WGU C165 Physical Sciences Practice
Questions from each test
When there is no conceivable way to prove a statement false, then the statement is - ANS
untestable
A scientific theory is discarded - ANS if it is contradicted by new experiments or
observations.
Theories help scientists to: - ANS explain large amounts of data
When might scientists analyze or test a model instead of the real system of interest? - ANS
When the real system is too complex or difficult to analyze
If new data were found to disagree with a long-standing theory, what could happen? - ANS
The theory could be modified or discarded
Why does ultraviolet light damage the skin, but visible light does not? - ANS Ultraviolet light
has a shorter wavelength than visible light
The speed of a sound wave depends on - ANS medium
The wavelength of a transverse wave travelling in a rope is - ANS the distance from crest to
crest or trough to trough
When energy changes from one type to another, the total energy - ANS remains constant
Which statement describes inertia - ANS Inertia is an object's tendency to remain
stationary.
What does the mass of an object measure? - ANS The object's resistance to being
accelerated
What is shared or transferred when a chemical bond is formed? - ANS Valence electrons
Questions from each test
When there is no conceivable way to prove a statement false, then the statement is - ANS
untestable
A scientific theory is discarded - ANS if it is contradicted by new experiments or
observations.
Theories help scientists to: - ANS explain large amounts of data
When might scientists analyze or test a model instead of the real system of interest? - ANS
When the real system is too complex or difficult to analyze
If new data were found to disagree with a long-standing theory, what could happen? - ANS
The theory could be modified or discarded
Why does ultraviolet light damage the skin, but visible light does not? - ANS Ultraviolet light
has a shorter wavelength than visible light
The speed of a sound wave depends on - ANS medium
The wavelength of a transverse wave travelling in a rope is - ANS the distance from crest to
crest or trough to trough
When energy changes from one type to another, the total energy - ANS remains constant
Which statement describes inertia - ANS Inertia is an object's tendency to remain
stationary.
What does the mass of an object measure? - ANS The object's resistance to being
accelerated
What is shared or transferred when a chemical bond is formed? - ANS Valence electrons
