Cset Science

Front 1

Which of the following defines a salt? A: Onr of the reactant products of an acid and base, B: One of the reactatn of a base and water, C: One of the reactant products of an acid and water, D: Reactant product of a phase transformation

Back 1

A: One of the reactant products of an acid and base

Front 2

Which of the following defines a salt?
a one of the reactant products of an acid an base, b: one of the reactatn products of a base and water, c: one of the reactatn products of an acid and water, d: reactatn product of a phase transformation

Back 2

A: one of the reactant products of an acid and base

Front 3

Atomic number for neutral (un-ionized) atoms as listed in the periodic table refers to: a: the number of neutrons in an atom, b: the number of protons in an atom, c: the number of electrons in an atom, d: both B and C

Back 3

Both B and C

Front 4

Which of the following is a phenomenon involvong the physical properities of a substance? A: Corrosion of irom, B: Burining of wood, C: rocket engine ignition, D: Melting of ice

Back 4

D Melting of ice

Front 5

Isotopes of a given element contain: A: more electrons than protons with equal number of protons, B: more protons than electrons whith equal number of neutrons, C: diffeing number of neutrons, D: unequal number of protons and electorns and equal number of neutrons

Back 5

C differing number of neutrons

Front 6

Newton's second law of motion states that the summation of forces acting on a body is equal to the product of mass and acceleration. Which of the following is a good example of the law's application?
A: Decreased friction between surfaces be means of lubrication, B: potential energy stored in a compressed spring, C: a rocket lifting off at Cape Canaveral with increasing speed, D: Using a claw hammer to pull a nail out with multiplied force

Back 6

C a rocket lifting off at Cape Canaveral

Front 7

Which of the following is most likely to contain the greatest thermal energy?
A: The Pacific Ocean with and average temp of 50 deg, B: A 1g sample of molten metal at 2000 deg F, C: A Bucket of water at 75 deg F, D: Lake Michigan at an average temp of 50 deg F

Back 7

A The pacific ocean with avg temp of 50 deg F

Front 8

A plastic rod is charged by means of rubbing it with a silk cloth. The charging actions involves:
A: transfer of electrons from one body to another
B: Transfer of protons from one body to the other
C: transfer of protons forn one body to another
D: transfer of atoms from one body to the other

Back 8

A: Transfer of electrons forn one body to the other

Front 9

Two charged bodies are brought near to one another. The force each experiences is repulsive. The charge on each body is, therefore:
A: equal to opposite in polarity
B: not necessarily equal and opposite in polarity
C: equal with same polarity
D: not necessarily equal with same polarity

Back 9

D: not necessarily equal with same polarity

Front 10

Which cellular component is responsibel for the regulation of exchanges of substances between a cell and its enviroment?
A: The endoplasmaic reticulum
B: The Cell nucleus
C: the cytoplasam
D: the cell membrane

Back 10

D: the cell membrane

Front 11

Genetic information that needs to move out of the nucleus cannot leave by wat of the DNA, therefore, it is carried out by the?
A: tRNA
B: mDNA
C: tDNA
d: mRNA

Back 11

D: mRNA

Front 12

A nucleotide consists of:
A:sugar, protein, and uracil
B: sugar, phosphate group, and nitrogenous base
c: starchm nitrogenous base and sugar
D: protein, starch and a sugar

Back 12

B: sugar, phosphate group and nitrogenous base

Front 13

Humans have 46 chromosomes in their body cells. How many chromosomes are found in the zygote?
A:2
B: 10
C: 23
D: 46

Back 13

D: 46

Front 14

The order of skin layers from the outside of the body proceeding inward is?
A: stratum corneum, layer of malpighi, dermis
B: stratum corneum layer of malpighi, epidermis
C: dermis, layer of malpighi, stratum corneum
D: dermis, stratum corneum, layer of malpighi

Back 14

A: stratum corneum, layer of malpighi, dermis

Front 15

Darwins Original theory of natural selection asserts that
A: All organisims have descended with modificatation from a common ancestor
B: random genetic drift plays a major role in speciation
C: species characteristics are inherited by means of genes
D: speciation is usually due to gradual accumulation of small genetic changes

