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Questions (129)
Why is projected growth an important factor to consider when choosing a career?
(1 point ) Responses It is an estimate, so it
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Chandra has been working at a dry cleaner for about a year. She notices that much of the store’s revenue comes from
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Obesity is the condition of being significantly overweight.(1 point)
Responses True True False False Question 2 The number of
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A student is using a weak computer to design a logo. If the weak computer is the only constraint, should the student use the
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Which forms of electromagnetic radiation are arranged in order of increasing energy?
(1 point) Responses microwaves, ultraviolet,
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Which statement about the effect of temperature on the speed of sound is correct?(1 point)
Responses Changes in temperature have
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The first part shows a man producing a sound with a wavelength of 2.0 m and a frequency of 165 hertz. The speed calculated using
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A sound has a higher pitch than a bell. Which quantity must also be higher in this sound than in the bell?(1 point)
Responses
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Which combination of frequencies would produce the lowest beat frequency?(1 point)
Responses 10 Hz and 15 Hz 10 Hz and 15 Hz 500
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How do electromagnets cause a maglev train to levitate above the track? (1 point)
Responses Magnets in the track and magnets in
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Students build four electromagnets and test them by picking up metal tacks. Here are their partial results.
12 coils 4 tacks 24
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Which scenario shows radiation?(1 point)
Responses The air under a reading lamp is warmed. The air under a reading lamp is
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What is the best description of heat?(1 point)
Responses the measure of the average kinetic energy of the particles in an object
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What happens when thermal energy is applied to water?(1 point)
Responses Its molecules gain kinetic energy. Its molecules gain
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Which of the following factors would decrease the magnetic field strength of an electromagnet?(1 point)
Responses increasing the
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When two charged particles are moving toward each other, their velocities decrease until they eventually come to a stop. What
1 answer
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Where do the forces that make atoms interact come from?(1 point)
Responses from the electric fields of neutral molecules from the
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How much more kinetic energy does a 6-kilogram bowling ball have when it is rolling at 16 mph (7.1 meters per second) than when
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Which student is using innovative problem-solving to investigate potential energy and kinetic energy?(1 point )
Responses Meghan
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Which student is using innovative problem-solving to investigate potential energy and kinetic energy?(1 point)
Responses Meghan
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Which sentence best describes a self-directed learner?(1 point)
Responses She always gets good grades. She always gets good
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Gardeners would need to use 960 Newtons of force to lift a potted tree 45 centimeters onto a deck. Instead, they set up a lever.
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What is the advantage of class 3 lever?(1 point)
Responses It decreases the distance over which force needs to be applied. It
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A gardener uses a wheelbarrow to move 20 kilograms of soil from a compost pile to a flower bed, a distance of 53 meters. The
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Why might someone choose to use film, rather than digital methods, for photography?(2 points )
Responses Some film methods allow
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Why might someone choose to use film, rather than digital methods, for photography?(2 points)
Responses Some film methods allow
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Which of the following best describes why the trees appear green due to the behavior of light?(1 point)
Responses The trees
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What behavior of light is evidenced by the image of the mountain on the smooth surface of the lake?(1 point)
Responses Reflection
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Which statement presents an advantage of using electronic ballots?(1 point)
Responses Results can be quickly and accurately
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Which of these describes digital transmissions and not analog transmissions?(2 points)
Responses 1s and 0s 1s and 0s sine waves
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If a wave transfers from one medium to another medium with different properties, which statement is true?(2 points)
Responses The
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Which phrase correctly defines the amplitude of a wave?(2 points)
Responses the horizontal distance from the trough of one wave
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When the string on a violin vibrates, waves move in both directions along the string, interfering with each other. Sometimes
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A stationary source produces a sound wave at a frequency of 100 Hz. The wave travels at 1125 feet per second. A car is moving
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How do the frequencies and the speeds of yellow light and blue light compare?(2 points)
Responses The frequency of blue light is
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What is one way that light waves differ from sound waves?(2 points)
Responses Light waves do not require a medium to propagate.
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Which statement best describes the refraction of light as it moves from air to glass?(2 points)
Responses Light undergoes
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Suppose that the mirror is moved so that the tree is between the focus point F and the mirror. What happens to the image of the
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Which statement presents an advantage of using digital systems for voting? (1 point)
Responses People may not know how to work
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Which statement presents an advantage and a disadvantage of online banking? (1 point)
Responses Online banking can be done
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Which phrase describes an analog signal and not a digital signal?(1 point)
Responses very little noise very little noise binary
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California sea lions communicate underwater at frequencies ranging from 500 to 4,000 hertz. The speed of sound in sea water is
1 answer
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While traveling in the same medium, sound A has a wavelength of 5 meters, while sound B has a wavelength of 10 meters. Which
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Two similar waves X and Y travel through the same medium. Wave X has a frequency of 200 hertz and a wavelength of 35 meters.
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Humans can hear thunder at different frequencies. These correspond to wavelengths ranging from 2.75 to 16.5 meters. If the speed
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A wave travels at 1,500 m/s with a frequency of 5 hertz. What is its wavelength?(1 point)
Responses 1,495 m 1,495 m 300 m 300 m
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The table shows the speed of ultrasound waves in different tissues in the human body.
The table shows the speed of ultrasound
1 answer
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The table shows the speed of sound in different mediums.
Medium Speed of Sound (m/s) Air 343 Glass 5,640 Steel 5,940 Water 1,433
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Two different types of rope with different properties are fused together to make one long rope. When a wave transfers from the
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The table shows the speed of sound in different mediums.
