WorksheetsNatural Selection
Total questions: 18
Worksheet time: 12mins
Name
Class
Date
1.
Which type of fossil is this?
a)
imprint
b)
whole body
c)
cast
2.
Which type of fossil is this?
a)
cast
b)
whole body
c)
imprint
3.
Which type of fossil is this?
a)
imprint
b)
cast
c)
whole body
4.
Which radioactive element is most likely used to date once living things?
a)
Uranium
b)
Nitrogen-14
c)
Carbon-14
5.
Which of the following is an example of a half-life?
a)
25
b)
5000 years
c)
1/2
6.
What is the half life of Carbon-14?
a)
15 seconds
b)
5, 730 years
c)
4.5 million years
d)
25 days
7.
Which is the most accurate method of dating fossils?
a)
radioactive
b)
relative
c)
studying layers in the earth
8.
Which method determines a fossil's approximate age by examining which layer of earth is is found in?
a)
radioactive
b)
relative
c)
chemical
9.
Which of the following is NOT a reason for no complex life forms early in Earth's history?
a)
toxic gases
b)
high CO2 levels
c)
wide temperature swings
d)
too many plants
10.
Evolution typically happens...
a)
in a few weeks
b)
over millions of years
c)
never
d)
in 100 years
11.
Which of the following is NOT considered evidence of evolution?
a)
similar DNA
b)
similar development
c)
similar behavior
d)
vestigial structures
12.
Bird's beaks evolve mainly due to the type of ___________________ available.
a)
food
b)
water
c)
shrubs
d)
mates
13.
If an organism can't adapt fast enough, this might happen.
a)
hibernate
b)
stay the same
c)
live longer
d)
become extinct
14.
Darwin said that the number of offspring an organism has ___________________
a)
stays the same
b)
is more than can survive
c)
is less than needed
15.
Darwin said that within a species there will be _________________________
a)
nothing different
b)
variation/differences
16.
Organisms with differences/variations that are helpful will ______________________
a)
live longer
b)
become extinct
c)
show no change
17.
What can happen to a species over time if some of the organisms have an advantage?
a)
The population will decrease
b)
The population will become extinct
c)
The population will slowly increase
18.
Why don't we see horses with individual toes/paws anymore?
a)
It isn't an advantage
b)
It was too helpful
c)
It helped them run faster
100 %
