WorksheetsPhysics Final Study
Total questions: 145
Worksheet time: 11hrs 15mins
A 70 kg runner has a velocity of 5 m/s. Her kinetic energy is
875 J
175 J
1750 J
350 J
You drop a 5 kg ball from a height of 2 m. Just before it reaches the ground, what type of energy does it have?
Potential Energy
Kinetic Energy
Nuclear Energy
Chemical Energy
Bro A bench presses 145-lbs five times in 20 seconds. Bro B bench presses 145-lbs five times in 10 seconds. Which of the following is true?
Bro
Bro A has more power
Bro B has more power
Both Bros have the same power
Bro C was ignored his whole childhood, so he must have the most power.
If 150 Joules of work is needed to move a box 10 meters, what force was used?
1500 N
15 N
1.5 N
150 N
A 10 kg object with gravitational potential energy of 800 J is released and allowed to fall to the ground. What is its velocity just before it hits the ground ?
63.4 m/s
81.6 m/s
9.8 m/s
12.6 m/s
a)Between which letters is a wavelength?
b)Between which letters is the amplitude?
a) B and F
b)F and G
a)C and D
b)A and B
a)B and F
b)C and D
a)A and E
b)F and G
Which of the following statements is true regarding the speed of sound?
The speed of sound is a constant that never changes
The speed of sound increases in cold weather
The speed of sound decreases in hot weather
Speed of sound helps determine the frequency of of a pitch due to the Doppler Effect
A wave has a velocity= 600 m/s and a wavelength= 2.0m. What is its frequency?
300 Hz
0.0033 Hz
3000 Hz
none of these answers
Which wave has the largest frequency?
A
B
C
They all have equal frequencies
The speed of this sound wave is 2000 m/s, and it has a wavelength of 8 meters?
What is its PERIOD?
250 sec
4.3 sec
none of these answers
0.004 sec
Calculate the gravitational force between two objects when they are 0.750m apart. Each object has a mass of 5.00kg.
2.96x10-9N
3.00x10-6N
2.22x10-9N
2.23x10-8N
What happens to a sound wave when two objects are moving farther apart?
frequency decreases
frequency increases
frequency stays the same
It turns into cheese
If the period of a wave is 0.5 seconds, what is the frequency of that wave?
0.5 Hz
2 Hz
1 Hz
4 Hz
Two objects are gravitationally attracted with a force of 24N. If the mass of one object is doubled and then distance between their centers is doubled, then the new force of attraction is __N
6
12
24
none of these answers
Can energy be created or destroyed?
No
Yes
In what kind of wave does the matter in the medium moves in the same direction (parallel) that the wave travels
Longitudinal wave
Transverse wave
Light wave
Brain wave
Specific heat --
another term for temperature
the flow of charged particles (electrons)
the emission of electrons when electromagnetic radiation (light) falls on an object
determines how much energy is needed to raise the temperature of a material
What's it called when light causes elections to be emitted from an object?
Photoelectric effect
Nuclear fission
Specific heat
Nuclear fusion
What type of nuclear energy happens in the center of the sun?
Fission
Fusion
Which type of nuclear power is currently possible to use on Earth?
Fission
Fusion
What is gravitational force?
attraction or repulsion of charged particles (like protons and electrons)
attraction between two masses
force that holds the nucleus of atoms together
force responsible for nuclear decay
What force is responsible for holding the nucleus of atoms together?
Weak nuclear force
Force of gravity
Strong nuclear force
Electromagnetic force
The flow of electrons is called --
Wavelength
Current
Resistance
Voltage
A resistor is any device that changes ______________ into another form
Potential energy
Kinetic energy
Electrical energy
Thermal energy
The frequency of a wave is the--
number of waves that pass a given point each second
length of one cycle of a wave (from crest to crest)
tendency to continue moving
the height of a wave
What is wavelength?
the number of waves that pass a given point each second
the height of a wave
the flow of charged particles (electrons)
the length of one cycle of a wave (from crest to crest)
When waves change mediums they
reflect
refract
diffract
disapear
an Electromagnet increases in strength when
the current increase
the number of loops increases
the iron core is more conductive
all of the above
if you break a magnet in half you have
2 complete magnets
two half magnets
a north pole, and a south pole
metal with its magnetic properties destroyed
Electrostatics is
the buildup of charges
a force from negative charge
discharge of electricity
what makes lightbulbs light
Work is
always in the direction of motion
energy being used
force multipled by distance
all answers
Machines lose efficiency because of
impulse
heat
fuel
friction
The energy of motion
Kinetic
Electrical
Thermal
Mechanical
If an object is moving at twice its original velocity, its Kinetic energy is now
twice the magnitude
equal in magnitude
half the magnitude
quadruple (four times) the magnitude
In order to equally accelerate an object with double the mass, we would need to apply a force
That has twice the magnitude
that is equal in magnitude
that has half the magnitude
that has quadruple (four times) the magnitude
A space ship turns its engines off while floating in space. The ship will
Slow to a stop
speed up
continue at the same velocity
continue at the same speed but begin to turn
An object that experiences balanced forces is...
not moving
In Free-fall
In equilibrium
not magnetic
Frequency of sound is experienced as
volume
length
intensity
pitch
What type of energy is shown by the movement of a wind turbine's blades?
kinetic
elastic
gravitational
nuclear
What type of energy is stored in fossil fuels, like coal?
chemical
dissipated
kinetic
elastic
A ball rolling down a hill converts _____________ energy into _________ energy.
