Praxis Science 5005 Exam with
Accurate Solutions
Which of the following is a chemical change?
A.Burning wood
B.Melting butter
C.Breaking glass
D.Tearing paper - ANSWER-A.Burning wood
The magnitude of which of the following can be measured using the Richter scale?
A.Tornadoes
B.Hurricanes
C.Tsunamis
D.Earthquakes - ANSWER-D.Earthquakes
Which of the following characteristics is (are) unique to mammals?
A.A bony endoskeleton
B.Milk-producing glands
C.A vertebral column
D.Circulating blood cells - ANSWER-B.Milk-producing glands
A maritime air mass is an air mass that forms over
A.an equatorial desert
B.tall mountains
C.a large body of water
D.the South Pole - ANSWER-C.a large body of water
Option (C) is correct. Maritime air masses are air masses that form over large bodies of
water, such as seas and oceans.
Which TWO of the following objects are strongly attracted to magnets?
A.Rubber band
B.Iron nail
C.Steel safety pin
D.Plastic paper clip - ANSWER-B.Iron nail
C.Steel safety pin
Which of the following is generally thought to be a contributing factor to obesity?
A.A sedentary lifestyle
B.Restricting fat in the diet
C.A sensible diet
,D.Regular exercise - ANSWER-A.A sedentary lifestyle
After a person completes an experiment and collects the data in a scientific
investigation, which of the following is the next logical step?
A.Forming a hypothesis
B.Analyzing the results
C.Writing a paper
D.Deciding on a variable - ANSWER-B.Analyzing the results
In which of the following organ systems are the brain and spinal cord found?
A.Skeletal
B.Muscular
C.Nervous
D.Endocrine - ANSWER-C.Nervous
Which of the following scientists is best known for research with electricity?
A.Louis Pasteur
B.Thomas Edison
C.Marie Curie
D.Gregor Mendel - ANSWER-B.Thomas Edison
Which of the following organ systems is responsible for the transport of blood and
nutrients?
A.Circulatory
B.Respiratory
C.Digestive
D.Nervous - ANSWER-A.Circulatory
The circulatory system is responsible for the transport of blood and nutrients.
A device that converts electrical energy directly into mechanical energy is best
described as which of the following?
A.A resistor
B.A prism
C.A motor
D.A battery - ANSWER-C.A motor
Which THREE of the following actions will result in reduced energy consumption?
A.Commuting to work using public transportation instead of driving alone in a gasoline-
powered car
B.Setting the thermostat for a home cooling system to a higher temperature in warm
weather
C.Leaving the engine of a gasoline-powered car running when the car will be parked for
more than five minutes
,D.Preventing electrical appliances from drawing power in standby mode by unplugging
them when they are not in use - ANSWER-A.Commuting to work using public
transportation instead of driving alone in a gasoline-powered car
B.Setting the thermostat for a home cooling system to a higher temperature in warm
weather
D.Preventing electrical appliances from drawing power in standby mode by unplugging
them when they are not in use
Four different containers holding the same amount of water are left undisturbed and
open to the atmosphere on the same laboratory bench. From which container will the
water most likely evaporate at the fastest rate? - ANSWER-Compared with the water in
the other containers, the water in the beaker has the largest surface area that is
exposed to the atmosphere, which will result in the fastest rate of evaporation.
Which of the following hormones is most directly involved in the regulation of blood
glucose levels?
A.Testosterone
B.Estrogen
C.Insulin
D.Progesterone - ANSWER-C.Insulin
Which of the following is an example of a mixture?
A.Compound
B.Solution
C.Molecule
D.Element - ANSWER-B.Solution
Which of the following holds stars together in the form of a galaxy?
A.Magnetism
B.Electricity
C.Gravity
D.Radiation - ANSWER-C.Gravity
A 5 kg bowling ball and a 0.5 kg basketball are dropped from the same height. In the
absence of air resistance, which of the following is true?
A.The basketball will hit the ground first.
