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SLT Pre/Post Test Physical Science

Total questions: 75

Worksheet time: 28mins

Name
Class
Date
1.
    1.What question did the scientists who collected this data want to answer?
a)
Are there more earthworms in the soil in the spring or in the fall?
b)
What is the effect of plowing soil on the number of earthworms?
c)
How is the size of earthworms affected by the seasons?
d)
Does plowing soil affect how fast earthworms grow?
2.
A scientist who wants to study the effects of a new fertilizer on plants would probably=
a)
give each experimental group the same amount of the fertilizer.
b)
not worry about measuring the amount of fertilizer used.
c)
include a control group that received no fertilizer.
d)
use different numbers of plants in each group.
3.
You and your friends want to determine if fertilizer helps a Barrel Cactus grow a flower (you have a cactus at home, and you really want it to grow a flower). You suspect that fertilizer will help. You buy two cacti. You plant Cactus A in normal soil with no fertilizer and plant the other in a pot with fertilizer. After summer comes and goes, no flower grows. In fact, the cactus with fertilizer died. What is the question you and your friends are investigating?
a)
If the fertilizer caused the cactus to flower. 
b)
If the fertilizer caused the cactus to die. 
c)
If the fertilizer made the cactus die, but no generalizable conclusions can be drawn. 
d)
If the fertilizer will help the cactus produce a flower.
4.

What is the precise reading (in milliliters) of the liquid volume?

a)

65

b)

66

c)

67

d)

68

5.

Darlene places a bolt in the graduated cylinder to find its volume. Its starting volume is 45.5mL. After she puts the bolt in the graduated cylinder the water level rose to 65.5mL. What is the volume of the bolt?

a)

10 cubic centimeters

b)

19.5 cubic centimeters

c)

20.5 cubic centimeters

d)

21 cubic centimeters

e)

20

6.

Carla needs exactly 100.00 grams of sulfur powder for an experiment. The picture shows the mass on the scale so far. She did not zero the scale before starting. Carla knows that the weighing paper weighs 3.65 grams. How much more sulfur powder does Carla need?

a)

4.5 grams

b)

5.1 grams

c)

5.0 grams

d)

3.45 grams

7.

Kelsey is measuring a sample of iodine crystals for an experiment. What is the mass of the iodine and weighing paper?

a)

A) 162.1 grams

b)

A) 162 grams

c)

A) 163 grams

d)

A) 164 grams

8.
Kevin is identifying samples of three unknown metals. One of the properties he will use for identification is the density. The table shows the mass and volume for each sample. Kevin knows that the units of density are grams per cubic centimeter (g/cm3). Calculate the density for sample 3 and find the answer below. 
a)
A)  10.49 g/cm3
b)
A)  10.51 g/cm3
c)
A)  10.55 g/cm
d)
A)  10.49 g/cm
9.
Mr. Lee wants to confirm the metal used in a ring with a mass of 26.055 g. The volume of the ring is 1.35 cubic centimeters (cm3). What is the metal composition of the ring?
a)
A)  Sterling silver
b)
 18-ct white gold
c)
Pure gold
d)
=Platinum
10.
A student measured the velocities reached by an electric cart over time and recorded the data in the table shown. The student graphs the data, putting time in the horizontal (x) axis and the velocities reached on the vertical (y) axis. Which aspect of the graph reflects the acceleration of the cart?
a)
 y-intercept
b)
 y-axis scale
c)
slope
d)
 midpoint
11.
a)
Graph A
b)
Graph B
c)
Graph C
d)
Graph D
12.
What do the data in this graph show?
a)
Unplowed soil has more earthworms than plowed soil.
b)
Plowed soil has more earthworms than unplowed soil.
c)
Plowing of soil has no effect on the number of earthworms.
d)
The number of earthworms cannot be predicted
13.
a)
Graph A
b)
Graph B
c)
Graph C
d)
Graph D
14.
What was the net loss in glacier ice thickness between the years 1970 and 2000?
a)
8m
b)
6m
c)
7m
d)
10m
15.
The graph shows energy production in the United States in 1967 and 2007 for several sources of energy. Which conclusion is supported by the graph?
a)
A)  In 1967 more energy was produced in oil than in 2007
b)
A)  More energy was produced in 2007 than in 1967 in every category.
c)
A)  In 2007, more energy was produced from renewable energy sources than from fossil fuels.
d)
A)  People in the United States were more concerned about conserving energy in 1967 than they were in 2007.
16.
A group of students researched the melting points of some representative elements and made up cards containing the symbol and melting point of each element. They then grouped the cards together to make the portion of the periodic table shown. Which conclusion best fits the group’s data?
a)
Elements in periods 4,5, and 6  have melting points that increase and then decrease with increasing atomic number. Seeming not to fit a pattern
b)
A)  Group 2 metals have melting points that decrease with increasing atomic number.
c)
A)  Elements in a group have melting points that decrease with increasing atomic number.
d)
A)  Elements in all groups  metals have melting points that decrease with increasing atomic number
17.
A group of students measures the period of a pendulum while varying the pendulum length and mass. Their results are shown in the table. Which conclusion is best supported by their data?
a)
 Increasing the mass of a pendulum decreases its period.
b)
Increasing the mass of a pendulum does not affect the period.
c)
Increasing the length of a pendulum decreases its period. 
d)
Increasing the length and the mass of a pendulum causes an increase in its period
18.
Sun Li investigates the time for 10 grams of table salt to dissolve in 100 milliliters of water. She sets up six beakers, using the information in the table.  In which beaker would salt dissolve the slowest?
a)
1
b)
2
c)
3
d)
4
19.
Four student groups pour equal masses of sugar into equal volumes of water. The table lists the differences in conditions for each group. Which group would support the Hypothesis that increased surface area and heat will dissolve solutes faster?
a)
1
b)
2
c)
3
d)
4
20.

