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Worksheets8th grade science review
Total questions: 80
Worksheet time: 1hrs 6mins
Name
Class
Date
1.
A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
2.
A person’s body is thrown outward as a car rounds a curve on a highway.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
3.
Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
4.
A picture is hanging on a wall and does not move.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
5.
Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more inertia.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
6.
Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
7.
Gravitational potential energy depends on the ________ and ________ of the object.
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction
8.
When you stretch a rubber band, you are storing __________ energy.
a)
kinetic
b)
potential
c)
none of the above
d)
all of the above
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.
How much pontential energy is at the top of a hill on a rollar coaster ride
a)
100%
b)
50%
c)
0%
d)
20%
12.
Can energy be destroyed
a)
no
b)
yes
13.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
14.
As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?
a)
Both the potential energy and kinetic energy decrease
b)
The potential energy decreases while the kinetic energy increases
c)
The kinetic energy decreases while the potential energy increases
d)
Bothe the potential energy and kinetic energy increase
15.
Energy can be _____________ or changed from one type to another.
a)
destroyed
b)
transferred
c)
created
d)
ignored
16.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
17.
Magnets have a north and a south ___________
a)
shape
b)
color
c)
pole
d)
region
18.
Iron, Nickel and cobalt are all __________________ materials
a)
Shiny
b)
poles
c)
magnetic
d)
cold
19.
Which object would a magnet attract?
a)
a glass bottle
b)
a piece of paper
c)
a metal paper clip
compass
compass
d)
a rubber eraser
magnetic field
magnetic field
20.
Which of the following is true about a bar magnet?
a)
Its magnetic field is strongest near its center.
b)
It is surrounded by a magnetic field.
c)
The north pole is stronger than the south pole.
d)
The south pole is stronger than the north pole.
21.
Which of the following is not a good conductor?
a)
Copper
b)
Silver
c)
Aluminium
d)
Plastic
22.
Particles with opposite charges ____________ and particles with same (or like) charges ____________.
a)
attract, repel
b)
repel, repel
c)
attract, attract
d)
repel, attract
23.
What is the difference between a conductor and insulator?
a)
conductor: allows electricity to flow easily.
insulator:does not allow electricity to flow easily
b)
conductor: does not allow electricity to flow easily
insulator: allows electricity to flow easily
24.
This picture best illustrates the construction of a(n)
a)
magnet
b)
electromagnet
c)
series circuit
d)
parallel circuit
25.
What is the inner most layer of Earth?
a)
core
b)
outer core
c)
inner core
d)
asthenosphere
26.
Which layer of Earth is solid and why?
a)
The inner core is solid because of movement of the outer core.
b)
The inner core is solid because of the freezing temperatures.
c)
The inner core is solid because of the extreme pressure from the other layers.
d)
The outer core is solid because of the extreme pressure from the other layers.
27.
Which layers make up the mantle?
a)
crust, inner core, outer core
b)
mesosphere, asthenosphere, part of lithosphere
c)
bottom part of the mantle
d)
crust only
28.
Which layer is plastic and has the consistency of silly putty allowing movement?
a)
asthenosphere
b)
lithosphere
c)
mesosphere
d)
crust
29.
Which two layers, one right below the other, causes movement that can create an earthquake?
a)
crust and core
b)
mantle and core
c)
lithosphere and core
d)
lithosphere and asthenosphere
30.
Which of Earth's layers is made of SOLID iron and nickel?
a)
crust
b)
mantle
c)
outer core
d)
inner core
31.
Name the two types of crust
a)
Land and Sea
b)
Oceanic and Land
c)
Land and Continental
d)
Oceanic and Continental
32.
Choose the statement that is TRUE
a)
Oceanic crust is thinner than Continental Crust and denser than Continental Crust
b)
OOceanic crust is thicker than Continental Crust and denser than Continental Crust
c)
Continential crust is thinner than OceanicCrust and denser than Oceanic Crust
d)
Continential crust is thicker than Oceanic Crust and denser than Oceanic Crust
33.
Which layer of the earth is completely Liquid?
a)
Crust
b)
Mantle
c)
Outer Core
d)
Inner Core
34.
What creates the Earth's Magnetic Field?
a)
The spinning of the mantle around the crust
b)
The spinning of the outer core around the inner core
c)
The spinning of the inner core around the outer core
d)
The spinning of the oceanic crust around the mantle
35.
What increases as you go deeper inside the interior of the earth?
a)
Heat, Pressure, and Density
b)
Heat, Pressure, Volume
c)
Volume, Mass, Acceleration
d)
Mass, Volume, Heat
36.
Identify B
a)
Crust
b)
Mantle
c)
Outer Core
d)
Inner Core
37.
Waves wash sand onto land until a beach is formed
a)
Mechanical Weathering
b)
Chemical Weathering
c)
Erosion
d)
Deposition
38.
Glaciers dropping rock and sand to form moraines (deposition of debris)
a)
Weathering
b)
Erosion
c)
Deposition
39.
Rain washing away soil from a hillside
a)
Weathering
b)
Erosion
c)
Deposition
40.
Flood water pounding against a canyon wall and wearing it down
a)
Weathering
b)
Erosion
c)
Deposition
41.
