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.