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TRANSCRIPT
Name: ___________________________SBI3U Introduction to EvolutionNotes Handout
What is a Scientific Theory?- In science, a theory is a statement that makes and explains
_____________ about a group of _______________ and ______________- It explains observations and allows us to make predictions about the
natural world- Scientific theories are not _______________: they can be revised in the
light of new evidence - Examples of theories: ___________________________
Theory of Evolution:- A scientific theory that helps us to understand the ___________________
and ___________________ of life on Earth- Evolution is not a theory about the origin of life. It is a theory
explaining ____________________________________________________________________________________
-- Considered to be a “unifying” theory
because it answers many of our questions: o Why do humans have an appendix if
we don’t use it?o Why is there fossil evidence of
organisms that no longer exist?
Evolution is not linear...- Evolution is a complex, meandering tree of
variable _________________- These populations branch and change over
_________________________________.- Modern species do not evolve into other
modern species, but rather split repeatedly into multiple lineages.
Evolution & Catholicism • Misconception:
__________________________________________________________.• Evolution is regarded by scientists (of Catholic and other religious
beliefs) as scientific fact, just as gravity is…• The Church has openly accepted that evolutionary theory in no way
challenges the belief that God is ultimately responsible for all life• Pope Francis, 2014: “[Evolution] does not contradict the divine
intervention… the evolution in nature is not opposed to the notion of
Creation, because evolution presupposes the creation of beings that evolve.”
Some Common Misunderstandings:
FALSE: Humans are descended from monkeys.
TRUE: _________________________________________________________________________
- Humans and chimpanzees share more than 90% of their __________________________
- Scientists believe this common ancestor existed 5-8 millions years ago, when the species diverged into 2 separate lineages; one evolving into _____________________________, the other into ___________________________(____________________).
FALSE: Evolution is the progressive improvement of species
TRUE: ________________________________________________________________________.
- Evolution does not create ____________________________ and eliminate the weak.
- Rather, there are many organisms that are not perfectly adapted to their environment.
- For example, sharks do not have a gas bladder to control their buoyancy in the water.
- Evolution can only randomly favour the ______________________________________________________________!!!
Scientific Investigation Activity:- See the worksheet titled “Scientific Investigation Activity” provided.- Video link: https://www.pbs.org/video/deep-look-lizards/