Jordan has a mixture of two solids that he has to separate. The solids are small granules that are the same size but different colors. She knows that the silver granules are aluminum and the white granules are salt. Which procedure is the Most reliable way to separate the mixture?

a)

Dissolve mixture in a universal solvent and filter. Then evaporate solvent to retrieve the salt.

b)

Dissolve mixture in a universal solvent and filter.

c)

Pass a magnet over the mixture.

d)

Sift the mixture through fine wire mesh.

21.
A  mixture of coffee grounds and coffee being poured through filter paper. Which property of the coffee grounds is being used to separate them out from the molecules?
a)
A)  Size of particles
b)
A)  polarity of the molecules
c)
A)  Size of pores in the filter
d)
A)  Temperature of the water
22.

The graph shows the temperature changes in a sample of water that is heated steadily from -40°C. Which process is happening in section 2 of the graph?

a)

A) Ice is getting warmer.

b)

A) Ice is melting.

c)

A) Ice is in the solid phase.

d)

A) Ice is changing to vapor and then to a liquid.

23.
Tony found an old iron cannonball that had rust on it. He determined that the iron had been exposed to air and water, which caused the rust. Which statement explains the type of change represented by this reaction?
a)
The reaction represents a chemical change because the rust is just a mixture of water and iron.
b)
The reaction represents a chemical change because the iron oxide has a different melting point than iron.
c)
The reaction represents a chemical change because both the original cannonball and the rusted cannonball are solids.
d)
The reaction represents a chemical change because iron oxide is a new substance formed on the cannonball.
24.
When a Bunsen burner is lit; why is the presence of a flame considered to be an indication of a chemical reaction?
a)
A)  A flame indicates a change of energy.
b)
A)  A flame indicates a phase change.
c)
A)  A flame indicates new physical energy is forming.
d)
A)  A flame indicates a change in chemical energy.
25.
In science class, a teacher heats a sample of white wax. As the wax warms, it turns to a clear liquid. When the teacher allows the wax to cool, it hardens again, retaining its original color and mass. Heating the wax is classified as a physical change because it does not
a)
cause a permanent change of energy .
b)
change how atoms are bonded to one another 
c)
change the mass in the wick.
d)
involve the destruction of molecules.
26.

Phillip watches a burning log in the fireplace. He makes these observations:


I. There is a strong smell of smoke.

II. The fire gives off heat.

III. Heat waves appear in the air above the log

IV. Light is emitted where there are flames.

V. Ashes form from the logs.


Which of Phillip’s observations are conclusive evidence that the burning log undergoes chemical changes and not just a physical change?

a)

A) observations I and V only

b)

A) observations II , III, and V only

c)

A) observations I, III, and V only

d)

A) observations I, IV, and V only

27.

Janelle is studying a sample of peroxide. She knows the chemical name for peroxide is Dihydrogen dioxide. What is the chemical formula for peroxide?

a)

H2O2

b)

2HO2

c)

HO

d)

2HO

28.

