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WGU C165 OA EXAM INTEGRATED PHYSICAL SCIENCES OA2025/2026
ACTUAL EXAM QUESTION BANK 300 QUESTIONS AND CORRECT
DETAILED ANSWERS|ALREADY GRADED A+
Which of these is generally regarded by scientists to be the basis for deciding issues in
science?
1. The reputation of the researchers for careful work
2. Empirical evidence including experiments and observations
3. Personal faith in the idea proposed
4. Whether the idea is the simplest one the researcher can think of
- ......ANSWER........2. Empirical evidence including experiments and observations
Which statement MOST accurately describes how our present knowledge of the structure
of atoms, as being composed of electrons, protons, and neutrons, developed?
1. Our modern understanding of atoms was provided by Dalton's explanation of
chemical laws.
2. Our understanding of atoms came from the ancient Greeks, who postulated that
atoms were composed of electrons, neutrons, and protons.
3. Our understanding of atoms came piece by piece from many different scientific
researchers.
4. Our understanding of atoms was provided by Rutherford's experiment that led him
to propose a planetary model. - ......ANSWER........3. Our understanding of atoms
came piece by piece from many different scientific researchers.
Why is it important to have standard measures for physical quantities?
1. To allow for the comparison of measurements with anyone familiar with the
measurement system.
2. To make it more difficult for scientists to exchange and compare results of their
measurements.
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3. To make measurements, such as length, easier to perform.
4. To allow scientists from other countries to use standard measures and not make up
their own units - ......ANSWER........1. To allow for the comparison of measurements
with anyone familiar with the measurement system.
Which of the following units is NOT a derived unit?
1. km/hr.
2. m/s
3. kilometer
4. g/cm3 - ......ANSWER........3. kilometer
What is the official SI base unit for mass?
1. kilogram
2. gram
3. meter
4. second - ......ANSWER........1. kilogram
What is the official SI base unit for length?
1. kelvin
2. meter
3. gram
4. kilometer - ......ANSWER........2. meter
What is the official SI base unit for time?
1. meters/second
2. hour
3. second
4. kilograms - ......ANSWER........3. second
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Which of these has values that are expressed in terms of a derived unit in the SI system?
1. area
2. length
3. time
4. mass - ......ANSWER........1. area
Which of these is NOT a base unit in the SI system?
1. meter
2. kilogram
3. kilometer
4. second - ......ANSWER........3. kilometer
Which of these is a derived quantity?
1. mass
2. time
3. temperature
4. volume - ......ANSWER........4. volume
What characteristic of a sample of liquid does the tool shown here measure?
1. mass
2. volume
3. density
4. weight - ......ANSWER........2. volume
What device is commonly used to measure temperature?
1. scale
2. thermometer
3. ruler
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4. clock - ......ANSWER........2. thermometer
Which device could NOT be used to measure length?
1. tape measure
2. meter stick
3. ruler
4. balance scale - ......ANSWER........4. balance scale
Which of the following pairs of variables has an inverse relationship?
1. the volume of a sample of liquid and the mass of the sample
2. Your driving speed and the time required to drive a certain distance
3. how hard an object is pushed and how fast it moves
4. the speed of a hurricane's winds and the amount of damage they cause"
- ......ANSWER........2. Your driving speed and the time required to drive a certain
distance
Which of the following pairs of variables have a direct relationship?
1. the mass of a car and the amount of force needed to move the car
2. the steepness of a ramp and the amount of time needed for a ball to roll down the
ramp
3. how fast water flows out of a faucet and how long it takes the water to fill a bucket
4. the number of people working on a project and the time it takes to finish the project.
- ......ANSWER........1. the mass of a car and the amount of force needed to move
the car
For which of the following cases is work NOT done on the specified object?
1. a librarian holding a book in her hands (object is the book)
2. lifting a glass (object is the glass)
3. racing upstairs (object is your body)
WGU C165 OA EXAM INTEGRATED PHYSICAL SCIENCES OA2025/2026
ACTUAL EXAM QUESTION BANK 300 QUESTIONS AND CORRECT
DETAILED ANSWERS|ALREADY GRADED A+
Which of these is generally regarded by scientists to be the basis for deciding issues in
science?
1. The reputation of the researchers for careful work
2. Empirical evidence including experiments and observations
3. Personal faith in the idea proposed
4. Whether the idea is the simplest one the researcher can think of
- ......ANSWER........2. Empirical evidence including experiments and observations
Which statement MOST accurately describes how our present knowledge of the structure
of atoms, as being composed of electrons, protons, and neutrons, developed?
1. Our modern understanding of atoms was provided by Dalton's explanation of
chemical laws.
2. Our understanding of atoms came from the ancient Greeks, who postulated that
atoms were composed of electrons, neutrons, and protons.
3. Our understanding of atoms came piece by piece from many different scientific
researchers.
4. Our understanding of atoms was provided by Rutherford's experiment that led him
to propose a planetary model. - ......ANSWER........3. Our understanding of atoms
came piece by piece from many different scientific researchers.
Why is it important to have standard measures for physical quantities?
1. To allow for the comparison of measurements with anyone familiar with the
measurement system.
2. To make it more difficult for scientists to exchange and compare results of their
measurements.
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3. To make measurements, such as length, easier to perform.
4. To allow scientists from other countries to use standard measures and not make up
their own units - ......ANSWER........1. To allow for the comparison of measurements
with anyone familiar with the measurement system.
Which of the following units is NOT a derived unit?
1. km/hr.
2. m/s
3. kilometer
4. g/cm3 - ......ANSWER........3. kilometer
What is the official SI base unit for mass?
1. kilogram
2. gram
3. meter
4. second - ......ANSWER........1. kilogram
What is the official SI base unit for length?
1. kelvin
2. meter
3. gram
4. kilometer - ......ANSWER........2. meter
What is the official SI base unit for time?
1. meters/second
2. hour
3. second
4. kilograms - ......ANSWER........3. second
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Which of these has values that are expressed in terms of a derived unit in the SI system?
1. area
2. length
3. time
4. mass - ......ANSWER........1. area
Which of these is NOT a base unit in the SI system?
1. meter
2. kilogram
3. kilometer
4. second - ......ANSWER........3. kilometer
Which of these is a derived quantity?
1. mass
2. time
3. temperature
4. volume - ......ANSWER........4. volume
What characteristic of a sample of liquid does the tool shown here measure?
1. mass
2. volume
3. density
4. weight - ......ANSWER........2. volume
What device is commonly used to measure temperature?
1. scale
2. thermometer
3. ruler
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4. clock - ......ANSWER........2. thermometer
Which device could NOT be used to measure length?
1. tape measure
2. meter stick
3. ruler
4. balance scale - ......ANSWER........4. balance scale
Which of the following pairs of variables has an inverse relationship?
1. the volume of a sample of liquid and the mass of the sample
2. Your driving speed and the time required to drive a certain distance
3. how hard an object is pushed and how fast it moves
4. the speed of a hurricane's winds and the amount of damage they cause"
- ......ANSWER........2. Your driving speed and the time required to drive a certain
distance
Which of the following pairs of variables have a direct relationship?
1. the mass of a car and the amount of force needed to move the car
2. the steepness of a ramp and the amount of time needed for a ball to roll down the
ramp
3. how fast water flows out of a faucet and how long it takes the water to fill a bucket
4. the number of people working on a project and the time it takes to finish the project.
- ......ANSWER........1. the mass of a car and the amount of force needed to move
the car
For which of the following cases is work NOT done on the specified object?
1. a librarian holding a book in her hands (object is the book)
2. lifting a glass (object is the glass)
3. racing upstairs (object is your body)