B.The bowling ball will hit the ground first.
C.Both balls will hit the ground at the same time.
D.Earth exerts an equal gravitational force on both balls. - ANSWER-C.Both balls will hit
the ground at the same time.
In the absence of air resistance, all objects near Earth's surface will accelerate toward
Earth at the same rate.
Which of the following best explains why the Moon has a greater effect than the Sun on
the tides of Earth's oceans?
, A.The Moon is larger than the Sun.
B.The Moon has a greater mass than the Sun.
C.The Moon has phases as viewed from Earth.
D.The Moon is much closer to Earth than is the Sun. - ANSWER-D.The Moon is much
closer to Earth than is
Because the Moon is much closer to Earth than the Sun is, the tide-generating force
between the Moon and Earth is greater than that between the Sun and Earth. As a
result, the Moon has a greater influence on the tides of Earth's oceans than the Sun
does.
One Earth year is the length of time it takes for
A.the Moon to make one revolution around Earth
B.Earth to rotate once on its axis
C.Earth to make one revolution around the Sun
D.Earth to make one revolution around the center of the Milky Way galaxy - ANSWER-
C.Earth to make one revolution around the Sun
The most rapid rates of evolution are typically observed for populations of which of the
following?
A.Bacteria
B.Trees
C.Rodents
D.Insects - ANSWER-A.Bacteria
Which of the following represents the amount of space an object takes up?
A.Mass
B.Weight
C.Density
D.Volume - ANSWER-D.Volume
Of the following processes, which is most directly responsible for the formation of
clouds?
A.Precipitation
B.Surface runoff
C.Condensation
D.Transpiration - ANSWER-C.Condensation
Condensation is the change of water vapor to liquid water. Clouds are formed by the
condensation of water vapor in the air.
Which of the following is a major advantage of sexual reproduction over asexual
reproduction?
A.Increasing the social interaction among organisms that might otherwise live apart
B.Increasing the number of genes in the offspring produced
C.Increasing the size of a population at a more rapid rate
Accurate Solutions
Which of the following is a chemical change?
A.Burning wood
B.Melting butter
C.Breaking glass
D.Tearing paper - ANSWER-A.Burning wood
The magnitude of which of the following can be measured using the Richter scale?
A.Tornadoes
B.Hurricanes
C.Tsunamis
D.Earthquakes - ANSWER-D.Earthquakes
Which of the following characteristics is (are) unique to mammals?
A.A bony endoskeleton
B.Milk-producing glands
C.A vertebral column
D.Circulating blood cells - ANSWER-B.Milk-producing glands
A maritime air mass is an air mass that forms over
A.an equatorial desert
B.tall mountains
C.a large body of water
D.the South Pole - ANSWER-C.a large body of water
Option (C) is correct. Maritime air masses are air masses that form over large bodies of
water, such as seas and oceans.
Which TWO of the following objects are strongly attracted to magnets?
A.Rubber band
B.Iron nail
C.Steel safety pin
D.Plastic paper clip - ANSWER-B.Iron nail
C.Steel safety pin
Which of the following is generally thought to be a contributing factor to obesity?
A.A sedentary lifestyle
B.Restricting fat in the diet
C.A sensible diet
,D.Regular exercise - ANSWER-A.A sedentary lifestyle
After a person completes an experiment and collects the data in a scientific
investigation, which of the following is the next logical step?
A.Forming a hypothesis
B.Analyzing the results
C.Writing a paper
D.Deciding on a variable - ANSWER-B.Analyzing the results
In which of the following organ systems are the brain and spinal cord found?
A.Skeletal
B.Muscular
C.Nervous
D.Endocrine - ANSWER-C.Nervous
Which of the following scientists is best known for research with electricity?
A.Louis Pasteur
B.Thomas Edison
C.Marie Curie
D.Gregor Mendel - ANSWER-B.Thomas Edison
Which of the following organ systems is responsible for the transport of blood and
nutrients?