Back 15

A: All organisims have descended with modifications from a common ancestor

Front 16

Human body tempature regulation via the skin involves
A: prespiration
B: Transporation
C: Perspiration
D: Sensation

Back 16

C: Perspiration

Front 17

The following reaction describes photosynthesis: CO2 + H20= gluclose + oxygen. It is the means by which:
A: plants produce light energy
B: Plants convert light energy into energy useful in internal processes
C: plants directly consume light energy as food
D: plants warm the atmosphere

Back 17

B: Plants convert light energy into energy useful in internal processes

Front 18

Photosynthesis is a:
A: reduction process where oxygen is reduces by a coenzyme
B: reduction process where hydrogen is oxidized by a coenzyme
C: reduction process where hydrogen is reduced by a coenzyme
D:reduction process where oxygen is oxidized by a coenzyme

Back 18

C: reduction process where hydrogen is reduced by a coenzyme

Front 19

The lunar period is nearest in length to:
A: 24 hours
B: 30 days
C: 365 days
D: 1 week

Back 19

B: 30 days

Front 20

A supernova normally occurs when:
A: a star first intiats fusion
B: galaxies collode
C: the end of a star's lifetime nears, with its nuclear fuel exhausted
D: A wandering comet plunges into the stars interior

Back 20

C: the end of a star's lifetime nears, with its nuclear fuel exhausted

Front 21

The most important factor in Earth's seasonal pratterns is the:
A: distance from the sun to the Earth
B: Earth's rotation period of 24 hours
C: tilting of the Earth's axis
D: moon and associated tides

Back 21

C: tilting of the Earth's axis

Front 22

Metomorphic rocks are:
A: derived from igneous rocks
B: unrelated to igneous rocks
C: a type of sedimentary rock
D: a type of rock not found on this planet

Back 22

A: derived from igneous rocks

Front 23

Which of the following is considered to be evidence for plate tectonics?
A: Continental coastline "fit"
B: Identical fossil evidence at fit locations
C: Intense geological activity in mountanious regions
D: All of the above

Back 23

D: All of the above

Front 24

Sea floor spreading is characterized as:
A: plate spreading with upwelling magma forming ridges
B: plate collisions with associated with associated ridge formation
C: plate spreading with no ridge formation
D: plate collisions with no ridge formation

Back 24

A: plate spreading with upwelling magma forming ridges

Front 25

Ingenous rocks are formed by:
A: magma cooling in underground cells and pockets
B: magma ejected aboveground as lava which cools
C: Layers of sediment collecting and compacting at the bottom of lakes and seas
D: both A and B

Back 25

D: both A and B

Front 26

In descening order of abundance, what is the composition of the Earth's atmosphere?
A: Oxygen, ntrogen, carbon dioxide, trace gases
B: Nitrogen, oxygen, carbon dioxide, trace gases
C: Nitrogen, carbon dioxide, oxygen, traces gases
D: Carbon dioxide, oxygen, nitrogenm trace gases

Back 26

B: Nitrogen, oxygen, carbon dioxide, trace gases

Front 27

1. Which of the following steps in making a
cup of coffee involves a chemical change
in matter?
A. Whole-bean coffee is ground in a
coffee grinder.
B. A burner on a propane stove is
lighted to heat water.
C. Water in a kettle begins to boil.
D. Boiling water is poured through a
filter containing ground coffee.

Back 27

B. A burner on a propane stove is
lighted to heat water

Front 28

Use the section of the periodic table
below to answer the question that
follows.
6
12.01
C
7
14.01
N
8
16.00
O
14
28.1
Si
15
31.0
P
16
32.1
S
32
72.6
Ge
33
74.9
As
34
79.0
Se
50
118.7
Sn
51
121.8
Sb
52
127.6
Te
82
207.2
Pb
83
209.0
Bi
84
(210)
Po
Which of the elements in the section of the
periodic table shown above are likely to
have the most similar chemical properties?
A. Si and Ge
B. C and O
C. Sb and Te
D. N and S

