Physics Chapter 1-8 Tests
true
1 x 106 mm is the same as 1 km.
false A 100% error would indicate a very inaccurate measurement.
A 100% error would indicate a very accurate measurement.
true
A 60.0 kg object on earth would have the same mass on the moon.
tangent
A line that intersects a curve at a single point without crossing the curve is called a(n) ____________ line.
10−6 V
A microvolt is equal to - 103 V. - 10−6 V. - 10−3 V. - 106 V.
false A negative acceleration can be an increase of velocity in the negative direction.
A negative acceleration is always associated with a decrease in velocity.
false It is possible for an instrument to be precise but not accurate.
A precise instrument will always be accurate.
paradigm
According to philosopher Thomas Kuhn, normal science is controlled by the reigning - hypothesis. - paradigm. - theory. - law.
an observation
An entomologist measures the intensity of the fluorescence of the wings of different species of butterflies by using a spectrophotometer. This is an example of - a hypothesis. - an observation. - deductive reasoning. - induction.
true
An object that is slowing in the positive direction would be experiencing deceleration.
Creation Mandate is the original idea/job God has given to us; to care for the earth and its resources.
Briefly explain the Creation Mandate. (2 points)
historical
Determining the age of rocks is just one kind of ____________________ science.
a reference point
Displacement must always be measured from - the y-axis. - a reference point. - infinity. - the current position of an object.
false God never condones the reckless and wasteful exploitation of nature.
Exercising dominion over the earth's resources means using them any way we want, since we are God's highest creation.
Mandate
God created Adam on the sixth day of Creation and gave him the command to fill and use the earth. This command is known as the Creation ______________.
true
Good scientific hypotheses are testable by observation.
2
How many significant digits are in the least precise quantity in the equation 9.0 mL + 150 mL? - 1 - 2 - 3 - 4
1
Identify how many significant digits are present for the value (put N/A for not applicable if the numbers are considered to be exact). 0.0004 cm
4
Identify how many significant digits are present for the value (put N/A for not applicable if the numbers are considered to be exact). 0.002 050 A
3
Identify how many significant digits are present for the value (put N/A for not applicable if the numbers are considered to be exact). 1.00 10−3 N
4
Identify how many significant digits are present for the value (put N/A for not applicable if the numbers are considered to be exact). 10.01 s−1
4
Identify how many significant digits are present for the value (put N/A for not applicable if the numbers are considered to be exact). 2000. kg
N/A
Identify how many significant digits are present for the value (put N/A for not applicable if the numbers are considered to be exact). 5
4
Identify how many significant digits are present for the value (put N/A for not applicable if the numbers are considered to be exact). 6.022 x 1023 atoms
N/A
Identify how many significant digits are present for the value (put N/A for not applicable if the numbers are considered to be exact). 100 cm/1 m
distance / length
If an object travels in a straight line, the magnitude of its displacement will be equal to the ____________ traveled.
acceleration
If an object's position or its velocity is constant, then its _____________________ is zero.
accurate, but not precise.
If given three observed values of 5.75 g, 3 g, and 5.46 g with an accepted value of 3.1 g, the observed value of 3 g is - precise, but not accurate. - accurate, but not precise. - accurate and precise. - not accurate and not precise.
precise, but not accurate.
If given three observed values of 9.64 kg, 9.63 kg, and 9.65 kg with an accepted value of 6.35 kg, the observed value of 9.64 kg is - precise, but not accurate. - accurate, but not precise. - accurate and precise. - not accurate and not precise.
true
It is possible for two scientists with different worldviews to observe the same data and arrive inductively at vastly different conclusions.
false Through physics we can see God's marvelous handiwork. Therefore, physics is a tool that people can use to declare the glory of God.
Knowledge of physics does not help a believer become more effective in witnessing for Christ.
true
Mass is different from weight.
computed by change in position divided by change in time between the two positions.
On a position-time graph, the average velocity between two points is - computed by change in position divided by change in time between the two positions. - computed by change in time divided by change in position between the two positions. - the horizontal displacement on the graph between the two positions. - the vertical displacement on the graph between the two positions.
true
Science is a process of continual change.
false Scripture does deal with reality. It presents us with an origin for the universe, a history of the earth, and reasons for studying science.
Scripture does not deal with reality, but rather it deals exclusively with the supernatural.
measured
Significant digits apply only to ________________ data.
phenomenon
Something that is perceptible to the senses or to instruments is called a(n) _________________.
true
Speed is always positive.
false The SI is the standard metric system used by scientists worldwide.
The SI system of measurement is used exclusively in the United States.
false The SI unit for luminous intensity is the candela (cd).
The SI unit for luminous intensity is the ampere (A).
second
The SI unit for time is the _____________.
error
The difference between your answer and the correct answer is called - error. - precision. - significant digits. - accuracy.
system acceleration is constant.
The equations of linear motion apply only if - the total motion of a system is in one dimension within its reference frame. - system acceleration is either increasing or decreasing. - system velocity is constant. - system acceleration is constant.
estimated
The last significant digit in a measurement is called the _________________ digit.
false The distance (length) a system moves along its path often differs from the change in position (displacement).
The length a system moves along its path is the same as its displacement.
centimeter
The length of a book should be most appropriately measured in - meters. - centimeters. - micrometers. - nanometers.
true
The magnitude of a vector quantity is always positive.
the distance that light travels in a vacuum.
