Essential Physics Practice Exam
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Take this quiz to help you prepare for your final. You will want a calculator and your equation list from your review handy. I will not see the results of your quiz unless you print out or email me the completion certificate. Do this if you want some bonus points! (email: rachael. [email protected] Org)
- 1.All Energy adheres to the Law of Conervation of Energy. Why is a light bulb not 100% efficient?
- A.
New light bulbs are 100% efficient
- B.
All energy transfers lose energy in the form of heat
- C.
Tungsten wire in light bulbs are weak
- D.
Of all energy transfers, light bulbs are least efficient
- 2.What is the potential energy of a 80 kg tourist at the top of a building that is 400 m high?
- A.
9.8 J
- B.
320000 J
- C.
32000 J
- D.
313600 J
- 3.Energy produced by the sun is
- A.
Nuclear
- B.
Chemical
- C.
Electrical
- D.
Mechanical
- 4.If the velocity of an object is 1m/s, then increases to 2 m/s, what will happen to the kinetic energy of the object?
- A.
It is reduced by 2
- B.
It stays the same
- C.
It will double
- D.
It will be multiplied by 4
- 5.Energy is measured in
- A.
Newtons
- B.
Amps
- C.
Joules
- D.
Kilograms
- 6.Ultraviolet light is an example of
- A.
Heat energy
- B.
Electromagnetic energy
- C.
Potential energy
- D.
Electrical energy
- 7.A magic turtle has a mass of 47kg and can run 31 m/s. What is his kinetic energy?
- A.
22583.5 J
- B.
68479 J
- C.
1739 J
- D.
34239.5 J
- 8.Pedaling a bike is an example of
- A.
Potential energy
- B.
Thermal energy
- C.
Mechanical energy
- D.
Heat energy
- 9.When you drag your book across a table, friction will convert
- A.
Kinetic energy to potential energy
- B.
Kinetic energy to thermal energy
- C.
Potential energy to wavelengths
- D.
Potential energy to kinetic energy
- 10.
![In the energy transfer diagram of a battery and a light bulb,]( "In the energy transfer diagram of a battery and a light bulb,")
In the energy transfer diagram of a battery and a light bulb,- A.
Heat energy is transferred to chemical energy
- B.
Chemical energy is transferred to mechanical energy
- C.
Electrical energy is transferred to mechanical energy
- D.
Electrical energy is transferred to light (electromagnetic) energy
- 11.
![Point A represents matter at a solid. What phase change is happening at point B?]( "Point A represents matter at a solid. What phase change is happening at point B?")
Point A represents matter at a solid. What phase change is happening at point B?- A.
Freezing
- B.
Melting
- C.
Sublimation
- D.
Vaporization
- 12.
![Point C represents the melting point of a substance. What would Point E represent?]( "Point C represents the melting point of a substance. What would Point E represent?")
Point C represents the melting point of a substance. What would Point E represent?- A.
Freezing
- B.
Melting
- C.
Sublimation
- D.
Vaporization
- 13.Which one of the following is a conductor?
- A.
Straw
- B.
Metal
- C.
Wool
- D.
Wool
- 14.A charged balloon can pick up small bits of paper, proving that its ____ force is stronger than Earth's gravitational force.
- A.
Voltage
- B.
Magnetic field
- C.
Electrical force
- D.
Current
- 15.The phase of matter with a definite chape and volume is
- A.
Plasma
- B.
Liquid
- C.
Gas
- D.
Solid
- 16.The phase with the most energetic molecules is
- A.
Solid
- B.
Liquid
- C.
Gas
- D.
Absolute zero
- 17.When submimation occurs,
- A.
Solid is converted to gas
- B.
Solid is converted to liquid
- C.
Gas is converted to liquid
- D.
Water melts
- 18.
![Ohms () is the unit of measurement for]( "Ohms () is the unit of measurement for")
Ohms () is the unit of measurement for- A.
Current
- B.
Resistance
- C.
Voltage
- D.
Temperature
- 19.Like charges
- A.
Attract
- B.
Repel
- C.
Balance one another
- 20.
![Which temperature scale does water have a boiling point of 100 and a freezing point of 0]( "Which temperature scale does water have a boiling point of 100 and a freezing point of 0")
Which temperature scale does water have a boiling point of 100 and a freezing point of 0- A.
Fahrenheit
- B.
Celsius
- C.
Kelvin
- D.
Rankine
- 21.Tension breaker: Pizza is
- A.
Delicious
- B.
Just ok
- C.
Gross
- D.
For sissies
- 22.The way in which energy travels the length of a metal is
- A.
Radiation
- B.
