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WorksheetsPS Final Study Guide
Total questions: 73
Worksheet time: 56mins
A (a) is an educated guess based on observations.
A scientific (a) is what happens in nature and seems to always be true; these can be represented by mathematical equations.
A scientific (a) is an explanation of an event based on repeated observations and experiments.
Which of the following are examples of a model?
mathematical equation
solar system mobile
a poster that shows the timeline of the big bang theory & evolution
a graph that tracks rain events by month
A (a) is a visual representation of an idea or object that is too big, small, complex, or dangerous and helps us to understand it.
A number that only provides information about the size or magnitude.
scalar
vector
A number that provides information about both the magnitude and direction of an object.
scalar
vector
Which of the following measures are vector quantities?
speed
distance
velocity
displacement
acceleration
Which of the following measures are scalar quantities?
speed
distance
velocity
displacement
acceleration
A measurement obtained by combining different SI units is called a ___.
derived unit
developed unit
diffraction
depleted unit
The valid digits, in a measurement, based on a tool's precision are the (a) .
Which represents how well a measurement agrees with the "real" or expected value.
accuracy
precision
Which represents the degree of exactness or the reliability of a number given your ability to reproduce the number/measure.
accuracy
precision
y=mx+b represents what?
equation of a line
quadratic equation
Pythagorean theorem
derivative
In the equation y=mx+b, what does "m" represent? Check all that apply.
slope
rise/run
change in "y" variable/change in "x" variable
y-intercept
(a) is the application of scientific knowledge to benefit society.
Which of the following apply to the dependent variable of an experiment? Mark all that apply.
responding variable
y-axis
the variable the scientist is measuring
the variable the scientist manipulates
x-axis
Which of the following apply to the independent variable of an experiment? Mark all that apply.
responding variable
x-axis
the variable the scientist is measuring
the variable the scientist manipulates
y-axis
Motion can be described as a change in (a)
What is needed to know motion has occurred?
reference point
speed
distance
direction
In the equation p=mv, "p" represents what?
pulse
momentum
displacement
power
What do you know about momentum? Mark all that apply.
quality of all objects
is directly related to mass only
is directly related to mass and velocity
quality of all moving objects
The change in the rate of velocity is known as ....?
acceleration
power
momentum
speed
Which of the below apply to velocity? Check all that apply.
vector quantity
scalar quantity
speed is a component
direction is a component
considers displacement not distance
Which of the below apply to speed? Check all that apply.
vector quantity
scalar quantity
direction is considered
calculated by distance divided by time
function of displacement
The total of all lengths an object moves from a reference point.
distance
displacement
dispersion
The difference between where an object starts and where it ends its motion.
distance
displacement
dispersion
What do you know about inertia? Mark all that apply.
quality of all objects
is directly related to mass only
is directly related to mass and velocity
quality of all moving objects
An object's resistance to a change in its motion is known as (a) .
What do you know about a Newton? Check all that apply.
derived unit
made up by the units kg m/s^2
is symbolized by "N"
can be calculated by multiplying mass times acceleration.
can be a measure of an object's weight
Mass and weight are the same things.
True
False
Energy can not be created or destroyed, only transferred between objects.
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
Law of Conservation of Momentum
Law of Conservation of Energy
The total energy in a system is constantly changing.
True
False
An object at rest will stay at rest and an object in motion will continue with the motion unless an unbalanced force acts on the object.
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
Law of Conservation of Momentum
Law of Conservation of Energy
Acceleration of an object is directly related to the force applied and inversely related to the mass of an object.
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
Law of Conservation of Momentum
Law of Conservation of Energy
When two objects interact there are equal and opposite forces at work between the objects.
Newton's 1st Law of Motion
Newton's 2nd Law of Motion
Newton's 3rd Law of Motion
Law of Conservation of Momentum
Law of Conservation of Energy
Forces occur in pairs.
True
False
A measure of the amount of "stuff" in an object.
mass
weight
The effect of gravity on a mass and has the unit of 'N'.
mass
weight
When forces are (a) there is no change to an object's motion.
When forces are (a) the object experiences acceleration.
What are the ways an object can accelerate? Mark all that apply.
increase speed
decrease speed
change direction
What is Acceleration Due to Gravity and how does the gravitational force affect an object's mass?
9.8 m/s^2; gives us weight
9.8 m/s; gives us weight
.98 m/s^2; gives us weight
.98 m/s; gives us weight
How does 'gravity work' and what are the variables that determine the amount of gravity in a particular place?
the attractive force between two objects
the attractive and repulsive force between two objects
mass of the objects and distance between them
distance between the objects
mass of objects
What does it mean, and what are the characteristics of, an object in free-fall. Check all that apply.
constant rate of acceleration
-9.8 m/s^2
air resistance increases with velocity
air resistance is ignored
What do you know about 'work'? Check all that apply.
it is equal to a force applied over a distance
the unit is a joule (J)
the unit is a watt (w)
'work' and 'energy' have the same units
What does the unit watt (W) apply to - (a) , which is known as the rate at which energy is converted from one form to another?
What are the ways that machines make work easier? Check all that apply.
multiplying the force or speed of force of applied
change the direction of applied force
increase the distance over which the force is applied
Thermal energy moves from areas of high energy (hot) to areas of low energy (cold).
True
False
A machine that employs only one "action". Check all that apply.
simple machine
compound machine
screw & pulley
wheel/axle & inclined plane
wedge & level
What do 'like' charges/poles do?
attract
repel
What do 'unlike' charges/poles do?
attract
repel
Most objects are electrically neutral because they have equal numbers of what?
protons
neutrons
electrons
atoms
An object that has an excess of electrons would have what net charge?
positive
negative
neutral
An object that has a deficit of electrons would have what net charge?
positive
negative
neutral
The relationship between voltage, current, and amperage in a circuit is expressed by which law?
Ohm's Law
Coulomb's Law
Law of Conservation of Charge
Kirchoff's Rule
Used to turn electrical energy into mechanical energy.
motor
generator
battery
capacitor
Used to turn mechanical energy into electrical energy.
motor
generator
battery
capacitor
Used to turn chemical energy into electrical energy.
motor
generator
battery
capacitor
When current switches direction in a regular pattern and is the result of electromagnetic induction.
direct current
alternating current
series circuit
parallel circuit
When current flows in only one direction and is often provided either through an adapter or battery.
direct current
alternating current
series circuit
parallel circuit
When current has more than one pathway to flow through.
direct current
alternating current
series circuit
parallel circuit
When current only has one pathway to flow through.
direct current
alternating current
series circuit
parallel circuit
Is a measure of the current or flow of electrons past a point.
resistance
amperes
voltage
Is a measure of the "push" force that causes charges to flow.
resistance
amperes
voltage
Is a measure of the resistance of a component to the flow of electrons and is used to produce useful output in electrical devices.
resistance
amperes
voltage
What is it called when the atoms of a molecule become aligned and thus make the atoms act like a tiny magnet.
(a)
What is it called when electricity is generated by the use of a solenoid placed in a magnetic field?
(a)
When electrons are stationary and/or accumulate on an object resulting in a discharge. Lightening is an example.
(a)
What is the key advantage of a parallel circuit over a series circuit?
all components get the total voltage
all components get the total current
all components get a reduction in resistance
How can you increase the strength of a solenoid/electromagnet? Check all that apply.
increase the current
increase the number of wraps
decrease the voltage
increase the resistance
decrease the number of wraps
What is a wire wrapped in a coil and often found with an iron core placed in the center called?
(a)
What is a solenoid with current and an iron core called?
(a)
