ASSESMENT PREP – WGU C451 EXAM
2025 QUESTIONS AND ANSWERS
What must be true about a scientific hypothesis? - ANS Hypotheses must be falsifiable
Which of the following is important for the formation of scientific hypotheses and the
advancement of scientific knowledge? - ANS Creativity and cooperation
Which of the following correctly describes a theory? - ANS A group of well-tested hypotheses
that provide evidence to support explanations for scientific phenomena.
Which statement accurately describes the purpose of the scientific method? - ANS To
provide a systematic way for obtaining evidence to support or refute a hypothesis.
Which of the following statements correctly describes a scientific hypothesis? - ANS It is a
postulate that must be testable.
What is the benefit of using a systems approach when studying biology? - ANS A systems
approach focuses on how component parts interact and can then predict how a change in one
component affects the whole system.
Which of the following topics are included in a study of physics? - ANS motion, sound, energy
How does a study of science differ from a study of religion? - ANS Religion is based on faith,
beliefs, and spirituality whereas science depends on evidence generated from the experimental
scientific method.
1 @COPYRIGHT THEBRIGHT 2025/2026
, units are used to measure electricity - ANS Ohms, millivolts, amperes
What is the advantage of using a lever to lift a boulder? - ANS The lever allows a smaller
input force to be exerted over a longer distance to make it easier to move the boulder.
How can creativity be helpful to scientists? - ANS It helps in generating new ideas and new
hypotheses to test
definition correctly describes a fundamental scientific term - ANS A fact is something that
has been observed or experienced by many observers and agreed to be true.
following statement correctly describes the mechanical advantage of simple machines -
ANS A turn of an axle to move a wheel provides a mechanical advantage by decreasing the
input force while increasing the distance.
independent variable - ANS what is varied
dependent variable - ANS what is measured
measured using micrometers - ANS plant cell nuclei length and mitochondria width
Earth's magnetic field - ANS It deflects charged particles coming from outer space
describe the role of gravity in the formation of the solar system - ANS Gravitational
attraction caused matter in a nebula to condense ultimately forming the Sun and planets.
the role of gravity in the Earth-moon system - ANS Earth's gravity causes the moon to
elongate, changing its shape.
2 @COPYRIGHT THEBRIGHT 2025/2026
2025 QUESTIONS AND ANSWERS
What must be true about a scientific hypothesis? - ANS Hypotheses must be falsifiable
Which of the following is important for the formation of scientific hypotheses and the
advancement of scientific knowledge? - ANS Creativity and cooperation
Which of the following correctly describes a theory? - ANS A group of well-tested hypotheses
that provide evidence to support explanations for scientific phenomena.
Which statement accurately describes the purpose of the scientific method? - ANS To
provide a systematic way for obtaining evidence to support or refute a hypothesis.
Which of the following statements correctly describes a scientific hypothesis? - ANS It is a
postulate that must be testable.
What is the benefit of using a systems approach when studying biology? - ANS A systems
approach focuses on how component parts interact and can then predict how a change in one
component affects the whole system.
Which of the following topics are included in a study of physics? - ANS motion, sound, energy
How does a study of science differ from a study of religion? - ANS Religion is based on faith,
beliefs, and spirituality whereas science depends on evidence generated from the experimental
scientific method.
1 @COPYRIGHT THEBRIGHT 2025/2026
, units are used to measure electricity - ANS Ohms, millivolts, amperes
What is the advantage of using a lever to lift a boulder? - ANS The lever allows a smaller
input force to be exerted over a longer distance to make it easier to move the boulder.
How can creativity be helpful to scientists? - ANS It helps in generating new ideas and new
hypotheses to test
definition correctly describes a fundamental scientific term - ANS A fact is something that
has been observed or experienced by many observers and agreed to be true.
following statement correctly describes the mechanical advantage of simple machines -
ANS A turn of an axle to move a wheel provides a mechanical advantage by decreasing the
input force while increasing the distance.
independent variable - ANS what is varied
dependent variable - ANS what is measured
measured using micrometers - ANS plant cell nuclei length and mitochondria width
Earth's magnetic field - ANS It deflects charged particles coming from outer space
describe the role of gravity in the formation of the solar system - ANS Gravitational
attraction caused matter in a nebula to condense ultimately forming the Sun and planets.
the role of gravity in the Earth-moon system - ANS Earth's gravity causes the moon to
elongate, changing its shape.
2 @COPYRIGHT THEBRIGHT 2025/2026
