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Worksheets8th Grade Science Cumulative Quiz
Total questions: 35
Worksheet time: 2hrs 45mins
Name
Class
Date
1.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
2.
The particles that are found in the nucleus of an atom are
a)
neutrons and electrons
b)
electrons only
c)
protons and neutrons
d)
protons and electrons
3.
Atoms are mostly filled with?
a)
electrons
b)
empty space
c)
protons
d)
mass
4.
What element is displayed in the atom model?
a)
Helium
b)
Hydrogen
c)
Calcium
d)
Lithium
5.
What element is represented in this Bohr Model?
a)
Carbon
b)
Hydrogen
c)
Aluminum
d)
Lithium
6.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
7.
Which of the following is a compound?
a)
Co
b)
O2
c)
C
d)
CO2
8.
How many atoms are there TOTAL in:
H2SO4
H2SO4
a)
6
b)
5
c)
7
d)
3
9.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
d)
B=2
10.
Which of the following models best demonstrates a balanced chemical equation?
a)
F
b)
G
c)
H
d)
J
11.
Which is NOT an indication of a chemical change?
a)
temperature change
b)
formation of a precipitate
c)
shape change
d)
production of light
12.
A clear liquid from a flask is poured into another clear liquid in a beaker. Which of the following results of this procedure would indicate a new substance was formed?
a)
The level of the substance in the beaker is higher after the other liquid is added.
b)
A yellow solid forms and then settles to the bottom of the beaker.
c)
Small white crystals are left behind in the flask that held the first liquid.
d)
The mass of the combined liquids is greater than either original liquid.
13.
A student places a piece of a potato into a container of hydrogen peroxide. One observation the student makes is that bubbles form around the potato. The presence of bubbles might indicate the formation of a new substance because bubbles -
a)
could show that a gas is forming.
b)
always rise to the top of a liquid.
c)
are almost always perfectly spherical.
d)
usually burst after a few minutes.
14.
Wind turbines and windmills convert what energy to another?
a)
Kinetic to electric
b)
Gravitational potential to electric
c)
Mechanical to potential
d)
Thermal to sound
15.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
16.
On a roller coaster, where is maximum potential energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
17.
On a roller coaster, where is maximum kinetic energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
18.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________.
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
19.
Energy transformations occur when...
a)
energy is created through conduction
b)
energy changes from one form to another
c)
two forces slide together that are touching
d)
a chemical reaction takes place
20.
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
21.
The roller coaster cart has the most gravitational potential energy at position-
a)
W
b)
X
c)
Y
d)
Z
22.
what kind of heat is happening when the sun heats your body
a)
conduction
b)
convection
c)
density
d)
radiation
23.
heat always travels from _____ to ______ objects
a)
hot to cold
b)
cold to hot
c)
cold to cold
d)
hot to hot
24.
This is a lava lamp. When the light bulb heats the wax, the wax rises. When the wax cools, it falls. This cycle of rising/falling is an example of:
a)
Conduction.
b)
Convection.
c)
Radiation.
d)
Melting
25.
Emma warms her hands by holding a mug of warm milk. How is heat transferred to her hands?
a)
by condensation
b)
by radiation
c)
by convection
d)
by conduction
26.
What does this graph represent?
a)
Constant speed
b)
Slowing Down
c)
Not moving
d)
Speeding Up
27.
A baker uses oven mitts to protect his hands when removing a hot tray from the oven. Which mode of heat transfer is prevented by the use of the mitts?
a)
condensation
b)
conduction
c)
convection
d)
radiation
28.
If these boys are pulling with the same amount of force. What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
29.
Which of the following objects has the least acceleration?
a)
a. an empty shopping cart pushed with a hard force
b)
b. a full shopping cart pushed with a hard force
c)
c. an empty shopping cart pushed with a light force
d)
d. a full shopping cart pushed with a light force
30.
You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.
a)
20N
b)
40N
c)
10N
d)
70N
31.
What is the net force?
a)
10 N
b)
0 N
c)
25 N
d)
1 N
32.
What is the net force?
a)
400 N Up
b)
400 N Down
c)
- 400 N Down
d)
800 N Down
33.
An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains this situations
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
d)
Conservation of momentum
34.
How does Newton’s third law explain how a rocket takes off?
a)
The rocket’s acceleration is positive, while the gasses acceleration is negative but the direction is the same.
b)
The rocket is at rest until ignition.
c)
The hot gasses move in one direction, while the rocket moves in the opposite direction but with equal force.
d)
Newton's 3rd Law of motion does not apply here
35.
You are carrying a lunch tray when you bump into the edge of a table. Although the tray did not tip, your milk falls off of the front of the tray. Which law mostly applies here?
a)
Newton's
1st
Law of Motion
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
3rd
Law of Motion
d)
Law of Conservation of mass
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