A.Circulatory
B.Respiratory
C.Digestive
D.Nervous - ANSWER-A.Circulatory
The circulatory system is responsible for the transport of blood and nutrients.
A device that converts electrical energy directly into mechanical energy is best
described as which of the following?
A.A resistor
B.A prism
C.A motor
D.A battery - ANSWER-C.A motor
Which THREE of the following actions will result in reduced energy consumption?
A.Commuting to work using public transportation instead of driving alone in a gasoline-
powered car
B.Setting the thermostat for a home cooling system to a higher temperature in warm
weather
C.Leaving the engine of a gasoline-powered car running when the car will be parked for
more than five minutes
,D.Preventing electrical appliances from drawing power in standby mode by unplugging
them when they are not in use - ANSWER-A.Commuting to work using public
transportation instead of driving alone in a gasoline-powered car
B.Setting the thermostat for a home cooling system to a higher temperature in warm
weather
D.Preventing electrical appliances from drawing power in standby mode by unplugging
them when they are not in use
Four different containers holding the same amount of water are left undisturbed and
open to the atmosphere on the same laboratory bench. From which container will the
water most likely evaporate at the fastest rate? - ANSWER-Compared with the water in
the other containers, the water in the beaker has the largest surface area that is
exposed to the atmosphere, which will result in the fastest rate of evaporation.
Which of the following hormones is most directly involved in the regulation of blood
glucose levels?
A.Testosterone
B.Estrogen
C.Insulin
D.Progesterone - ANSWER-C.Insulin
Which of the following is an example of a mixture?
A.Compound
B.Solution
C.Molecule
D.Element - ANSWER-B.Solution
Which of the following holds stars together in the form of a galaxy?
A.Magnetism
B.Electricity
C.Gravity
D.Radiation - ANSWER-C.Gravity
A 5 kg bowling ball and a 0.5 kg basketball are dropped from the same height. In the
absence of air resistance, which of the following is true?
A.The basketball will hit the ground first.
B.The bowling ball will hit the ground first.
C.Both balls will hit the ground at the same time.
D.Earth exerts an equal gravitational force on both balls. - ANSWER-C.Both balls will hit
the ground at the same time.
In the absence of air resistance, all objects near Earth's surface will accelerate toward
Earth at the same rate.
Which of the following best explains why the Moon has a greater effect than the Sun on
the tides of Earth's oceans?
, A.The Moon is larger than the Sun.
B.The Moon has a greater mass than the Sun.
C.The Moon has phases as viewed from Earth.
D.The Moon is much closer to Earth than is the Sun. - ANSWER-D.The Moon is much
closer to Earth than is
Because the Moon is much closer to Earth than the Sun is, the tide-generating force
between the Moon and Earth is greater than that between the Sun and Earth. As a
result, the Moon has a greater influence on the tides of Earth's oceans than the Sun
does.
One Earth year is the length of time it takes for
A.the Moon to make one revolution around Earth
B.Earth to rotate once on its axis
C.Earth to make one revolution around the Sun
D.Earth to make one revolution around the center of the Milky Way galaxy - ANSWER-
C.Earth to make one revolution around the Sun
The most rapid rates of evolution are typically observed for populations of which of the
following?
A.Bacteria
B.Trees
C.Rodents
D.Insects - ANSWER-A.Bacteria
Which of the following represents the amount of space an object takes up?
A.Mass
B.Weight
C.Density
D.Volume - ANSWER-D.Volume
Of the following processes, which is most directly responsible for the formation of
clouds?
A.Precipitation
B.Surface runoff
C.Condensation
D.Transpiration - ANSWER-C.Condensation
Condensation is the change of water vapor to liquid water. Clouds are formed by the
condensation of water vapor in the air.
Which of the following is a major advantage of sexual reproduction over asexual
reproduction?
A.Increasing the social interaction among organisms that might otherwise live apart
B.Increasing the number of genes in the offspring produced
C.Increasing the size of a population at a more rapid rate