Back 28

A. Si and Ge

Front 29

Which of the following liquids is the most
acidic and will have the lowest pH?
A. milk
B. household ammonia
C. distilled water
D. vinegar

Back 29

D. vinegar

Front 30

C14 is an isotope of C12. Both carbon
atoms have an atomic number of six.
Which of the following is the main
difference between these two types of
carbon atom?
A. The C14 atom has eight neutrons and
the C12 atom has six neutrons.
B. The C14 atom has fourteen electrons
and the C12 atom has twelve
electrons.
C. The C14 atom has eight protons and
the C12 atom has six protons.
D. The C14 atom has fourteen neutrons
and the C12 atom has twelve
neutrons.

Back 30

A. The C14 atom has eight neutrons and
the C12 atom has six neutrons.

Front 31

Use the table below to answer the question that follows.
Line Mass (amu) Charge Location
1 1
1836
negative surrounding
nucleus
2 1 positive nucleus
3 1
1836
positive surrounding
nucleus
4 1 neutral nucleus
Which line in the table above accurately
lists the mass, charge, and location of a
proton?
A. Line 1
B. Line 2
C. Line 3
D. Line 4

Back 31

B. Line 2

Front 32

Which of the following is the best
example of the refraction of light waves?
A. Markings on flowers that are
invisible in normal light can be
seen in ultraviolet light.
B. Deep lakes appear to be blue or
green in color.
C. Sunlight striking a black box will
make the box warmer than the same
light striking a white box.
D. Light passing through raindrops
produces a rainbow.

Back 32

D. Light passing through raindrops
produces a rainbow.

Front 33

Newton's third law of motion states that
for every action there is an equal and
opposite reaction. Which of the following
is the best example of the application of
this law?
A. More fuel is needed to drive a truck
ten miles when it is loaded than
when it is unloaded.
B. An inflated balloon moves through
the air when a jet of air leaves its
neck as it deflates.
C. Less force is needed to pull a sled
over ice than is needed to pull it
over sand.
D. A passenger in a car continues
moving forward when the car
stops suddenly.

Back 33

B. An inflated balloon moves through
the air when a jet of air leaves its
neck as it deflates

Front 34

Which of the following examples best
demonstrates the difference between
thermal energy and temperature?
A. A cup of water at 50°C contains less
thermal energy than a bathtub full of
water at 10°C.
B. The same amount of water loses
heat faster if it is in a tall, narrow
bottle than if it is in a short, wide
bottle.
C. A dark-colored object gets warmer
in the sun than a light-colored
object.
D. A person feels cooler on a cold day
when the wind is blowing.

Back 34

A. A cup of water at 50°C contains less
thermal energy than a bathtub full of
water at 10°C.

Front 35

The stems of a bunch of just-cut white
flowers are immersed in a container of
water to which blue dye has been added.
After 24 hours, 2 tablespoons of salt are
added to the water. Twenty-four hours
later the flowers will most likely appear:
A. wilted and light blue.
B. fresh and white.
C. wilted and white.
D. fresh and light blue.

Back 35

A. wilted and light blue.

Front 36

Which chamber of the heart labeled in the
diagram above is primarily responsible for
pumping blood to most of the organs and
tissues of the body?
A. left atrium
B. left ventricle
C. right atrium
D. right ventricle

Back 36

B. left ventricle

Front 37

Which of the following statements best
explains how carbon plays a central role
in the functioning of biological systems?
A. Carbon actively transports nutrients
and wastes across cell membranes.
B. Carbon insulates nerves because it
has very low electrical conductivity.
C. Carbon combines with a large
number of other elements to form
a variety of useful compounds.
D. Carbon transports oxygen through
the bloodstream to the cells of the
body.

Back 37

C. Carbon combines with a large
number of other elements to form
a variety of useful compounds.

Front 38

Certain species of acacia trees have long
hollow thorns that house stinging ants.
The ants feed on nectar produced by the
tree and attack anything that touches the
tree. The relationship between the ants
and the acacias is an example of:
A. mutualism.
B. parasitism.
C. commensalism.
D. predation.