What is the chemical formula for hepta-carbon penta-hydrogen tetra-oxide ?

a)

C7H5O4

b)

C6H10O6

c)

C6H9O6

d)

C6H10O9

29.

Which inequality correctly compares the masses of electrons, protons, and neutrons?

a)

p+ > n0

b)

n0 < e-

c)

p+ > e-

d)

e- > n0

30.
Which table correctly shows the locations of the P+, e-, n0 subatomic particles of an atom?
a)
P+ and n0 are in the nucleus and the e- are in the outer valence shell
b)
 P+ and n0 are in the valence shells and the e- are in the nucleus
c)
P+, e- , and n0 are in the nucleus and the e- are in the nucleus
d)
e- , and n0 are in the nucleus and the P+ are in the nucleus
31.

Holly is examining an isotope of manganese. She determines that each atom has 36 protons, 36 electrons, and 52 neutrons. What is the mass number for this manganese isotope?

a)

72 amu

b)

88 amu

c)

52 amu

d)

104 amu

32.

A Carbon ion in a compound has a -4 charge. How many electrons does the Boron ion have?

a)

2

b)

7

c)

8

d)

10

33.

How does an atom get a -2 charge and become an ion?

a)

They gain 2 protons.

b)

They gain 2 electrons.

c)

They lose 2 protons.

d)

They lose 2 electrons.

34.

Transition metals are located in the _______ of the periodic table while the Nobal gasses are on the ___________?

a)

left, right

b)

right, left

c)

middle, right

d)

right, middle

35.

The diagram shows an outline of the periodic table with four elements labeled. Which element is a non-metal?

a)

1

b)

2

c)

3

d)

4

36.

A Bohr model of an unknown element shows 7p+ . What element is being diagrammed in the model?

a)

A) Oxygen

b)

A) Lithium

c)

A) Nitrogen

d)

A) Carbon

37.

What formula represents hexacarbon monoxide?

a)

6CO

b)

6CO2

c)

C2O

d)

C2O2

38.

Which formula represents the ionic compound Sodium Chloride?

a)

NaCl

b)

NaCl2

c)

NaCL

d)

NaCl2

39.

Jeff used a piece of indicator paper to test an unknown liquid. The result of his test is shown below the pH scale. Based on the pH scale, what is the Best description of the liquid?(About pH of 8)

a)

A) Very acidic

b)

A) Weakly acidic

c)

A) Very basic

d)

A) Weakly basic

40.

The reaction equation showing the formation of iron (III) oxide is not balanced. _?_N3 +_?_H3 --> _?_NH3

Which set of coefficients, when inserted in the blank spaces in order, will balance the equation?

a)

1, 3, 3

b)

1, 2, 2

c)

2, 1, 1

d)

2, 2, 1

41.
Use the reaction equation to answer the question.      
 6CO2 + 6H2O-->C6 H12 O6  + 6O2
The reaction equation shows a common chemical reaction. Where does this reaction commonly occur?
a)
in the lungs of an animal
b)
in the mouth as humans exhale carbon dioxide
c)
in the leaves of plants
d)
in animal digestive systems
42.
Which statement provides a velocity?
a)
A plane flew at 50 miles per hour.
b)
A plane flew east for 2 hours.
c)
A plane flew at 50 miles per hour, East.
d)
A plane flew 50 miles per hour for 2 hours.
43.
The diagram identifies several properties of a system in which a toy car is in motion. Which property is not required to determine the velocity of the toy car, nor required to determine the speed of the toy car?
a)
50 grams
b)
East
c)
1.5 meters per second 
d)
Distance/ unit of time
44.
The graph illustrates the velocity of a bus over time. Which choice would correctly describe the acceleration of the bus during the same time period?
a)
A graph that is inverse to the illustration
b)
A graph that has a decreasing slope
c)
A S curve graph
d)
 A J curve graph that is like the illustration
45.
A car has an initial velocity of 7 meters per second (m/s). It accelerates at a rate of 6 m/s2 for 10 seconds. What is the final velocity of the car?
a)
67.5 m/s
b)
67 m/s
c)
66 m/s
d)
56 m/s
46.
If the same force is applied to each of these balls, which one will have the LEAST acceleration? 
a)
A baseball with a mass of 150.0g
b)
A bowling ball with a mass of 7000.3g
c)
A golf ball with a mass of 100.75g
d)
A tennis ball with a mass of 100.5g
47.
Sophia and Amanda are both standing still on roller skates. Sophia pushes on Amanda’s back. Sophia has more mass than Amanda. Which statement best describes how Sophia and Amanda will move?
a)
A)  Sophia and Amanda will both move forward.
b)
A)  Sophia will move backward and Amanda will move forward with more acceleration than Sophia.
c)
A)  Sophia will not move and Amanda will move forward with more acceleration than Sophia.
d)
A)  Sophia will move backward and Amanda will not move.
48.
Two forces act on a rock as shown in the diagram. Based on Newton’s second law, F = ma, what is the acceleration of the rock?
a)
1.25 m/s2 to the right
b)
1.5 m/s2 to the left
c)
1 m/s2 to the right             
d)
1.25 m/s2 up
49.

