Dawn of Humanity Worksheet
Anthropology & Human Origins
FOSSIL RECORD UNIT
Dawn of Humanity
Early Hominin Evolution, Fossil Discoveries, & Key Adaptations
Name:
Date:
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Instructions: Carefully analyze each question and select the single best scientific answer by filling in the corresponding circle.
01
On what continent do we believe humans first began to evolve?
A East Africa
B South Africa
C Asia
D Western Europe
02
What primitive pre-human species do we believe baby Selam is from?
A Homo habilis
B Homo erectus
C Australopithecus afarensis
D Sahelanthropus tchadensis
03
How did the scientists determine Selam's age at time of death?
A Scientists used carbon dating to determine how old she was.
B Scientists looked at her adult teeth growing inside her bone with a CT scan.
C Scientists measured her skeleton’s height.
D Scientists estimated her weight.
04
Who is Selam very similar to?
A Turkana Boy
B Toumaï
C Homo floresiensis
D Lucy
05
Why do scientists believe Australopithecus afarensis became bipedal?
A To reach higher fruits in trees
B To save energy
C To be able to hunt better
D To be able to swim better
Early Human Evolution • Student Study Sheet Page 1 of 2
Dawn of Humanity • Continued
PART II: ADAPTATIONS & COGNITION
06
About when do scientists believe early humans diverged from the apes?
A About 350,000 years ago
B About 1 million years ago
C About 6 million years ago
D 50 years ago
07
How did scientists determine that Toumaï walked on two legs?
A By how its skull connects to its spine (eyes pointed straight ahead)
B By looking at the shape of his pelvis
C By observing fossilized footsteps showing two legs
D By examining his brain case size
08
In modern humans, how long in years does it take for our brain to fully mature?
A 20 years
B 10 years
C 5 years
D 1 year
09
In comparison, how long does it take a chimp's brain to mature?
A 20 years
B 10 years
C 5 years
D 1 year
10
Who or what hominin is thought to have made these first stone tools?
A Homo erectus
B Homo sapiens
C Homo neanderthalensis
D Homo habilis
Bonus Synthesis: Scientific Reasoning
Short Response
Why was having a longer childhood and delayed brain maturation advantageous for early humans compared to other primates?
Early Human Evolution • Student Study Sheet Page 2 of 2