PRAXIS: Elementary Education: Three
Subject Bundle—Science (5905)
The process by which a gas becomes a liquid is called - *answers *Condensation
Which of the following human organs is responsible for the formation of sperm cells? -
*answers *Testis
Which of the following best describes the approximate length of time it takes Earth to
rotate once about its axis? - *answers *One day.
On average, it takes 24 hours, or one day, for Earth to rotate once about its axis. The
rotation of Earth about its axis leads to the cycle of day and night.
Which of the following processes most directly involves the movement of water from the
atmosphere to Earth's surface? - *answers *Precipitation
Precipitation is the process by which atmospheric water falls to Earth's surface in the
form of rain, hail, sleet, or snow. Because atmospheric water returns to Earth's surface
primarily through the process of precipitation, it is an important part of the water cycle.
Infiltration is the process by which water on Earth's surface enters the subsurface soil
and rock. Transpiration is the process by which water evaporates from plant leaves and
enters the atmosphere. Sublimation is the process by which a substance transitions
directly from the solid phase to the gas phase without going through the liquid phase.
Which of the following is an important function of the digestive system? - *answers
*Absorbing nutrients into the body.
The digestive system includes organs that break down food into small molecules, which
are then absorbed into the body. The primary location of absorption is the small
intestine.
As a rock begins tumbling down a hillside, most of its gravitational potential energy is
converted into - *answers *Kinetic Energy
What is kinetic energy? - *answers *Kinetic energy is the energy of motion. As the rock
begins moving down the hillside under the influence of gravity, most of the rock's
gravitational potential energy is converted into kinetic energy
What is thermal energy? - *answers *Heat energy
Which of the following is the best example of an interaction between different biotic
factors in an ecosystem?
A caterpillar undergoing metamorphosis
A plant absorbing sunlight
A grazing animal eating plants
, PRAXIS: Elementary Education: Three
Subject Bundle—Science (5905)
An icicle melting on a warm day - *answers *A grazing animal eating plants
A grazing animal eating plants is an example of an interaction between two different
biotic factors (an animal and the plants it eats) in an ecosystem. The metamorphosis of
a caterpillar into a butterfly is an example of a type of insect life cycle. A plant absorbing
sunlight is an example of an interaction between a biotic factor (a plant) and an abiotic
factor (sunlight). An icicle melting on a warm day is an example of an interaction
between two abiotic factors (water and temperature)
What is biotic factors in an ecosystem - *answers *
What is an ecosystem? - *answers *
A neutral atom becomes a positive ion when it loses one or more:
electrons
neutrons
protons
nuclei - *answers *Electrons
Protons are positively charged, and electrons are negatively charged. A neutral atom
has the same number of protons and electrons. A neutral atom becomes a positive ion
when it loses one or more electrons, resulting in the ion having more positive charges
than negative charges.
Which of the following best describes a galaxy?
A small celestial body composed of ice
A giant planet orbited by ten or more moons
A collection of planets revolving around a star
A large cluster of stars, dust, and gas - *answers *A galaxy is a system composed of
many stars, dust, and gas, which is held together by gravitational attraction.
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?
The object will stop moving.
The object will continue moving in the same direction but will slow down.
The object will continue moving in the same direction but will speed up.
The object will move in the opposite direction but at the same speed as before. -
*answers *The object will continue moving in the same direction but will speed up
When a constant force is applied to the object in the same direction in which the object
is moving, the object will accelerate in that direction
Subject Bundle—Science (5905)
The process by which a gas becomes a liquid is called - *answers *Condensation
Which of the following human organs is responsible for the formation of sperm cells? -
*answers *Testis
Which of the following best describes the approximate length of time it takes Earth to
rotate once about its axis? - *answers *One day.
On average, it takes 24 hours, or one day, for Earth to rotate once about its axis. The
rotation of Earth about its axis leads to the cycle of day and night.
Which of the following processes most directly involves the movement of water from the
atmosphere to Earth's surface? - *answers *Precipitation
Precipitation is the process by which atmospheric water falls to Earth's surface in the
form of rain, hail, sleet, or snow. Because atmospheric water returns to Earth's surface
primarily through the process of precipitation, it is an important part of the water cycle.
Infiltration is the process by which water on Earth's surface enters the subsurface soil
and rock. Transpiration is the process by which water evaporates from plant leaves and
enters the atmosphere. Sublimation is the process by which a substance transitions
directly from the solid phase to the gas phase without going through the liquid phase.
Which of the following is an important function of the digestive system? - *answers
*Absorbing nutrients into the body.
The digestive system includes organs that break down food into small molecules, which
are then absorbed into the body. The primary location of absorption is the small
intestine.
As a rock begins tumbling down a hillside, most of its gravitational potential energy is
converted into - *answers *Kinetic Energy
What is kinetic energy? - *answers *Kinetic energy is the energy of motion. As the rock
begins moving down the hillside under the influence of gravity, most of the rock's
gravitational potential energy is converted into kinetic energy
What is thermal energy? - *answers *Heat energy
Which of the following is the best example of an interaction between different biotic
factors in an ecosystem?
A caterpillar undergoing metamorphosis
A plant absorbing sunlight
A grazing animal eating plants
, PRAXIS: Elementary Education: Three
Subject Bundle—Science (5905)
An icicle melting on a warm day - *answers *A grazing animal eating plants
A grazing animal eating plants is an example of an interaction between two different
biotic factors (an animal and the plants it eats) in an ecosystem. The metamorphosis of
a caterpillar into a butterfly is an example of a type of insect life cycle. A plant absorbing
sunlight is an example of an interaction between a biotic factor (a plant) and an abiotic
factor (sunlight). An icicle melting on a warm day is an example of an interaction
between two abiotic factors (water and temperature)
What is biotic factors in an ecosystem - *answers *
What is an ecosystem? - *answers *
A neutral atom becomes a positive ion when it loses one or more:
electrons
neutrons
protons
nuclei - *answers *Electrons
Protons are positively charged, and electrons are negatively charged. A neutral atom
has the same number of protons and electrons. A neutral atom becomes a positive ion
when it loses one or more electrons, resulting in the ion having more positive charges
than negative charges.
Which of the following best describes a galaxy?
A small celestial body composed of ice
A giant planet orbited by ten or more moons
A collection of planets revolving around a star
A large cluster of stars, dust, and gas - *answers *A galaxy is a system composed of
many stars, dust, and gas, which is held together by gravitational attraction.
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?
The object will stop moving.
The object will continue moving in the same direction but will slow down.
The object will continue moving in the same direction but will speed up.
The object will move in the opposite direction but at the same speed as before. -
*answers *The object will continue moving in the same direction but will speed up
When a constant force is applied to the object in the same direction in which the object
is moving, the object will accelerate in that direction
