PRAXIS 5005 SCIENCE - Forms 1, 2, &
3 Exam Questions and Answers
The process by which a gas becomes a liquid is called
A. condensation
B. freezing
C. melting
D. reduction - ANSWER-Condensation
Which of the following human organs is responsible for the formation of sperm cells?
A.Pancreas
B.Thyroid
C.Ovary
D.Testis - ANSWER-Testis
Which of the following best describes the approximate length of time it takes Earth to
rotate once about its axis?
A.One hour
B.One day
C.One month
D.One year - ANSWER-One Day
Which THREE of the following are generally acceptable rules for laboratory activities?
A.Students should wash their hands after mixing chemicals in the laboratory.
B.Students should inform the teacher immediately of any accidents or spills in the
laboratory.
C.Students should use cracked glassware only when the teacher is in the laboratory.
D.Students should read instructions thoroughly before performing laboratory
procedures. - ANSWER-1. Students should wash their hands after mixing chemicals in
the laboratory.
2. Students should inform the teacher immediately of any accidents or spills in the
laboratory.
3. Students should read instructions thoroughly before performing laboratory
procedures.
Which of the following processes most directly involves the movement of water from the
atmosphere to Earth's surface?
,A.Infiltration
B.Precipitation
C.Transpiration
D.Sublimation - ANSWER-Precipitation
Which of the following is an important function of the digestive system?
A.Absorbing nutrients into the body
B.Transporting signals to and from different parts of the body
C.Providing structural support for the body
D.Protecting the body from ultraviolet radiation - ANSWER-Absorbing nutrients into the
body
As a rock begins tumbling down a hillside, most of its gravitational potential energy is
converted into
A.kinetic energy
B.thermal energy
C.chemical energy
D.nuclear energy - ANSWER-kinetic energy
Which of the following is the best example of an interaction between different biotic
factors in an ecosystem?
A.A caterpillar undergoing metamorphosis
B.A plant absorbing sunlight
C.A grazing animal eating plants
D.An icicle melting on a warm day - ANSWER-A grazing animal eating plants
A neutral atom becomes a positive ion when it loses one or more
A.electrons
B.neutrons
C.protons
D.nuclei - ANSWER-electrons
Which of the following best describes a galaxy?
A.A small celestial body composed of ice
B.A giant planet orbited by ten or more moons
C.A collection of planets revolving around a star
D.A large cluster of stars, dust, and gas - ANSWER-A large cluster of stars, dust, and
gas
, An object is moving in a straight line at a constant speed. What will happen if a constant
force is then applied to the object in the same direction in which the object is moving?
A.The object will stop moving.
B.The object will continue moving in the same direction but will slow down.
C.The object will continue moving in the same direction but will speed up.
D.The object will move in the opposite direction but at the same speed as before. -
ANSWER-The object will continue moving in the same direction but will speed up.
Which of the following molecules is a product of cellular respiration and is used for
energy transfer in cells?
A.ATP
B.Carbon dioxide
C.Oxygen
D.Water - ANSWER-ATP
Researchers found fossils of marine organisms in rock layers that are located high
above sea level. Which of the following conclusions is best supported by the
researchers' observations?
A.The fossils were transported to the research site by wind currents.
B.The rock layer in which the fossils were found is igneous rock.
C.The organisms from which the fossils were formed lived less than a hundred years
ago.
D.The area containing the rock layers was previously covered by water. - ANSWER-The
area containing the rock layers was previously covered by water.
During a total solar eclipse, the Moon is in which of the following phases?
A.New Moon
B.First-quarter Moon
C.Full Moon
D.Third-quarter Moon - ANSWER-New Moon
Which of the following is a primary function of plant roots?
A.Transporting seeds away from a plant
B.Anchoring the plant body to the ground
C.Transferring pollen between flowers
D.Absorbing sunlight for photosynthesis - ANSWER-Anchoring the plant body to the
ground
Which of the following best describes the type of chemical reaction that occurs when the
acid HCl is mixed with the base NaOH in a solution?
