ATI TEAS TEST _Questions & Answers
4 Parts:
1. Science (66 minutes) 54 questions: Basic Science Questions
1. What causes the motion of the tectonic plates and the Earth’s surface?
The Convection currents in the Earth’s Mantle Layer
2. What is the explanation for the fact that the same side of the moon
always faces the Earth? The moon completes one full central-
axis rotation in the same amount of time that it completes one
full orbit of the Earth.
3. On the surface of the Earth, an object will experience a force of
gravity that? Is directly proportional to the object’s mass.
4. What is the difference between alternating current (AC) and
direct current (DC) in an electrical circuit?
The direction that electrons flow through a circuit reverses
at a fixed rate of electron flow direction per unit time for
alternating current.
The direction that electrons flow through a circuit remains
constant for direct current.
5. If two different species are members of the same order, what two
items must they then also be members of? Class and Division: the
hierarchy for organisms is:
Genus, Family, Order, Class, Phylum/Division, Kingdom and
Domain.
6. If sample substance consists of entirely of only one element, what
must all of the individual atoms of the same substance have?
The same atomic number.
, 7. In SI units, what is one joule (J) equivalent to?
1 newton (N) times 1 meter (m)
8. What is the general structure of a typical eukaryotic cell membrane?
A bilayer of phospholipid molecules
9. What is the pH range that includes the pH of a 5x10-3 M aqueous
solution of hydrochloric acid (HCI)? Answer: 3.0 to 2.0
The pH of a solution is equal to the negative log of hydrogen
ion concentration of the solution.
HCI is a strong acid that completely dissociates in an
aqueous solution, forming one hydrogen ion (H+) and one
chloride ion (Cl-) per HCI molecule.
A 5 x 10-3 M solution of hydrochloric acid will therefore produce a solution that
has a 5 x 10-3 M of hydrogen ion concentration. 5 x 10-3 M is between 1 x 10-3 M,
which has the pH of 3, and 1 x 10-2 M, which is equal to a pH of 2. I believe the
answer has to equal to 5.
10.A young boy is swinging a 0.5-kg ball tethered to a 0.5-meter-long
rope around him in a circular path in the horizontal plane (parallel to
the ground). At any given instant in time, the ball has a tangential
velocity with an unchanging scalar magnitude of 20 meters per
second (m-s-1). Ignoring any other forces acting on the ball, such as
gravity, wind resistance or friction, what is the force acting on the
ball through the rope during the time that the ball is undergoing this
type of motion?
The equation for the force required to maintain an object in
unchanging circular motion is: Fc = (0.5 kg)(20 m-s-1)2/ (0.5m) = 400
N
(Weight of ball) x (speed)2 / (length of string)
,11.What are the two physiological responses that will occur due to
activation of the sympathetic nervous system? Pupil dilation
and bronchial dilation
The sympatric nervous system is the (fight or flight) response of the
autonomic nervous system.
The parasympathetic nervous system is the (rest and digest)
division of the autonomic nervous system.
Sympathetic physiological effects include Pupil dilation – which
enhances visual acuity, bronchial dilation – which increases the
efficiency and maximum rate of air exchange of the respiratory
system and suppression of digestion – which allows blood flow and
energy consumption to be redirected from digestive activities to
physiological activities required during fight or flight situations.
12.What would be the likely long-term effect of the rapid reversal
(over approximately 100 to 1000 years) of the Earth’s magnetic fields?
Continued normal evolution of the present ecosystem.
13.What is the energy generated by the sun a result of? Fusion of
hydrogen atoms.
14.An object with a mass m1 is resting on a flat horizontal frictionless
surface. Ignoring the effects of air resistance, what will be the
acceleration experienced by the object when a force of 15 N is
15 N/m1
applied to the object in a horizontal direction? Answer:
15.A simple circuit consists of a single light bulb that is connected to a
single 5-volt (V) battery. If the electrical resistance of the light
bulb is 0.25 ohms (Ω), what is the current in amperes (A) in this
electric circuit?
, Ohm’s law states that, in an electric circuit, the voltage of the circuit is equal to
the current of the circuit and the total resistance of the circuit or V = (I)(R). This
gives I = (5V) / (0.25Ωff); I = 20 V/Ω); w
16.If a child has a physical trait that is determined by a single gene and
that physical trait is not present in the child’s biological mother or
biological father, then which of the following is true? The trait’s
gene likely has two alleles, one that is recessive and one that is
dominant.
17.How many cubic centimeters are equivalent to the volume of a cubic
meter? The volume of a cube is equal to the length times the
height times the width of the cube. One meter is 100 centimeters.
Therefore the length, width and height of a 1-meter cube is 100
centimeter per side or 100 x 100 x 100 = 1,000,000
18.At the of its stellar lifecycle, which of the following will the sun be?
White dwarf
19. What is a way that a light wave differs from a sound wave?
A sound wave’s maximum velocity is less than a light wave’s maximum
velocity.
20. An optical instrument that causes incident light rays traveling
parallel to its focal axis to converge at a focal point in front of the
optical surface could be which of the following?