Back 38

A. mutualism.

Front 39

The energy pyramid is narrower at the top
than at the bottom because organisms at
the higher levels:
A. exploit a narrower range of
environmental resources than the
organisms at the lower levels.
B. are larger and require less energy
per unit of body mass than the
organisms at the lower levels.
C. have less energy available to them
than organisms at the lower levels.
D. are more efficient at producing
energy from sunlight than the
organisms at the lower levels.

Back 39

C. have less energy available to them
than organisms at the lower levels.

Front 40

Which of the following environmental
factors is likely most important in
determining the distribution of the
plant species within the swamp-forest
ecosystem described?
A. carbon dioxide level
B. soil moisture
C. herbivores
D. cloud cover

Back 40

B. soil moisture

Front 41

Some species of aphids can reproduce
asexually under certain conditions.
Female aphids produce other female
aphids without being fertilized by a male.
This asexual reproduction may continue
over many generations during the summer.
In late summer or early fall, male aphids
are produced and sexual reproduction
resumes. Which of the following is most
likely to be an advantage to a female aphid
asexually reproducing during the summer?
A. Competition for food increases in
summer, and the aphid's offspring
aid in defending resources.
B. Unstable environmental conditions
in summer make it difficult for a
female aphid to travel in order to
find mates.
C. A female can replicate her genes
very rapidly by producing large
numbers of identical offspring when
food is plentiful in summer.
D. A female aphid passes down
favorable mutations to her offspring
in the summer when temperatures
are high.

Back 41

C. A female can replicate her genes
very rapidly by producing large
numbers of identical offspring when
food is plentiful in summer.

Front 42

In which of the following cases of cell
division is the amount of genetic material
halved?
A. A bacterium undergoes fission to
produce two cells.
B. Cells in the tail stump of a lizard
divide and produce a new tail after
the original tail is lost to a predator.
C. A cell in the testes of a male
sparrow divides and produces
four sperm.
D. An ovum in a female mouse divides
shortly after being fertilized by a
sperm from a male mouse.

Back 42

C. A cell in the testes of a male
sparrow divides and produces
four sperm.

Front 43

When a seed germinates, its roots will
grow down and its shoots will grow up,
even if the seed is planted upside down.
This downward growth of roots and
upward growth of shoots is due to the
plant's response to:
A. gravity.
B. light.
C. temperature.
D. moisture.

Back 43

A. gravity.

Front 44

The shape of the Milky Way galaxy is
best described as:
A. a flat central disk with rotating
spiral arms.
B. a spherical cloud of uniformly
distributed matter.
C. a long, thin ribbon with ragged
edges.
D. an irregular cluster with multiple
concentrations of matter.

Back 44

A. a flat central disk with rotating
spiral arms.

Front 45

During the Loma Prieta Earthquake of
1989, homes located nearest to San
Francisco Bay generally sustained worse
damage than similar homes further from
the bay. The severity of the damage
sustained by homes nearest to the bay is
most likely due to the:
A. presence of active faults that
roughly parallel the shoreline.
B. intensity of secondary shaking near
the shore from oscillating waves in
the bay.
C. existence of sediments and fill near
the shoreline.
D. rate at which earthquake waves
accelerate as they pass through
water.

Back 45

C. existence of sediments and fill near
the shoreline.

Front 46

A scientist would use a barometer in
order to compare which of the following
conditions between two localities?
A. wind speed
B. humidity
C. temperature
D. air pressure

Back 46

D. air pressure

Front 47

Summer days in parts of California are
occasionally interrupted by afternoon
thunderstorms. Which of the following
statements best describes the typical
conditions that lead to these summer
thunderstorms?
A. High winds lift large quantities of
dust into the air, providing particles
around which water can condense
into thunderheads.
B. Fast-moving winds in the upper
atmosphere mix warm and cold air,
creating turbulence and causing
powerful updrafts and downdrafts.
C. A cold front moving through the
area forces warm air up, causing
condensation of water and the
formation of thunderheads.
D. Humid conditions in a fast-moving
warm front increase the electrical
conductivity of the air, promoting
lightning discharge.