What is the major cause of weathering and erosion?
a)
wind
b)
ice
c)
glaciers
d)
moving water
42.
What is erosion?
a)
the breaking down of rocks into sediments
b)
the movement of sediments from one location to another
c)
the dropping off of sediments
d)
the flooding of a river
43.
What is weathering?
a)
the breaking down of rocks into sediments
b)
the movement of sediments from one location to another
c)
the dropping off of sediments
d)
the flooding of a river
44.
What is deposition?
a)
the breaking down of rocks into sediments
b)
the movement of sediments from one location to another
c)
the dropping off of sediments
d)
the flooding of a river
45.
What is the name for broken up pieces of rock?
a)
dirt
b)
weathering
c)
sediments
d)
delta
46.
The Law of Superposition states that younger rocks lie _________ older ones.
a)
above
b)
below
c)
mixed within
d)
all the time to
47.
The Law of Crosscutting states that a fault or intrusion is __________ than the bodies of rock it cuts through.
a)
younger
b)
older
c)
funnier
d)
nastier
48.
Which layer is the oldest ?
a)
A
b)
E
c)
D
d)
F
49.
Which letter indicates an igneous intrusion?
a)
A
b)
C
c)
D
d)
E
50.
A is older than layer C
a)
TRUE
b)
FALSE
51.
The fault is older than layer B.
a)
TRUE
b)
FALSE
52.
Relative dating determines the...
a)
precise age of fossils
b)
age of fossils compared to others
c)
climate fossils survived in
d)
movement of continents
53.
What causes tectonic plates to move along the Earth's surface?
a)
wind
b)
ocean currents
c)
convection in the mantle
d)
expansion of the Earth
54.
What type of boundary occurs when two plates move away from each other?
a)
transform
b)
subduction
c)
convergent
d)
divergent
55.
What forms at a divergent boundary between two oceanic plates?
a)
rift valley
b)
mountain
c)
mid-ocean ridge
d)
trench
56.
What type of boundary occurs when two plates move toward each other?
a)
convergent
b)
divergent
c)
transform
d)
lateral
57.
What forms at a convergent boundary between a continental plate and an oceanic plate?
a)
volcanoes
b)
rift valleys
c)
faults
d)
mid-ocean ridges
58.
A rift valley occurs at a ____________ boundary.
a)
divergent
b)
convergent
c)
transform
d)
horizontal
59.
What is the process in which hot molten rock rises, then cools and sinks back to the core?
a)
plate tectonics
b)
continental drift
c)
convection
d)
divergence
60.
A trench forms at a _________ boundary.
a)
convergent
b)
divergent
c)
transform
d)
vertical
61.
Mountains form at a ___________ boundary.
a)
transform
b)
divergent
c)
convergent
d)
subduction
62.
What type of boundary occurs when two plates slide past each other?
a)
divergent
b)
transform
c)
lateral
d)
convergent
63.
A fault forms at a _________ boundary.
a)
transform
b)
divergent
c)
horizontal
d)
convergent
64.
What type of boundary is shown at A?
a)
transform
b)
convergent
c)
divergent
d)
subduction
65.
What is happening at point B?
a)
subduction
b)
a divergent boundary
c)
convection
d)
an earthquake
66.
What is the process in which two plates move toward each other but one sinks under the other?
a)
subduction
b)
convection
c)
divergence
d)
transformation
67.
Rock made of layers of compressed sediments
a)
metamorphic rock
b)
igneous rock
c)
sedimentary rock
d)
school house rock
68.
What type of fossil is this?
a)
Mold
b)
Cast
c)
Preserved remains
d)
Trace fossil
69.
In which kind of rock do we usually find a fossil?
a)
sedimentary rock
b)
rock candy
c)
hard rock
70.
How old do Paleontologists believe the Earth is?
a)
2015 years old
b)
3.6 billion years old
c)
4.6 billion years old
d)
4.6 million years old
71.
Which is an example of a trace fossil?
a)
animal tracks
b)
coprolite
c)
burrows
d)
all of the answers given here
72.
What is a recessive allele?
a)
A trait that is always shown (capital letter)
b)
A trait that can be hidden (lower case letter)
c)
Alleles that are the same
d)
Alleles that are different
73.
What is a dominant allele?
a)
A trait that is always shown (capital letter)
b)
A trait that can be hidden (lower case letter)
c)
Alleles that are the same
d)
Alleles that are different
74.
The physical traits of an organism
a)
Teletype
b)
Genotype
c)
Mesotype
d)
Phenotype
75.
The genes of an organism
a)
Mesotype
b)
Phenotype
c)
Teletype
d)
Genotype
76.
This means Same Gene
a)
Dominant
b)
Recessive
c)
Heterozygous
d)
Homozygous
77.
This means Different Gene
a)
Dominant
b)
Recessive
c)
Homozygous
d)
Heterozygous
78.
____________________ are used to make predictions about the genotypes and phenotypes of offspring.
a)
Dominant Squares
b)
Punnett Grids
c)
Punnett Squares
d)
Recessive Squares
79.
What is Bb?
a)
Homozygous
b)
Heterozygous
c)
Recessive
d)
Alleles
80.
How many are tall?
a)
0
b)
1
c)
2
d)
4
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