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Worksheets8th Grade Science Comprehensive Review
Total questions: 35
Worksheet time: 1hrs 2mins
Name
Class
Date
1.
a)
The toy train speeds up while going forward and then slows down.
b)
The toy train slows down while going forward and then moves backward.
c)
The toy train moves forward at a constant speed, slows down, and then stops.
d)
The toy train moves forward at an increasing speed, stops, and then moves forward.
2.
A teacher rubbed a match against a piece of sandpaper. The match started to burn. Which statement best describes the energy changes that occurred?
a)
The chemical energy stored in the match changed to thermal energy and light energy.
b)
The thermal energy stored in the match changed to light energy and chemical energy.
c)
The light energy and thermal energy stored in the match changed to mechanical energy.
d)
The light energy and thermal energy stored in the match changed to chemical energy.
3.
Which way is the object moving?
a)
left
b)
right
c)
down
d)
up
4.
If this train is travelling east, in which direction will the tree appear to move to the passenger?
a)
east
b)
west
c)
north
d)
south
5.
What forces are acting on this ball?
a)
Force of the hill
b)
Friction
c)
Gravity
d)
All of the above
6.
(1.1) The strongest point on a magnet is located
a)
In the magnetic field
b)
Center of the magnet
c)
At the Poles (close)
d)
At the Poles (further away)
7.
(1.3) Based on this field line diagram, the two charges are:
a)
Attracting and unequal in magnitude
b)
attracting and equal in magnitude
c)
repelling and equal in magnitude
d)
repelling and unequal in magnitude
8.
(1.9b) Use the picture to answer the question. Which statement is correct about the energy of the arrow in positions P and Q?
a)
The arrow has only elastic potential energy at Q
b)
The arrow has only elastic potential energy at P
c)
The arrow has both elastic potential energy and kinetic energy at P
d)
The arrow has only elastic potential energy both at P and Q
9.
Which point has the most potential energy?
a)
G
b)
f
c)
b
d)
a
10.
Which 2 letters have the most kinetic energy
a)
W & Y
b)
X & Z
11.
What is the correct order (starting from the surface) of Earth's layers?
a)
crust, outer core, inner core, mantle
b)
mantle, outer core, inner core, crust
c)
crust, mantle, outer core, inner core
d)
outer core, inner core, crust, mantle
12.
Which wave can only go through solids?
a)
P
b)
S
c)
Longitudinal
d)
Normal
13.
What type of boundary is this?
a)
Divergent
b)
Transform
c)
Convergent
d)
What is a boundary?
14.
What happens to the age of the rock as you move farther away from the mid-ocean ridge?
a)
gets older
b)
gets younger
c)
stays the same
d)
the poles reverse
15.
Which of the following is NOT evidence to support the theory of plate tectonics?
a)
Fossils
b)
Mountains
c)
Glaciers
d)
Sand Erosion
16.
A fossil's location in the Earth's strata can help us know if it is older or younger than other fossils found in the strata.
a)
True
b)
False
17.
The diagrams shows a natural process that weathers rock.
Which statement best explains why this process results in weathering?
Which statement best explains why this process results in weathering?
a)
frozen water acts as a solute
b)
water expands when it freezes
c)
the mass of water increases when it freezes
d)
frozen water dissolves most types of rock
18.
Deltas are mainly created by the process of -
a)
deposition
b)
weathering
c)
waves
d)
erosion
19.
Which rock layer in the diagram seems to be the oldest?
a)
F
b)
E
c)
B
d)
A
20.
Which of the following correctly lists the layers in order from oldest to youngest?
a)
A, B, C, D, E
b)
E, B, C, D, A
c)
E, D, C, B, A
d)
C, B, A, D, E
21.
What is the absolute age of a rock?
a)
The age determined by the things around it.
b)
The age of an igneous rock.
c)
The age determined by radioactive dating.
d)
The time it takes for 1/2 of the radioactive atoms to decay in an element.
22.
The trees these moths used to live on were white, but have been covered in soot from coal factories. Which moth will be more successful in this environment?
a)
Dark moth
b)
Light moth
c)
Both will be equally successful
d)
Neither will be successful
23.
An error in DNA copying that results in a new trait
a)
Homeostasis
b)
Mutation
c)
Natural Selection
d)
Selective Breeding
24.
What process is being shown in this image?
a)
Variation
b)
Natural Selection
c)
Selective Breeding
d)
Homeostasis
25.
These moths are all the same species. The differences between their wings is an example of ________________
a)
Natural Selection
b)
Variation
c)
Homeostasis
d)
Extinction
26.
How many parents do you have in asexual reproduction?
a)
1
b)
3
c)
2
d)
4
27.
How much DNA do you receive from one parent in sexual reproduciton
a)
25%
b)
50%
c)
75%
d)
100%
28.
Pea plants are genetically diverse. They reproduce _______.
a)
sexually
b)
asexually
29.
The process on the left is:
The process on the right is:
The process on the right is:
a)
Left: meiosis
Right: meiosis
Right: meiosis
b)
Left: meiosis
Right: cloning
Right: cloning
c)
Left: mitosis
Right: meiosis
Right: meiosis
d)
Left: mitosis
Right: mitosis
Right: mitosis
30.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
31.
What is the phenotype of the offspring? (A-Brown hair; a-blond hair)
a)
50 % Brown Hair and 50% Blond Hair
b)
25 % Brown Hair and 75% Blond Hair
c)
75 % Brown Hair and 25% Blond Hair
d)
0% Brown Hair and 100% Blond Hair
32.
If hemophilia is a sex-linked recessive trait, what genotype would individual IV-2 have?
a)
XBXb
b)
XbXb
c)
XBY
d)
XbY
33.
There are no carriers for Huntington's Disease- you either have it or you don't. Is Huntington's disease caused by a dominant or recessive trait?
a)
Dominant
b)
Recessive
34.
Does this pedigree show a dominant or recessive trait?
a)
Dominant
b)
Recessive
35.
These occur in the asthenosphere and are thought to cause the tectonic plates above to move.
a)
convection currents
b)
ocean currents
c)
spreading plate
d)
density currens
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