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Worksheets8th Grade Final Prep
Total questions: 30
Worksheet time: 18mins
Name
Class
Date
1.
In this process, better adapted organisms survive to pass traits along to offspring.
a)
Evolution
b)
Natural Selection
c)
Extinction
d)
Artifical Selection
2.
The theory of evolution by natural selection means that what is changing over time?
a)
The inherited traits of a population.
b)
The acquired traits of a population.
c)
Hair color and eye color
d)
Attractive features.
3.
Why are advantageous traits more likely to be passed onto offspring?
a)
Because they are more likely to survive and reproduce.
b)
Because they come from dominant alleles.
c)
Because they come from recessive alleles.
d)
Because the trait is an acquired phenotype.
4.
Mutations are a change in what?
a)
DNA
b)
tRNA
c)
genotype
d)
phenotype
5.
Sexual reproduction requires _____ parents and asexual reproduction requires ___ parents
a)
1,1
b)
2,2
c)
2,1
d)
1,2
6.
Which process creates genetically DIFFERENT offspring?
a)
sexual
b)
asexual
7.
When the egg and sperm cells unite, this is called...
a)
Fertilization
b)
Zygote
c)
Embryo
d)
Cell Differentiation
8.
In sexual reproduction offspring look___________from their parent.
a)
Identical
b)
different
c)
the opposite
d)
happy
9.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
10.
What is the goal of reproduction?
a)
to produce offspring that pass on the parents' genes
b)
to make the species more vulnerable to disease
c)
to make exact copies of the same organism
d)
to create new species
11.
Flowers use pollination to
a)
sexually reproduce
b)
transfer nutrients between flowers
c)
asexually reproduce
12.
What is the name of the cell that is formed after the process shown below?
a)
zygote
b)
sperm
c)
egg
d)
bud
13.
This image shows a tool that scientists can use to track how a disease passes through generations of a family. What is the name of this tool?
a)
pedigree
b)
punnett square
c)
genotype
d)
recessive trait
14.
Earth's ______________ causes the day/night cycle.
a)
rotation
b)
revolution
c)
orbit
d)
axis
15.
One revolution of the Earth lasts about _______________________
a)
365 days
b)
24 hours
c)
1 month
d)
3 months
16.
Which type of eclipse blocks the Sun from view?
a)
lunar eclipse
b)
solar eclipse
c)
partial eclipse
d)
apocalypse
17.
What determines the season you experience on Earth?
a)
It depends on whether you are rotated facing the sun or facing away
b)
It depends on how far Earth is from the Sun
c)
It depends on whether your hemisphere is tilted toward or away from the sun
d)
It depends on how close you are to the equator
18.
The word(s) most similar to rotation is
a)
jumping
b)
circling around
c)
spinning
d)
orbitting
19.
What is the name of the imaginary line that passes between the poles of the earth?
a)
equator
b)
axis
c)
latitude
d)
hemisphere
20.
The word eclipse means to block from view. In a solar eclipse, the _________ is blocking the ________ from view
a)
Sun, Moon
b)
Earth, Moon
c)
Moon, Sun
d)
Earth, Sun
21.
We see different Moon phases because of the Moon's
a)
rotation
b)
revolution
c)
eclipse
d)
none of the above
22.
Which is NOT a characteristic of the inner planets?
a)
they are closest to the sun
b)
they are smaller than the outer planets
c)
they are made mostly of gas
d)
They include Mercury, Venus, Earth, and Mars
23.
Gravity is a force that
a)
pulls things down
b)
pulls things together
c)
doesn't exist in space
d)
pushes things apart
24.
The tendency for objects to either stay at rest or stay in motion is called
a)
friction
b)
balanced force
c)
unbalanced force
d)
inertia
25.
When a rocket launches, it pushes on the gas it releases, and the gas pushes back. This demonstrates
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
d)
Newton's fourth law
26.
What type of motion is shown in this image?
a)
rotation
b)
revolution
c)
both rotation and revolution
d)
neither rotation nor revolution
27.
A force of 50 N acts on both a baseball and a bowling ball. Which will accelerate more?
a)
The baseball, because it is smaller
b)
The bowling ball, because it is larger
c)
the baseball, because it has less mass
d)
the bowling ball, because it has more mass
28.
Rainy weather is dangerous because the water and oil on the streets
a)
increases friction
b)
decreases friction
c)
increases inertia
d)
decreases inertia
29.
Friction is a force that only acts on objects in motion
a)
true, because it's caused by rubbing
b)
false, because of static friction
30.
Where does the Moon get its light?
a)
It's on fire
b)
It reflects Earth's light
c)
It creates its own light
d)
it reflects the Sun
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