A simple concave mirror
21. A ray of light is traveling through a substance that has an index
of refraction of 2. The ray then passes through a horizontal interface
between the substance with a refractive index of 2 and into a substance
that has a refractive index of 3. The light ray enters the substance at an
angle less than 90 degrees with respect to the interface. Imagine a
perpendicular line (straight line) is a drawn through the horizontal
4 Parts:
1. Science (66 minutes) 54 questions: Basic Science Questions
1. What causes the motion of the tectonic plates and the Earth’s surface?
The Convection currents in the Earth’s Mantle Layer
2. What is the explanation for the fact that the same side of the moon
always faces the Earth? The moon completes one full central-
axis rotation in the same amount of time that it completes one
full orbit of the Earth.
3. On the surface of the Earth, an object will experience a force of
gravity that? Is directly proportional to the object’s mass.
4. What is the difference between alternating current (AC) and
direct current (DC) in an electrical circuit?
The direction that electrons flow through a circuit reverses
at a fixed rate of electron flow direction per unit time for
alternating current.
The direction that electrons flow through a circuit remains
constant for direct current.
5. If two different species are members of the same order, what two
items must they then also be members of? Class and Division: the
hierarchy for organisms is:
Genus, Family, Order, Class, Phylum/Division, Kingdom and
Domain.
6. If sample substance consists of entirely of only one element, what
must all of the individual atoms of the same substance have?
The same atomic number.
, 7. In SI units, what is one joule (J) equivalent to?
1 newton (N) times 1 meter (m)
8. What is the general structure of a typical eukaryotic cell membrane?
A bilayer of phospholipid molecules
9. What is the pH range that includes the pH of a 5x10-3 M aqueous
solution of hydrochloric acid (HCI)? Answer: 3.0 to 2.0
The pH of a solution is equal to the negative log of hydrogen
ion concentration of the solution.
HCI is a strong acid that completely dissociates in an
aqueous solution, forming one hydrogen ion (H+) and one
chloride ion (Cl-) per HCI molecule.
A 5 x 10-3 M solution of hydrochloric acid will therefore produce a solution that
has a 5 x 10-3 M of hydrogen ion concentration. 5 x 10-3 M is between 1 x 10-3 M,
which has the pH of 3, and 1 x 10-2 M, which is equal to a pH of 2. I believe the
answer has to equal to 5.
10.A young boy is swinging a 0.5-kg ball tethered to a 0.5-meter-long
rope around him in a circular path in the horizontal plane (parallel to
the ground). At any given instant in time, the ball has a tangential
velocity with an unchanging scalar magnitude of 20 meters per
second (m-s-1). Ignoring any other forces acting on the ball, such as
gravity, wind resistance or friction, what is the force acting on the
ball through the rope during the time that the ball is undergoing this
type of motion?
The equation for the force required to maintain an object in
unchanging circular motion is: Fc = (0.5 kg)(20 m-s-1)2/ (0.5m) = 400
N
(Weight of ball) x (speed)2 / (length of string)
,11.What are the two physiological responses that will occur due to
activation of the sympathetic nervous system? Pupil dilation
and bronchial dilation
The sympatric nervous system is the (fight or flight) response of the
autonomic nervous system.
The parasympathetic nervous system is the (rest and digest)
division of the autonomic nervous system.
Sympathetic physiological effects include Pupil dilation – which
enhances visual acuity, bronchial dilation – which increases the
efficiency and maximum rate of air exchange of the respiratory
system and suppression of digestion – which allows blood flow and
energy consumption to be redirected from digestive activities to
physiological activities required during fight or flight situations.
12.What would be the likely long-term effect of the rapid reversal
(over approximately 100 to 1000 years) of the Earth’s magnetic fields?
Continued normal evolution of the present ecosystem.
13.What is the energy generated by the sun a result of? Fusion of
hydrogen atoms.
14.An object with a mass m1 is resting on a flat horizontal frictionless
surface. Ignoring the effects of air resistance, what will be the
acceleration experienced by the object when a force of 15 N is
15 N/m1
applied to the object in a horizontal direction? Answer:
15.A simple circuit consists of a single light bulb that is connected to a
single 5-volt (V) battery. If the electrical resistance of the light
bulb is 0.25 ohms (Ω), what is the current in amperes (A) in this
electric circuit?
, Ohm’s law states that, in an electric circuit, the voltage of the circuit is equal to
the current of the circuit and the total resistance of the circuit or V = (I)(R). This
gives I = (5V) / (0.25Ωff); I = 20 V/Ω); w
16.If a child has a physical trait that is determined by a single gene and
that physical trait is not present in the child’s biological mother or
biological father, then which of the following is true? The trait’s
gene likely has two alleles, one that is recessive and one that is
dominant.
17.How many cubic centimeters are equivalent to the volume of a cubic
meter? The volume of a cube is equal to the length times the
height times the width of the cube. One meter is 100 centimeters.
Therefore the length, width and height of a 1-meter cube is 100
centimeter per side or 100 x 100 x 100 = 1,000,000
18.At the of its stellar lifecycle, which of the following will the sun be?
White dwarf
19. What is a way that a light wave differs from a sound wave?
A sound wave’s maximum velocity is less than a light wave’s maximum
velocity.
20. An optical instrument that causes incident light rays traveling
parallel to its focal axis to converge at a focal point in front of the
optical surface could be which of the following?
A simple concave mirror
21. A ray of light is traveling through a substance that has an index
of refraction of 2. The ray then passes through a horizontal interface
between the substance with a refractive index of 2 and into a substance
that has a refractive index of 3. The light ray enters the substance at an
angle less than 90 degrees with respect to the interface. Imagine a
perpendicular line (straight line) is a drawn through the horizontal