Ms. Kendall has a Newton’s cradle on her desk. She lifts the first ball on the left and then drops it. The initial result is the movement of only the rightmost ball away from the others. Which element of this system is conserved in the cradle during this movement of the balls?

a)

Speed and momentum

b)

Velocity and momentum

c)

Momentum only

d)

Acceleration and momentum

50.
A force of 14 Newtons is used to push a 5-kilogram object a distance of 23 meters. What is the amount of work exerted on the object?
a)
600 joules       
b)
400 joule         
c)
300 joules
d)
322 joules
51.
During a strength and fitness contest, each participant must move 300 fifty-kilogram weights from the floor to a shelf 2 meter above the floor. The participant with the fastest time wins the contest. If all the participants finish the task, which statement is true about the winner compared with the rest of the participants?
a)
The winner used more power but did less work.
b)
The winner used less power but did the same amount of work.
c)
The winner used the same amount of power but did more work.
d)
The winner used more power and did the same amount of work.
52.
When a box is lifted 8.5 meters, its potential energy increases by 383.7 joules. What is the mass of the box? Use:g = 9.8 m/s2
a)
4.7 kilograms
b)
4.0 kilograms
c)
4.5 kilograms
d)
4.6 kilograms
53.
An elevator does 12,000 newton·meters of work in 11.0 seconds. What is the power used by the elevator?
a)
 1,090 watts
b)
1,000 watts
c)
1,100 watts
d)
1,009 watts
54.
The diagram shows a roller coaster car at the top of the track (point 1) and at the bottom (point 2). Which statement correctly compares the kinetic and potential energy of the car at points 1 and 2?
a)
The kinetic energy is highest at point 1 and lowest at point 2. The potential energy is lowest at point 1 and highest at point 2.
b)
The kinetic energy is highest at point 2 and lowest at point 1. The potential energy is lowest at point 2 and highest at point 1.
c)
Both the kinetic energy and the potential energy are highest at point 1 and lowest at point 2.
d)
Both the kinetic energy and the potential energy are highest at point 2 and lowest at point 1
55.
A block is moved along a surface through a series of numbered points at different heights, as shown in the diagram. At which point on the surface will the block have the lowest potential energy?  PE = w x H
a)
1 only 
b)
2 and 3
c)
3 and 4
d)
5 and 6
56.
A pendulum is pulled back and released. Which statement best describes the changes in the weight’s Kinetic  energy (KE) ?
a)
 Except for small losses to friction, there are no changes to the KE of the weight
b)
At the top of each swing, the weight has no KE
c)
At the top of each swing, the weight has the maximum KE.
d)
The PE and KE both increase as the weight swings down, and both decrease as the weight swings up.
57.
Turbojet engines on an airplane burn jet fuel to spin turbines, which generate thrust. Which statement correctly identifies the Second energy transformation that occurred in the jet engine?
a)
Potential energy is transformed into kinetic energy, which is then transformed into thermal energy
b)
Chemical energy is transformed into thermal energy, which is then transformed into mechanical energy.
c)
Potential energy is transformed into electromagnetic energy, which is then transformed into thermal energy.
d)
Chemical energy is transformed into nuclear energy, which is then transformed into mechanical energy.
58.
You watch the wick of a candle burn. The wick releases thermal energy as it burns. Which type of stored energy is transformed into thermal energy during this process?
a)
mechanical
b)
electromagnetic
c)
nuclear
d)
chemical
59.
Which statement correctly describes where humans typically get their energy? 
a)
Chemical energy is energy stored in the bonds between atoms of the food particles.
b)
Chemical energy is the kinetic energy of moving and vibrating molecules of our food.
c)
Chemical energy is the result of mass converted to energy in the nucleus of an atom of our food.
d)
Chemical energy is energy stored as the result of stressing or stretching a substances in our food.
60.
Josh rubs his hands together as fast as he can to keep them warm at the football game. His hands are warm because of the transformation of? 
a)
chemical energy into mechanical energy.
b)
mechanical energy into magnetic energy.
c)
mechanical energy into thermal energy.
d)
potential energy into thermal energy.
61.
This diagram shows a sound wave moving through air. Which statement describes the formation of molecules in region B? 
a)
Molecules are reaching their crest
b)
Molecules have created a wave trough
c)
This is the region where molecules are compressed in the air
d)
This is the region where molecules are rarefacted in the air
62.
Which line segment in the diagram defines the trough of the wave?
a)
Line 1
b)
Line 2
c)
Line 3
d)
Line 4
63.
A light shines directly onto a mirror. Which diagram shows the path of the reflected light?
a)
A
b)
B
c)
C
d)
D
64.
You buy a lizard at the new pet store. The owner tells you to buy a ultra violet light because you will need it to keep the lizard warm. You decide to use a regular bulb from home, so you can save some money. A week later the lizard dies. You remember that you science teacher taught you that the difference between these two  types of light is primarily due to the fact that ultraviolet light has 
a)
greater energy.
b)
greater speed.
c)
less mass
d)
less charge
65.
Darlene runs a comb through her dry hair to get an excess amount of electrons on the comb. She then places the charged comb next to a thin stream of falling water. Which statement correctly describes how the comb will affect the stream of water?
a)
The stream of water is unaffected because it is neutral.
b)
The stream of water bends toward the comb because the comb induces a charge in the water.
c)
The stream of water bends away from the comb because the charge on the comb repels the electrons in the water.
d)
The stream of water breaks up into drops as the water is charged by the comb.
66.
When you see lightening you are seeing?
a)
A buildup of static electricity 
b)
Light being split by water vapor acting as prisms 
c)
A buildup of electricity
d)
northern lights
67.
You rub your feet, wearing cotton socks on the carpet floor in hopes of shocking your sister. This should work because,  your cotton socks can produce a buildup of static electricity by 
a)
magnetizing the rod.
b)
Transferring protons.
c)
Transferring electrons.
d)
producing electrons.
68.
All the bulbs shown in the diagram are lit. The light bulb at G is removed. How are the other light bulbs affected by removing light bulb G?
a)
All the other light bulbs go out.         
b)
Both light bulbs E and H go out.
c)
Light bulb H goes out.
d)
Only G goes out.
69.
Which diagram shows how the switches need to be arranged to light only bulb 2?
a)
A
b)
B
c)
C
d)
D
70.