Back 47

C. A cold front moving through the
area forces warm air up, causing
condensation of water and the
formation of thunderheads.

Front 48

Certain lakes in arid environments, such
as the Great Salt Lake in Utah and the
Dead Sea in Israel, are extremely saline.
Other lakes in similarly arid environments
contain fresh, rather than salt, water.
Which of the following is the most
accurate explanation for the high salinity
of saltwater lakes?
A. Saltwater lakes are fed by underground
hot springs that contain very
high levels of dissolved mineral
salts.
B. Rivers that flow into saltwater lakes
drain sparsely vegetated and easily
eroded rock and soil that contain
large quantities of mineral salts.
C. Water does not drain out of
saltwater lakes and is removed
primarily by evaporation, which
leaves salt behind.
D. Saltwater lakes are deep and cold,
and cold water is able to hold a
greater quantity of salt in solution
than warm water.

Back 48

C. Water does not drain out of
saltwater lakes and is removed
primarily by evaporation, which
leaves salt behind.

Front 49

A researcher is preparing to study the
effects of logging on the streams and
lakes of an area in the Pacific Northwest.
Which of the following types of information
would be a primary source of data
to the researcher in preparing for this
investigation?
A. newspaper articles about logging
methods and their potential for
environmental damage
B. reports by an environmental group
detailing silting of a stream caused
by logging in a forest in Maine
C. topographic maps of the area
showing logging roads and areas
of clear-cutting
D. U.S. Department of Interior's report
on recreational use of the land in
the area

Back 49

C. topographic maps of the area
showing logging roads and areas
of clear-cutting

Front 50

If the number 360 is written as a product of its prime factors in the
form a3b2c, what is the numerical value of a + b + c?
A. 10
B. 16
C. 17
D. 22

Back 50

A: 10

Front 51

Use the diagram below to answer the question that follows.
What is the sum of the shaded areas in the three circles above if each
circle represents one unit?
Circle with 8 pieces and 5 shaded
Circle with 6 pieces and 1 shaded
Circle with 7 pieces and 3 shaded
A. 1 9/21
B. 1 15/42
C. 1 37/168
D. 1 205/336

Back 51

C. 1 37/168

Front 52

Use the problem below to answer the question that follows.
For a bake sale, Marianne has baked p chocolate chip cookies
and Jeffrey has baked q peanut butter cookies. They want to
package their cookies separately so that each bag has the same
number of cookies. How many cookies could they put in each
bag?
Which of the following methods could be used to find all the
solutions to this problem?
A. Find the divisors of p + q.
B. Find the common factors of p and q.
C. Find the prime factors of p • q.
D. Find the common multiples of p and q.

Back 52

B. Find the common factors of p and q.

Front 53

What value does the 2 represent in the number 2.1 × 10–3?
A. 2/10,000
B. 2/1000
C. 2/100
D. 2/10

Back 53

B. 2/1000

Front 54

In a town with a population of 4800 people, 8% of the population is
evenly distributed in grades 1–6. Approximately how many students
are in grade 4?
A. 55
B. 64
C. 77
D. 96

Back 54

B: 64

Front 55

Use the numbers below to answer the question that follows.
212
206
246
238
231
216
224
To estimate the sum of the numbers given above, Riley first rounds
each number to the nearest ten and then adds the rounded values. By
how much will Riley's estimate differ from the actual sum?
A. 3
B. 7
C. 33
D. 73

Back 55

B. 7

Front 56

Which of the following illustrates the operation 1 1/2
÷ 1/4
?
A. Sean has 1 1/2
pounds of popcorn. He wants to divide it equally
into 4 bags. How many pounds should he put into each bag?
B. A trip to the beach is usually a 1 1/2
-hour drive. Repairs to the
freeway have increased the travel time by 1/4
. How long will the
trip take?
C. Maria has 1 1/2
yards of rope. She wants to divide it into 1/4
-yard
lengths. How many pieces of rope will she have?
D. The perimeter of a rectangular field is 1 1/2
miles. The field is 1/4
mile wide. How long is the field?