KE ; PE
PE ; KE
ME ; PE
PE ; PE
This depends upon which planet you are on, where you are?
mass
weight
This stays the same no matter where you are, it does not depend on location.
mass
weight
The 2 things that the force of gravity depend upon are
masses of objects
distance between objects
How close they are to the sun
force of objects due to gravity
The units for the force of gravity are
Newtons
Kilograms
pounds
m/s/s
If these boys are pulling with the same amount of force. What will happen?
The boy in blue will win.
They will not move at all.
The boy in red will win.
Both will fall down.
___________ is an opposing force that makes objects in motion slow down.
force
speed
friction
mass
Which type of lens is thick in the middle, is used to correct farsightedness, and refracts the light causing the image to be pulled in forward to the retina?
convex lens
concave lens
Which type of lens is thin in the middle, is used to correct nearsightedness, and spreads out the light which pushes the image back to the retina?
convex lens
concave lens
The branch of physics that deals with light and vision is called
Prisms
Optics
Wavelength
Flashlights, headlights, and a make-up mirror are all examples of
concave mirrors
convex mirrors
A concave mirror is curved
inward
outward
A convex mirror is curved
inward
outward
Store security mirrors and rear view mirrors are both examples of
concave mirrors
convex mirrors
The law of reflection states that when light rays strike a plane mirror they are
reflected at a smaller angle at which they arrived
reflected at the same angle at which they arrived
reflected at a larger angle at which they arrived
Glass fibers that transmit light and are used in communication are called
electromagnetic spectrum
incandescent light bulbs
fiber optics
Sound travels fastest in (a)
Which of the following is not an example of refraction?
Waves transfer _______.
particles
matter
energy
Examples of this type of waves include water waves, waves on a string/jump rope, and light waves.
transverse
longitudinal
Examples of _____ waves include sound waves and earthquake P-waves.
transverse
longitudinal
The _______ is the highest point on a transverse wave, and the ____ is the lowest point.
Trough, Crest
Crest, Trough
Compression, Rarefaction
Rarefaction, Compression
The _______ is the size or height of a wave, measured from the equilibrium to the crest or trough.
Amplitude
Wavelength
Frequency
The _______ of a wave is how many waves pass a given point every second.
Frequency
Wavelength
Amplitude
In a longitudinal wave, a ____ is an area where the particles are spread apart and a ____ is an area where the particles are close together.
crest, trough
compression, rarefaction
rarefaction, compression
trough, crest
Examples of ________ waves include visible light, xrays, ultraviolet, and radio waves.
transverse
longitudinal
Waves that can travel through empty space are called _____ waves. Waves that require a medium to travel, such as air or water, are called _____ waves.
mechanical, electromagnetic
electromagnetic, mechanical
crest, trough
compressional, rarefactional
In the diagram of a compressional wave, A is showing a ___ while B is showing a ___.
compression, rarefaction
trough, crest
rarefaction, compression
crest, trough
Select all: Work is equal to...
KE + PE
Change in energy
mg
Fd
What is a general definition of wave interference?
When a wave bounces off an object
When more than on wave meet and interact in the same medium
When a wave bends around a corner
When a wave creates static
What type of interference is being shown in the picture?
Constructive
Destructive
What type of interference is occurring in the picture?
Constructive
Destructive
Which of these lists the EM waves from Highest to lowest frequency?
Radio - Micro - Gamma - Visible light - UV - Xrays - Infrared - Xrays
Radio - Micro - Infrared - Visible light - UV - X - Gamma waves
Gamma - Xray - UV - Visible light - Infrared - Micro - radio
none
What type of circuit is the image showing?
Parallel
Series
No circuit
To calculate the frequency of an electromagnetic wave, you need to know the speed of the wave and its
wavelength.
intensity.
refraction.
amplitude.
Light in the form of a particle that has discrete amount of energy is called a
Charm
Photon
Exciton
Muon
In this picture, the iron filings show the shape of the magnetic -
pole
core
field
axis
The student arrived home and turned on a light switch, so she could see how to get to her bedroom. The switch allowed electricity to flow and was transformed into-
Light energy
mechanical energy
superior energy
radiant energy
which of the following materials are best used as insulators?
Wood
Rubber
Metal
Plastic
A penny is an example of
An insulator
an electron
a proton
a conductor
How can it be explained that someone's hair can stick to a balloon?
There is static electricity
There is too much dust in the air
A parallel circuit was too long
The person needs to wash his hair
Which of the following items would conduct electricity?
Aluminum ladder
Metal screwdriver
Wooden baseball bat
Rubber flip flops
The student conducted an experiment with circuits. Why was the bulb bright when he closed the switch?
The switch produced an electric current
Closing the switch broke the circuit
Closing the switch completed the circuit
The switch did not make a difference
What is at the center of every atom?
An electron
A compound
A molecule
A nucleus
To complete the circuit, a wire should be placed from —
(Hint: Think about our sound song.)
Radio waves and _______ are used in communication
Microwaves
Gamma rays
Visible light
Ultraviolet
Regulates the amount of light entering the eye and gives the eye its color.
Iris
Lens
Pupil
Retina
Waves move (a) without moving (b) .
Centripetal force is...
the inward force acting on a body moving at constant speed in a circle
the outwards force acting on a body moving at constant speed in a circle
A ball is moving at constant speed around the circle. Which letter represents the acceleration of the ball?
A
B
C
D
Nonsense. The ball can't be accelerating while moving at a constant speed.
Why do objects experience centripetal acceleration even though they can have a constant speed?
Because they are speeding up as they move in a circle
Because they are constantly changing direction and hence, velocity changes, and that net change is directed inward.
Because they are constantly changing both speed and direction
Because when you have 100 people pedaling, you can speed up more easily.
The linear velocity is always _____ to the line of a circle.
outwards
towards the center
tangent
faster