The meter is now defined as - a small fraction of the distance from the north pole to the equator. - the length of a metal bar in the International Bureau of Weights and Measures. - the distance that light travels in a vacuum. - the average distance from a man's elbow to the tip of his middle finger.
workability
The most important feature of a scientific model is its _________________.
based upon Genesis 1:28.
The most important reason to do physics is - based upon Genesis 1:28. - to improve mass communications technology. - to develop better weapons in the War on Terror. - based upon Matthew 6:33.
velocity
The slope of a two-dimensional position-time graph gives - displacement. - distance. - velocity. - acceleration.
false For a falling object, speed would be positive, and velocity would be negative
The speed and the velocity of a falling object will always be the same.
instantaneous speed
The speedometer on your car measures - average speed. - average velocity. - instantaneous speed. - instantaneous velocity.
classical
The study of mechanics would be included in the branch of ________________ physics.
false
The sum of the angles in any triangle is equal to 360°.
true
The two worldviews discussed in this chapter are the Christian worldview and the secular worldview.
false The unit symbol for a dimension is not always the same as the variable symbol.
The unit symbol for a dimension is usually the same as the variable symbol.
matter
The universe consists of three principal dimensions: space, time, and ______________.
publish his work in a peer-reviewed professional journal.
To be credited as the originator for a particular finding, a physicist must - publish his work in a peer-reviewed professional journal. - present his findings at a meeting from his research notes. - be the first to create a website to discuss his findings. - be a peer reviewer of original research.
true
Two vectors that are added together to produce a resultant are called the components of the resultant.
false When the directions of the vectors are not identical, the resultant is not equal to the sum of the magnitudes of the two legs.
Vector addition is the same as scalar addition.
true
Vector reference angles are always positive acute angles.
false Vector addition is commutative.
Vector subtraction is commutative.
true
Vectors can be subtracted from other vectors.
vector
Velocity is a ________ quantity because it has both magnitude and direction.
kilogram
What is the SI unit for mass? - kilogram - gram - pound - mole
true
When a vector is multiplied by a scalar, the direction of the vector remains the same unless the scalar is a negative number.
false When adding vectors graphically, it is necessary to draw both of them using the same scale.
When adding vectors graphically, it is not necessary to draw both of them using the same scale.
a change in only the time interval in which direction and velocity are measured
Which change results in zero acceleration of a system? - change in only the direction of velocity - a change in only the magnitude of velocity - a change in both the magnitude and direction of velocity - a change in only the time interval in which direction and velocity are measured
ft2/s2
Which is a possible unit for acceleration? - ft2/s2 - m2/s - m/s - ft/s2
090T
Which is another way to write 0°? - 090T - 000T - 45° north of west - 425° - North
1 cm/100 m
Which is the appropriate conversion factor to convert 14.4 cm to m? - 1 m/100 cm - 100 m/1 cm - 1 cm/100 m - 100 cm/1 m
displacement
Which of the following dimensions belongs in the set {force, velocity, acceleration, magnetic field}? - speed - displacement - temperature - mass
speed
Which of the following is a scalar quantity? - displacement - velocity - force - speed
(bold) F
Which of the following is a vector? - mass - F - (bold) F - temperature
qualitative data
Which of the following is the least objective? - qualitative data - quantitative data - computed data - scientific laws
270T
Which of the following map directions is equivalent to the Cartesian 180°? - 000T - 090T - 270T - 360T
60 s/min
Which of the following numbers are considered exact? - 0.005 m - 34 °C - 56.4 ft - 60 s/min
explaining why human life is precious
Which of the following studies is outside the realm of science? - discovering the compounds in a jellyfish that allow it to bioluminesce - the search for a subterranean ocean on Jupiter's moon Europa - the search for a cure for the Ebola virus - explaining why human life is precious
meter
Which of the following units is a fundamental SI unit? - meter - newton - liter - volt
It does not contradict well-established observational data and principles.
Which of the properties of a good hypothesis could be used to critique the following statement? "Astronauts are weightless in space because there is an absence of gravitational pull from the earth." - It is simple. - It is a variation of an established theory. - It does not contradict well-established observational data and principles. - It provides an explanation for all current observations and predicts new ones.
They are not testable.
Why are theories for the origin of the solar system not good hypotheses? - They are not simple. - They are not testable. - They contradict well-established observational data and principles. - They do not provide an explanation for all current observations and predict new ones.
velocity-time graph
a graph that may be used to evaluate both displacement and accelerations during selected time intervals
dimension
a measurable physical quantity such as mass, length, or time
time
a nonphysical continuum that orders the sequence of events
vector
a quantity that requires two pieces of information in order to be completely described
significant digits
all "certain" digits plus one estimated digit
zero
an object's position is constant, then its velocity is ___________.
velocity
change of position during an interval of time
acceleration
change of velocity during an interval of time
free fall
falling under the influence of only gravity
precision
how close measurements of the same quantity are to each other
unit analysis
problem-solving method involving unit cancellation
radian
the SI unit of angle measure
mole
the SI unit used to measure the amount of a substance
dynamics
the branch of the study of motion that describes the causes of motion
displacement
the distance and direction between an object's position at one time and its position at a later time
position-time graph
the slope of this type of graph is velocity
mechanics
the study of motion
true
vectors can be multiplied by scalars.