Integrated Physical Sciences (MTC1) (PMTC) Exam
104 Questions with Verified Answers
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
Which question requires a controlled experiment to answer? - CORRECT ANSWER
Which type of rock contains the most calcium?
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
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
Two scientists announced that they were able to produce nuclear fusion in the
laboratory. However, many other scientists attempted the same experiment and
none were able to replicate the results. What is the appropriate scientific
approach for dealing with this contradiction? - CORRECT ANSWER Reject the first
scientists' discovery because the results could not be confirmed
Which force causes meteors to burn up when they enter Earth's atmosphere? -
CORRECT ANSWER Friction
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.
104 Questions with Verified Answers
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
Which question requires a controlled experiment to answer? - CORRECT ANSWER
Which type of rock contains the most calcium?
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
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
Two scientists announced that they were able to produce nuclear fusion in the
laboratory. However, many other scientists attempted the same experiment and
none were able to replicate the results. What is the appropriate scientific
approach for dealing with this contradiction? - CORRECT ANSWER Reject the first
scientists' discovery because the results could not be confirmed
Which force causes meteors to burn up when they enter Earth's atmosphere? -
CORRECT ANSWER Friction
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.
