WGU C165 PREASSESSMENT: INTEGRATED PHYSICAL SCIENCES PHTC-GRADED A
Attempt #1
Status: Passed
1.
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?
YOUR CORRECT
ANSWER ANSWER
Physics
Chemistry
Earth science
Astronomy
2.
An environmental scientist monitors pollutants in a lake.
Which two disciplines of physical science does this scientist use?
Choose 2 answers
YOUR CORRECT
ANSWER ANSWER
Astronomy
Chemistry
Earth science
Physics
3.
Which study involves both Earth science and physics?
YOUR CORRECT
ANSWER ANSWER
Calculating how much energy is associated with a hurricane
Measuring the energy produced by a generator
Comparing the composition of crude oil from different regions
Monitoring changes in phosphorus levels of a lake
4.
Which question could be answered with a controlled experiment?
YOUR CORRECT
ANSWER ANSWER
Does ice melt faster in an empty glass or in a glass full of water?
Do all planets have the same shape of orbit around the sun?
What is the maximum distance between Earth and Jupiter?
, YOUR CORRECT
ANSWER ANSWER
What is the length of the longest river in North America?
5.
Which topic would be appropriate for a controlled experiment?
YOUR CORRECT
ANSWER ANSWER
Determining how fast different chemical pollutants dissolve in water
Comparing the elements present in different stars
Measuring how fast a river flows
Predicting the path of a tornado
6.
Which question requires a controlled experiment to answer?
YOUR CORRECT
ANSWER ANSWER
Which type of rock contains the most calcium?
Which planet has the most moons?
Which elements are found in Earth's atmosphere?
Which fossils formed earliest in Earth's history?
7.
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?
YOUR CORRECT
ANSWER ANSWER
Hypothesis
Theory
Law
Inference
8.
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?
YOUR CORRECT
ANSWER ANSWER
Hypothesis
Theory
, YOUR CORRECT
ANSWER ANSWER
Law
Prediction
9.
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?
YOUR CORRECT
ANSWER ANSWER
Hypothesis
Theory
Law
Observation
10.
Why was the shrinking Earth idea replaced by the theory of plate tectonics?
YOUR CORRECT
ANSWER ANSWER
Plate tectonics was a new theory, which made it more reliable.
Plate tectonics explained observations about Earth that the shrinking Earth idea could not explain.
Geologists voted on which theory to accept, and chose plate tectonics.
Many well-known geologists were involved in proposing plate tectonics.
11.
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?
YOUR CORRECT
ANSWER ANSWER
Reject plate tectonics on Mars as the explanation because it contradicts accepted science
Decide whether to accept plate tectonics on Mars based on the reputation of scientists involved
Hold public debates among scientists and then vote whether plate tectonics occurs on Mars
Carry out further research to gain more understanding of possible plate tectonics on Mars
12.
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?
Attempt #1
Status: Passed
1.
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?
YOUR CORRECT
ANSWER ANSWER
Physics
Chemistry
Earth science
Astronomy
2.
An environmental scientist monitors pollutants in a lake.
Which two disciplines of physical science does this scientist use?
Choose 2 answers
YOUR CORRECT
ANSWER ANSWER
Astronomy
Chemistry
Earth science
Physics
3.
Which study involves both Earth science and physics?
YOUR CORRECT
ANSWER ANSWER
Calculating how much energy is associated with a hurricane
Measuring the energy produced by a generator
Comparing the composition of crude oil from different regions
Monitoring changes in phosphorus levels of a lake
4.
Which question could be answered with a controlled experiment?
YOUR CORRECT
ANSWER ANSWER
Does ice melt faster in an empty glass or in a glass full of water?
Do all planets have the same shape of orbit around the sun?
What is the maximum distance between Earth and Jupiter?
, YOUR CORRECT
ANSWER ANSWER
What is the length of the longest river in North America?
5.
Which topic would be appropriate for a controlled experiment?
YOUR CORRECT
ANSWER ANSWER
Determining how fast different chemical pollutants dissolve in water
Comparing the elements present in different stars
Measuring how fast a river flows
Predicting the path of a tornado
6.
Which question requires a controlled experiment to answer?
YOUR CORRECT
ANSWER ANSWER
Which type of rock contains the most calcium?
Which planet has the most moons?
Which elements are found in Earth's atmosphere?
Which fossils formed earliest in Earth's history?
7.
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?
YOUR CORRECT
ANSWER ANSWER
Hypothesis
Theory
Law
Inference
8.
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?
YOUR CORRECT
ANSWER ANSWER
Hypothesis
Theory
, YOUR CORRECT
ANSWER ANSWER
Law
Prediction
9.
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?
YOUR CORRECT
ANSWER ANSWER
Hypothesis
Theory
Law
Observation
10.
Why was the shrinking Earth idea replaced by the theory of plate tectonics?
YOUR CORRECT
ANSWER ANSWER
Plate tectonics was a new theory, which made it more reliable.
Plate tectonics explained observations about Earth that the shrinking Earth idea could not explain.
Geologists voted on which theory to accept, and chose plate tectonics.
Many well-known geologists were involved in proposing plate tectonics.
11.
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?
YOUR CORRECT
ANSWER ANSWER
Reject plate tectonics on Mars as the explanation because it contradicts accepted science
Decide whether to accept plate tectonics on Mars based on the reputation of scientists involved
Hold public debates among scientists and then vote whether plate tectonics occurs on Mars
Carry out further research to gain more understanding of possible plate tectonics on Mars
12.
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?
