WGU C165 INTEGRATED PHYSICAL SCIENCES
COMPREHENSIVE QUESTIONS AND VERIFIED CORRECT
ANSWERS QUICK BREAK THROUGH LATEST UPDATE 2024
A mathematical model is used to predict the trajectory of a bullet fired from a gun.
Which discipline of physical science is used to develop this model? - (correct answer)
Physics
An environmental scientist monitors pollutants in a lake. Which two disciplines of
physical science does this scientist use? Choose 2 answers - (correct answer)
Chemistry
Earth Science
Which study involves both Earth science and physics? - (correct answer)
Calculating how much energy is associated with a hurricane
Which question could be answered with a controlled experiment? - (correct answer)
Does ice melt faster in an empty glass or in a glass full of water?
Which topic would be appropriate for a controlled experiment? - (correct answer)
Determining how fast different chemical pollutants dissolve in water
Sir Isaac Newton discovered that the force of gravity between two masses increases if
the masses increase, and decreases if the distance between the masses increases. No
experiments have ever contradicted this relationship. Which type of scientific statement
is this? - (correct answer) Law
The well-accepted scientific explanation for many characteristics of Earth's crust states
that the crust is broken into several large plates. These plates move slowly over the
mantle below because of convection and other processes. Earthquakes and volcanoes
are most common at places where the plates interact. Evidence from physics,
chemistry, and geology supports this explanation. Which type of scientific idea is this
explanation an example of? - (correct answer) Theory
Which question requires a controlled experiment to answer? - (correct answer)
Which type of rock contains the most calcium?
A student proposes that sugar will dissolve faster in rubbing alcohol than in water. The
student reasons that sugar and rubbing alcohol both contain carbon so they will mix
more easily. Which type of scientific idea is the student's proposal an example of? -
(correct answer) Hypothesis
Why was the shrinking Earth idea replaced by the theory of plate tectonics? - (correct
answer) Plate tectonics explained observations about Earth that the shrinking Earth
idea could not explain.
,Astronomers have long accepted that plate tectonics exists nowhere in our solar system
except on Earth. In 2011, a scientist analyzed 100 NASA-space-mission photographs of
Valles Marineris on Mars, the longest known series of canyons in the solar system. The
scientist found that Valles Marineris showed features found only in locations on Earth
where major tectonic plates divide. What would be the appropriate response of
scientists to this information? - (correct answer) Carry out further research to gain
more understanding of possible plate tectonics on Mars
According to the theory of plate tectonics, volcanoes are especially likely to form along
plate boundaries because of rising magma. New satellite data mapping the ocean floor
reveals thousands of seamounts, which are small volcanoes. Some of the seamounts
are in lines that could correspond to past or present plate boundaries, but many are not
aligned in this way. How should scientists appropriately respond to the idea that some
new mechanism of forming the volcanoes is involved? - (correct answer) Carry out
more research to understand better how the seamounts form
For many decades, scientists thought they understood how ozone breaks down in the
stratosphere, creating ozone holes. However, new data show significantly lower
reaction rates than can be explained by the long-held model. What is the appropriate
scientific approach for dealing with this contradiction? - (correct answer) Conduct
additional experiments to confirm the new data
For almost 1500 years most scientists in Europe accepted Ptolemy's geocentric
planetary model that suggested the sun revolved around Earth. By the eighteenth
century, most scientists supported a heliocentric model that suggests that Earth
revolves around the sun. What is an appropriate scientific basis for this change in view?
- (correct answer) The existing theory was changed to account for new data
A woman does pushups by lowering her body to the floor using her arms and then
pressing against the floor with her hands to push herself back up, as shown in the
image below. Which force causes her to rise? - (correct answer) The upward force
that the ground exerts on the woman
Two boxes sitting on the floor look identical, but one has more mass than the other.
What happens when the same net force, sufficient to overcome static friction, is applied
to each box? - (correct answer) The box with less mass accelerates more.
Two identical train engines are parked on parallel tracks. One engine has ten cars
attached, and the other has no cars attached. Each engine exerts the same net force,
which allows the train to overcome static friction. Which engine will be able to accelerate
more? - (correct answer) The engine not pulling any cars will accelerate more.
A woman applies an upward force to a basket filled with groceries. Assume she is
standing still.
, What will happen to the basket if the force she applies is greater than the force of
gravity? - (correct answer) The basket will move up.
A heavy truck and a light car travel at the same velocity side-by-side on the highway.
Both drivers apply the same braking force at the same moment.
What will happen to the two vehicles? - (correct answer) The car will slow down
more quickly than the truck.
Which force causes graphite from the tip of a pencil to transfer to the paper? - (correct
answer) Friction
Which force keeps Jupiter in orbit around the Sun? - (correct answer) Gravity
Which force causes a jet airplane to stop on a runway? - (correct answer) Friction
Which force causes meteors to burn up when they enter Earth's atmosphere? -
(correct answer) Friction
Which kind of electromagnetic radiation carries information to and from a cell phone
when it is used for a phone call? - (correct answer) Microwaves
A cashier who has been handed a hundred-dollar bill may check its authenticity by
holding it under a special lamp that emits electromagnetic radiation mostly at
wavelengths slightly shorter than visible light. The electromagnetic radiation makes a
pattern of previously invisible markings on the bill glow brightly, or fluoresce. Which kind
of electromagnetic radiation does the lamp emit to produce this effect? - (correct
answer) Ultraviolet Radiation
After natural disasters, first responders can locate survivors in the rubble by using
thermal detectors. Because the victims' bodies are warmer than their surroundings, the
difference in temperature is detected by electromagnetic waves. Which part of the
electromagnetic spectrum is being detected? - (correct answer) Infrared radiation
Airport security uses electromagnetic radiation to form images of objects inside
passenger luggage. Which type of electromagnetic radiation is used in this way? -
(correct answer) X-Rays
Which type of wave has a longitudinal motion? - (correct answer) Sound waves
Which is a characteristic of electromagnetic waves? - (correct answer) Transverse
wave motion
A slingshot is a Y-shaped stick with rubber bands between the prongs for shooting
stones and other small projectiles. A stone is shot by first placing it in the slingshot
holder, which is attached to the rubber bands. The stone and holder and then pulled
back, stretching the rubber bands. When released, the stone is propelled forward and
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