a)
cenozoic, mesozoic, paleozoic, precambrian
b)
precambrian, paleozoic, mesozoic, cenozoic
c)
mesozoic, precambrian, paleozoic, cenozoic
d)
triassic, precambrian, paleozoic, mesozoic
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