All three lightbulbs are on in this circuit. Then lightbulb 3 burns out. What happens to lightbulbs 2 and 1 as a result?

a)

They both switch off.

b)

Only lightbulb 3 switches off.

c)

Only lightbulb 2 switches off.

d)

They both remain lit.

71.
Derrick is studying the magnetic field generated by a current flowing through a wire. Which diagram correctly shows how to apply the right-hand rule to determine the direction of the magnetic field?
a)
A
b)
B
c)
C
d)
D
72.
In 1862, James Clerk Maxwell deduced that electric waves and magnetic waves traveled at the same speed. He also deduced that combined electric and magnetic waves create
a)
light
b)
electricity.
c)
microwaves
d)
x-rays.
73.

You are taking the temperature for data for your science class, the temperature is 96 degrees. What month do you predict it is?

a)

September

b)

July

c)

May

d)

December

74.
The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?
a)
The more books students read, the lower their English grade.
b)
The more books students read, the higher their English grade.
c)
The fewer books students read, the higher their English grade. 
d)
No relationship exists between the number of books students read and their English grades. 
75.
Dr. Peterson does an experiment to research the growth rate of mice. He has two groups of mice. He feeds one group a type of food and adds chemical A, which is supposed to increase growth rate. The other group he feeds the same food without chemical A added. His research shows that chemical A increases growth rate by 30%. He does the experiment 4 times and comes up with the same result each time.
Dr. Peterson concludes that chemical A does increase the growth rate of mice. Is Dr. Peterson's conclusion supported by scientific knowledge? 
a)
Yes; any study that involves a percentage is based on scientific knowledge.
b)
Yes; his conclusion is supported by evidence from his experiment.
c)
No; science cannot be used to research small animals such as mice.
d)
No; scientific knowledge never comes from research or experiments.

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