Medium Speed of Sound (m/s) Air 343 Glass 5,640 Steel 5,940 Water 1,433
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The sound of a plucked guitar string travels through the air and strikes the eardrum of a person in the same room. How does the
1 answer
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An earthquake sends seismic waves outward from the epicenter. The waves travel through different media in different directions.
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Sonar systems used in water send out sound waves that reflect off the environment and then are detected. As water gets denser,
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As a wave travels from one medium to another, its wavelength triples. Which statement describes the speed and frequency in the
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Water waves approaching the shore will slow down. Which statement describes another change that occurs?(1 point)
Responses The
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A student conducts an experiment in which sound waves pass through air and then through water.
Which statement describes the wave
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The table below shows the speed of sound in water at different temperatures and salinities.
The table shows the speed of sound in
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The speed of sound through diamond is about 12,000 m/s. The speed of sound through wood is about 3,300 m/s. Which statement
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In music, the note G above middle C has a frequency of about 392 hertz. If the speed of sound in the air is 340 m/s, what is the
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Two ropes are identical. A wave traveling through the first rope has a frequency of 1.5 hertz and a wavelength of 6 meters. What
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A surfer talks about riding a 20-foot wave. Which measurement of waves is the surfer describing?(1 point)
Responses amplitude
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Question
Which term describes the distance from the crest of a wave to the next crest?(1 point) Responses wavelength wavelength
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The wires in a piano vibrate, but fractions of the wire also vibrate at different frequencies than the whole wire. What is the
1 answer
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How can a person sing into a piano and cause a piano wire to vibrate?(1 point)
Responses The person sings at the same frequency
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In which case will a beat frequency most likely occur?(1 point)
Responses two of the same instrument playing notes at the same
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A person is singing in the shower. They notice that as certain notes become very loud, the shower walls vibrate. Which statement
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When a guitar string is plucked, what part of the standing wave is found at the fixed ends of the string?(1 point)
Responses the
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A person moves away from a stationary sound source. Which phrase describes the sound perceived by the person?(1 point)
Responses
1 answer
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Which of the following is true about sound waves? (1 point)
Responses Sound would move faster in a pool of rubber than in a pool
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What happens to the wavelength when the frequency increases?(1 point)
Responses The wavelength stays the same The wavelength
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What do both sound and light waves transfer?(1 point)
Responses air air matter matter energy energy electricity
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Which type of wave needs a medium to travel?(1 point)
Responses sound waves, because they travel by oscillating molecules sound
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Parallel light waves bounce off a smooth surface. Which behavior of light does this describe?(1 point)
Responses absorption
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Which of the following best describes an electric circuit that powers a load?(1 point)
Responses Electric current flows from an
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V = IR (voltage is equal to amperage multiplied by resistance)
I = V/R (amperage is equal to voltage divided by resistance) R =
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Valeria puts on wool socks and rubs her feet on a nylon carpet. How does static electricity build up in Valeria?(1 point)
Respons
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A group of students sets up an electric circuit with wires, a battery, and a light bulb. Why is their circuit called a direct
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Which statement about electric charges is correct?(2 points)
Responses Two objects with negative charges will attract each other.
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Sonidos
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How would you tell someone you just began something?
(1 point ) Responses acabo de empezar acabo de empezar acabas de terminar
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Question
What is the purpose of the Programa de Vigilantes Ecológicos, which is maintained by the office of México's
1 answer
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A person of mixed European and indigenous heritage is commonly referred to as a _______.
(1 point) Responses Mixtec Mixtec
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If people do not know they are infected with STIs, how can they put others at risk?
(1 point) Responses They will not get
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Use the table to answer the question.
This table displays the corresponding y-values for a given set of x-values. x-values
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Use the table to answer the question.
x-Values y-Values 0 5 1 15 2 45 3 135 4 405 Select the function that best models the data
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Use the table to answer the question.
This table shows the corresponding y-values for a given set of x-values. x-values y-values
1 answer
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Which type of function best models the data in the table?
Time and Growth Data Time (days) Growth (inches) 1 0 3 12 5 32 7 60 (1
1 answer
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Which of the following best models the data in the table?
Type of Function The table presents values of x and y, showing how y
1 answer
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Which disorder is characterized by the loss of mental abilities, abnormal behaviors, and personality changes?
(1 point) Responses
1 answer
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If a couple chooses to have their baby at home, the delivery usually involves _____.
(1 point) Responses an obstetrician an
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Jade was working on her statistics homework. One of the questions gave her a trend line and asked her to find the residuals. She
1 answer
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Jes used GeoGebra to find a linear model (trend line) of the data collected for their science project. They calculated the
1 answer
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Use the table to answer the question.
This table shows the data needed to create a scatter plot Data 1 Data 2 0 3 2 6 4 9 6 12 8
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What is the correlation coefficient of the following data? Is it a strong or weak correlation?
This table shows the relationship
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Find the correlation coefficient of the following linear equation using technology (such as GeoGebra). For your r-value, use the
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Use the table to answer the question.
This table displays the relationship between two variables, x and y, showing the
1 answer
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How does a maglev train move forward?(1 point)
Responses Magnets in the sides of the tracks constantly repel and attract magnets
1 answer
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Which is the best description of how to build an electromagnet?(1 point)
Responses Connect one end of a battery to an iron or
1 answer
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What creates the magnetic force in an electromagnet?(1 point)
Responses coiled wire coiled wire electric current electric current
1 answer
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Which is the best explanation of why Karim Abouelnaga would get a Master’s in Education Administration instead of Business?
(1
1 answer
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