3 Exam Questions and Answers
The process by which a gas becomes a liquid is called
A. condensation
B. freezing
C. melting
D. reduction - ANSWER-Condensation
Which of the following human organs is responsible for the formation of sperm cells?
A.Pancreas
B.Thyroid
C.Ovary
D.Testis - ANSWER-Testis
Which of the following best describes the approximate length of time it takes Earth to
rotate once about its axis?
A.One hour
B.One day
C.One month
D.One year - ANSWER-One Day
Which THREE of the following are generally acceptable rules for laboratory activities?
A.Students should wash their hands after mixing chemicals in the laboratory.
B.Students should inform the teacher immediately of any accidents or spills in the
laboratory.
C.Students should use cracked glassware only when the teacher is in the laboratory.
D.Students should read instructions thoroughly before performing laboratory
procedures. - ANSWER-1. Students should wash their hands after mixing chemicals in
the laboratory.
2. Students should inform the teacher immediately of any accidents or spills in the
laboratory.
3. Students should read instructions thoroughly before performing laboratory
procedures.
Which of the following processes most directly involves the movement of water from the
atmosphere to Earth's surface?
,A.Infiltration
B.Precipitation
C.Transpiration
D.Sublimation - ANSWER-Precipitation
Which of the following is an important function of the digestive system?
A.Absorbing nutrients into the body
B.Transporting signals to and from different parts of the body
C.Providing structural support for the body
D.Protecting the body from ultraviolet radiation - ANSWER-Absorbing nutrients into the
body
As a rock begins tumbling down a hillside, most of its gravitational potential energy is
converted into
A.kinetic energy
B.thermal energy
C.chemical energy
D.nuclear energy - ANSWER-kinetic energy
Which of the following is the best example of an interaction between different biotic
factors in an ecosystem?
A.A caterpillar undergoing metamorphosis
B.A plant absorbing sunlight
C.A grazing animal eating plants
D.An icicle melting on a warm day - ANSWER-A grazing animal eating plants
A neutral atom becomes a positive ion when it loses one or more
A.electrons
B.neutrons
C.protons
D.nuclei - ANSWER-electrons
Which of the following best describes a galaxy?
A.A small celestial body composed of ice
B.A giant planet orbited by ten or more moons
C.A collection of planets revolving around a star
D.A large cluster of stars, dust, and gas - ANSWER-A large cluster of stars, dust, and
gas
, An object is moving in a straight line at a constant speed. What will happen if a constant
force is then applied to the object in the same direction in which the object is moving?
A.The object will stop moving.
B.The object will continue moving in the same direction but will slow down.
C.The object will continue moving in the same direction but will speed up.
D.The object will move in the opposite direction but at the same speed as before. -
ANSWER-The object will continue moving in the same direction but will speed up.
Which of the following molecules is a product of cellular respiration and is used for
energy transfer in cells?
A.ATP
B.Carbon dioxide
C.Oxygen
D.Water - ANSWER-ATP
Researchers found fossils of marine organisms in rock layers that are located high
above sea level. Which of the following conclusions is best supported by the
researchers' observations?
A.The fossils were transported to the research site by wind currents.
B.The rock layer in which the fossils were found is igneous rock.
C.The organisms from which the fossils were formed lived less than a hundred years
ago.
D.The area containing the rock layers was previously covered by water. - ANSWER-The
area containing the rock layers was previously covered by water.
During a total solar eclipse, the Moon is in which of the following phases?
A.New Moon
B.First-quarter Moon
C.Full Moon
D.Third-quarter Moon - ANSWER-New Moon
Which of the following is a primary function of plant roots?
A.Transporting seeds away from a plant
B.Anchoring the plant body to the ground
C.Transferring pollen between flowers
D.Absorbing sunlight for photosynthesis - ANSWER-Anchoring the plant body to the
ground
Which of the following best describes the type of chemical reaction that occurs when the
acid HCl is mixed with the base NaOH in a solution?