Convection
- C.
Conduction
- D.
Conviction
- 23.The temperature in which particles would not be moving
- A.
32 degrees F
- B.
-273 Kelvin
- C.
0 degrees Celsius
- D.
Absolute Zero
- 24.When using the equation I=V/R, what happens to the current when resistance is doubled?
- A.
The current decreases
- B.
The current increases
- C.
The current stays the same
- D.
The current alternates
- 25.Current is measured using
- A.
Coulombs
- B.
Amps
- C.
Ohms
- D.
Volts
- 26.As bulbs are added to a ___ circuit, they shine less brightly
- A.
Closed
- B.
Open
- C.
Parallel
- D.
Series
- 27.
![The circuit shown below is]( "The circuit shown below is")
The circuit shown below is- A.
An open circuit
- B.
A series circuit
- C.
A parallel circuit
- D.
Both series and parallel circuits
- 28.What voltage produces a current of 300 amps with a resistance of 20 Ohms?
- A.
6000 volts
- B.
600 volts
- C.
15 volts
- D.
0.15 volts
- 29.A 9 volt battery produces a current of 45 amperes. What is the resistance?
- A.
405 ohms
- B.
5 ohms
- C.
0.2 ohms
- D.
There is no resistance
- 30.What is an example of a transverse wave?
- A.
Hand wave
- B.
Sound wave
- C.
Ocean wave
- D.
Electromagnetic wave
- 31.The distance a wave travels in a certain amount of time is the ___
- A.
Wavelength
- B.
Speed
- C.
Frequency
- D.
Amplitude
- 32.
![In this diagram, wavelength is labeled __]( "In this diagram, wavelength is labeled __")
In this diagram, wavelength is labeled __- A.
A
- B.
B
- C.
C
- D.
D
- 33.
![In this diagram, amplitude is lableled __]( "In this diagram, amplitude is lableled __")
In this diagram, amplitude is lableled __- A.
A
- B.
B
- C.
C
- D.
D
- 34.Sound waves with frequencies above the normal human range of hearing are
- A.
Infrasound
- B.
Untrasound
- C.
Decibels
- D.
Resonance
- 35.Bats use ____ to locate food and navigate
- A.
Acoustics
- B.
Resonance
- C.
Echolocation
- D.
Infrared
- 36.Wavelength is measured in
- A.
Meters
- B.
Hertz
- C.
Decibels
- D.
Meters per second
- 37.Frequency is measured in
- A.
Meters
- B.
Hertz
- C.
Decibels
- D.
Meters per second
- 38.A wave has a wavelength of 3 m and a frequency of 6Hz. What is the speed of the wave?
- A.
2 m/s
- B.
9 m/s
- C.
18 m/s
- D.
0.5 m/s
- 39.The speed of a wave is 20m/s and the frequency is 100Hz. What is the wavelength?
- A.
0.2m
- B.
5m
- C.
2000m
- D.
2m
- 40.Why do you hear thunder after you see lightning?
- A.
Light and sound travel at the same speeds
- B.
Sound is faster than light
- C.
Light is faster than sound
- D.
Sound is faster in certain temperatures
- 41.____ waves can transfer energy without a medium
- A.
Sound
- B.
Electromagnetic
- C.
Longitudinal
- D.
Surface
- 42.Its harder to hear at the back of the auditorium because
- A.
The intensity of the wave decreases as distance from the source increases
- B.
The frequency of the wave decreases as distance from the source increases
- C.
The intensity of the wave increases as distance from the source increases
- D.
The frequency of the wave increases as distance from the source increases
- 43.The loudness of a sound depends upon the wave's
- A.
Frequency
- B.
Amplitude
- C.
Pitch
- D.
Speed
- 44.Sound is a ___ wave
- A.
Surface
- B.
Transverse
- C.
Longitudinal
- D.
Electromagnetic
- 45.All electro magnetic waves have the same ___
- A.
Speed
- B.
Wavelength
- C.
Frequency
- D.
Amplitude
- 46.____ waves would cause a sunburn
- A.
Gamma
- B.
Radio
- C.
UV
- D.
X-ray
- 47.____ waves have the shortest wavelengths
- A.
Gamma
- B.
Radio
- C.
UV
- D.
X-ray
- 48.A police using a radar gun is using ___ waves
- A.
Gamma
- B.
Radio
- C.
UV
- D.
X-ray
- 49.Electromagnetic waves with the longest wavelengths have
- A.
The highest energy
- B.
The lowest frequency
- C.
The most damaging effects
- D.
The highest frequency
- 50.When light hits and bounces off a bumpy, uneven surface diffuse ____ occurs
- A.
