WorksheetsScience Final Exam
Total questions: 27
Worksheet time: 15mins
Name
Class
Date
1.
In the picture above, a boy is trying to pull a dog on a leash, but the dog and the boy are moving in the same direction. Which of the following best describes the forces in this situation?
a)
The forces are balanced, and the net force is zero.
b)
The forces are unbalanced, and the boy’s force is greater.
c)
The forces are unbalanced, and the dog’s force is greater.
d)
The forces are balanced, and the dog is stronger than the boy.
2.
A boy pushes on a parked car with a force of 200 N. The car does not move. How much work does the boy do on the car?
a)
200 N
b)
200 J
c)
zero
d)
can't be determined
3.
Which of the following processes requires the most work?
a)
A 10 kg weight rests on a table.
b)
A person holds a 1 kg weight still with outstretched arms.
c)
A person lifts a 100 kg weight 1 m off the floor.
d)
A 1 kg ball is rolled across the floor at a constant speed for a distance of 10 m.
4.
The upward force on an object falling through the air is ____.
a)
air resistance
b)
Inertia
c)
gravity
d)
terminal velocity
5.
The graph shows the distance traveled by a vehicle over a certain period of time. Which segment of the graph shows the vehicle moving with the greatest speed?
a)
L
b)
M
c)
N
d)
O
6.
The table above shows experimental data collected when four cars moved along a straight- line path. According to the data which car moved with a constant acceleration of 2 m/s2?
a)
Car Q
b)
Car R
c)
Car S
d)
Car T
7.
Which graph represents an object at rest?
a)
F
b)
G
c)
H
d)
J
8.
A group of students found igneous rocks near a campsite. The presence of igneous rocks is most likely evidence of
a)
deposition of sediments
b)
past volcanic activity
c)
erosion of surface rocks
d)
heat and pressure
9.
Which of the following is TRUE about when mountains have developed on earth?
a)
All mountains on earth today were present when the earth formed.
b)
Mountains have been developing continuously since the earth formed and mountains are still developing today.
c)
Mountains have developed since the earth formed, but only occasionally.
d)
Mountains developed for a while after the earth first formed, but no new mountains are developing today.
10.
Plate A and Plate B represent what type of plate boundary?
a)
Transform Fault Boundary
b)
Convergent Boundary
c)
Divergent Boundary
d)
Sea Floor Spreading
11.
Using the diagram above, which of the following sets of data could be used to find the speed of plate B?
a)
Distance Plate A moved in 1 year
b)
Distance and direction Plate A moved
c)
Distance Plate B moved in 1 year
d)
Distance and direction Plate B moved
12.
True or False: SCl is the chemical formula for Sodium Chloride.
a)
True
b)
False
13.
True or False: MgO is the chemical formula for Magnesium Oxide.
a)
True
b)
False
14.
True or False: KBr is the chemical formula for Potassium Bromide.
a)
True
b)
False
15.
True or False: LiCl is the chemical formula for Lithium Fluoride.
a)
True
b)
False
16.
Identify which letter in the model of a Boron atom represents a neutron.
a)
W
b)
X
c)
Y
d)
Z
17.
Using the diagram of the Boron atom above which of the following best describes the atom?
a)
Dense nucleus surrounding an electron cloud filled with mostly empty space
b)
Nucleus filled with mostly empty space surrounding a dense electron cloud
c)
Dense nucleus consisting of protons and neutrons surrounded by an electron cloud
d)
Dense nucleus consisting of protons and electrons surrounded by an electron cloud
18.
The nucleus of an atom contains neutrons and protons. The protons have a positive charge and repel each other. Which of the following describes the force that holds the protons together?
a)
Strong nuclear force
b)
Weak nuclear force
c)
Strong gravitational force
d)
Weak gravitational force
19.
Which of the following compounds is most likely to be part of living organisms?
a)
C6H12O6
b)
BF3
c)
MoCl2
d)
CsI
20.
According to the periodic table which of the following atoms represent a carbon atom?
a)
A
b)
B
c)
C
d)
D
21.
Mr. Jones’ eighth grade class is studying physical and chemical changes. Each group of students is given safety goggles, a lab apron, two 3- by 5- inch colored index cards, a match, and a cup of bleach. Using the supplies given, one piece of paper must undergo a chemical change and the other must undergo a physical change.
Group 1 predicts that folding an index card into a different shape will result in a chemical change. Which step of the scientific process is this?
Group 1 predicts that folding an index card into a different shape will result in a chemical change. Which step of the scientific process is this?
a)
observation
b)
conclusion
c)
experiment
d)
hypothesis
22.
Mr. Jones’ eighth grade class is studying physical and chemical changes. Each group of students is given safety goggles, a lab apron, two 3- by 5- inch colored index cards, a match, and a cup of bleach. Using the supplies given, one piece of paper must undergo a chemical change and the other must undergo a physical change.
A chemical change could best be demonstrated by
A chemical change could best be demonstrated by
a)
burning the index card.
b)
leaving the index card unchanged.
c)
cutting the index card in half
d)
folding the index card.
23.
A volunteer firefighter living in northern Michigan received an emergency fire call on a March morning. A cold front had recently passed through the area causing air temperature to drop to below freezing and causing some ice on the roadways. As the fireman started his car, he noticed that there was frost on the windshield and he could “see his breath.” When he arrived, he noticed that snow near the building had melted and frozen again as ice.
Heat from the fire caused snow near the building to melt. Once the fire was put out, the melted snow began to freeze, forming a layer of ice. Which of the following best describes the changes that took place?
Heat from the fire caused snow near the building to melt. Once the fire was put out, the melted snow began to freeze, forming a layer of ice. Which of the following best describes the changes that took place?
a)
Melting is a physical change and freezing is a
chemical change.
b)
Melting is a physical change and freezing is a
physical change.
c)
Melting is a chemical change and freezing is a
physical change.
d)
Melting is a chemical
change and freezing is a chemical change.
24.
When heated, oxygen reacts with copper to form copper oxide.
If this reaction occurs in a sealed container, will the mass of the container and everything in it increase, decrease, or stay the same and why?
If this reaction occurs in a sealed container, will the mass of the container and everything in it increase, decrease, or stay the same and why?
a)
The mass will stay the same because the number of each kind of atom stays the same.
b)
The mass will decrease because two substances combine to form one substance.
c)
The mass will increase because a new kind of molecule is formed.
d)
More information is needed to tell if the mass will change.
25.
Which of the following is the correct order in the organization of life from least to most complex?
a)
Organelle-cell-tissue-organ-organ
system-organism
b)
Organism-cell-tissue-organ-organ
system-organelle
c)
Organ-organ
system-cell-tissue-organelle-organism
d)
Organelle-tissue-organ-cell-organ
system-organism
26.
A biologist examines different specimens through a microscope. Which of the following organelles would NOT be observed in an animal cell?
a)
Cell membrane
b)
Nucleus
c)
Cell wall
d)
Mitochondria
27.
Which of the following kinds of cells perform basic functions such as making molecules for growth?
a)
Plant cells, but not animal cells
b)
Animal cells, but not plant cells
c)
Both plant cells and animal cells
d)
Neither animal cells nor plant cells
100 %