Back 56

C. Maria has 1 1/2
yards of rope. She wants to divide it into 1/4
-yard
lengths. How many pieces of rope will she have?

Front 57

Pat is baking a cake. The recipe calls for of 2 1/4
cups of flour per 1/2
pound of butter. If Pat uses 3 cups of flour, how much butter should
be used to keep the proportion of ingredients equal?
A. 1/6
pound
B. 1/4
pound
C. 3/8
pound
D. 2/3
pound

Back 57

D. 2/3
pound

Front 58

Grapefruits in a supermarket display are stacked in the shape of a
pyramid. Each layer of the stack is square. The bottom layer is a
square with 5 grapefruits on each side. The side of each successive
layer is made shorter by one grapefruit. What is the total number of
grapefruits that can be stacked?
A. 15
B. 35
C. 54
D. 55

Back 58

d 55

Front 59

A repair person charges a $30 fixed charge plus $45 per hour for
time spent working. What is the total bill for a job that requires
n hours of work?
A. ($30 + $45)n
B. $15n + $30
C. $30n + $45
D. $45n + $30

Back 59

D. $45n + $30

Front 60

Use the equation below to answer the question that follows.
3n + 2(n – 4) = n + 15
Which of the following equations could occur as a step in solving the
equation above for n?
A. 4n = 19
B. 4n = 7
C. 4n = 23
D. 6n = 7

Back 60

C. 4n = 23

Front 61

Triangle ABC is isosceles. Angle B has a measure of 120°. What is
the measure of angle A?
A. 30°
B. 45°
C. 60°
D. 120°

Back 61

A. 30°

Front 62

The scale on a map is 1 inch = 15 miles. On the same map, the
distance between Belmont and Smithville is 13 inches. Which of the
following is the best estimate of how long it will take to drive from
Belmont to Smithville at an average speed of 60 miles per hour?
A. 2 hours 8 minutes
B. 2 hours 14 minutes
C. 3 hours 15 minutes
D. 4 hours 0 minutes

Back 62

C. 3 hours 15 minutes

Front 63

In some countries, area is measured in pings. If the area of a
rectangular piece of land that measures 22 feet × 27 feet is 33 pings,
how many square feet is equal to one ping?
A. 6
B. 18
C. 26.9
D. 40.5

Back 63

B. 18

Front 64

The range of hourly wages for 15 employees of a small company
starts at $7.50 and ends at $21.40. If only one worker receives the
median wage of $8.90, how many workers receive a higher hourly
wage?
A. 5
B. 6
C. 7
D. 8

Back 64

C. 7

Front 65

Simplify the following expression?
6+2(x+4)

Back 65

2x-2

Front 66

If six cans of beans cose $1.50 what is the cost of eight cans of beans?

Back 66

$2.00

Front 67

Bonnies average score on three tests is 71. Her final two test scores are 64 and 87. What was her score on her final test.

Back 67

62

Front 68

A jar contains 20 balls. These balls are labeled 1 through 20. What is the probablilty that a ball chosen from the jar has a number on it that is divisible by 4?

Back 68

1/4

Front 69

Linda bought a jacket on sale at a 20% discount. If she played $54 for the jacket, what was the original price of the jacket.

Back 69

$72

Front 70

In the number 72104.58, what is the place value of the 2?

Back 70

thousands

Front 71

Mrs. Wall has $300,000. She wishes to give each of her six children an equal amout of money. What is the equation that would represent this problem.

Back 71

300,000/6

Front 72

Bob wants to bake some cupcakes. His recipe uses 2 2/3 cups of flour to produce 36 cupcakes. How many cups of flour should Bob use to bake 12 cupcakes?

Back 72

8/9

Front 73

Rickey drove from town A to town B in 3 hours. His return trip from town B to town A took 5 hours because he drove 15 miles per hour slower on the return trip. How fast did Ricky drive on the trip from town A to town B?

Back 73

37.5 MPH

Front 74

In a barn there were lambs and people. If we counted 30 heads and 104 legs in the barn, how many lambs and how many people.

Back 74

22 lambs and 8 people.