Refraction
- B.
Absorption
- C.
Refection
- D.
Disbursement
- 51.When light passes from air to water,
- A.
It speeds up
- B.
It slows down
- C.
It continues at the same speed
- D.
It stops completely
- 52.When white light strikes a black object,
- A.
No light is reflected
- B.
All light is reflected
- C.
Some light is reflected
- D.
Light passes through the object
- 53.Opaque objects reflect some wavelengths of light a ___ the rest
- A.
Refract
- B.
Absorb
- C.
Diffuse
- 54.
- A.
A real image because its inverted
- B.
A real image because its upright
- C.
A virtual image because its inverted
- D.
A virtual image because its upright
- 55.Clear glass is ____ while frosted glass is ___
- A.
Opaque, transparent
- B.
Translucent, opaque
- C.
Translucent, transparent
- D.
Transparent, translucent
- 56.The sunset appears red beceause
- A.
All UV light is absorbed except red
- B.
The other colors of light have longer wavelengths and get scattered first
- C.
The other colors of light have shorter wavelengths and get scattered first
- D.
All UV light is red
- 57.As two objects move apart, what happens to the force of gravity between them?
- A.
It increases
- B.
It decreases
- C.
It stays the same
- 58.Your weight is different than your mass because
- A.
Mass is the force of gravity acting on your weight
- B.
Weight is the force of gravity acting on your mass
- C.
Weight takes kinetic energy into account
- D.
Weight and mass are always the same
- 59.A car moving at constant velocity has what forces acting upon it? (Check all that apply)
- A.
Friction
- B.
Air resistance
- C.
Gravity
- 60.The push or pull on an object causing it to accelerate is
- A.
Speed
- B.
Density
- C.
Force
- D.
Mass
- 61.The tendency of matter to resist a change in motion is ___
- A.
Gravity
- B.
Inertia
- C.
Friction
- D.
Resistance
- 62.An 10000 N hippo is free falling and deploys a parachute that provides 6000 N of air resistance. What is the net force acting on the hippo?
- A.
4000 N down
- B.
4000 N up
- C.
16000 N down
- D.
16000 N up
- 63.Your computer exerts a downward force on the desk and the desk exerts an
- A.
Unequal force in the opposite direction
- B.
Unequal force in the same direction
- C.
Equal force in the same direction
- D.
Equal force in the opposite direction
- 64.The average speed of a car that travels 150 km in 3 hours is
- A.
10 km/h
- B.
25 km/h
- C.
50 km/h
- D.
100 km/h
- 65.
![How much net force is needed to accelerate a 5000kg truck at 4 m/?]( "How much net force is needed to accelerate a 5000kg truck at 4 m/?")
How much net force is needed to accelerate a 5000kg truck at 4 m/?- A.
2000N
- B.
4000N
- C.
20000N
- D.
1250N
- 66.
![A race horse goes from 5 m/s to 15 m/s in 2 seconds. What was its acceleration?
( NOTE: All answers are in m/....It takes forever to get this program to do superscripts!!)]( "A race horse goes from 5 m/s to 15 m/s in 2 seconds. What was its acceleration?
( NOTE: All answers are in m/....It takes forever to get this program to do superscripts!!)")
A race horse goes from 5 m/s to 15 m/s in 2 seconds. What was its acceleration? ( NOTE: All answers are in m/....It takes forever to get this program to do superscripts!!)- A.
5
- B.
10
- C.
15
- D.
2
- 67.
![What is the speed of the car plotted on this graph?]( "What is the speed of the car plotted on this graph?")
What is the speed of the car plotted on this graph?- A.
5 m/s
- B.
10 m/s
- C.
20 m/s
- D.
50 m/s
- 68.
![Between A and B the car]( "Between A and B the car")
Between A and B the car- A.
Slowed down
- B.
Sped up
- C.
Had no acceleration
- D.
Stopped
- 69.
![Between which interval was the greatest negative acceleration?]( "Between which interval was the greatest negative acceleration?")
Between which interval was the greatest negative acceleration?- A.
AB
- B.
BC
- C.
CD
- D.
DE
- 70.
![How many meters did the car travel between A and B?]( "How many meters did the car travel between A and B?")
How many meters did the car travel between A and B?- A.
0m
- B.
10m
- C.
50m
- D.
100m
- 71.
- A.
Constant acceleration and constant speed
- B.
Changing acceleration and constant speed
- C.
Changing acceleration and changing speed
- D.
Constant acceleration and changing speed
- 72.
- A.
Rotation
- B.
Revolution
- C.
Circular motion
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