WGU C165 PHYSICAL SCIENCES
PRACTICE QUESTIONS FROM EACH
TEST WITH ALL SOLUTIONS
When there is no conceivable way to prove a statement false, then the statement is -
correct answer- untestable
A scientific theory is discarded - correct answer- if it is contradicted by new
experiments or observations.
Theories help scientists to: - correct answer- explain large amounts of data
When might scientists analyze or test a model instead of the real system of interest? -
correct answer- 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? -
correct answer- The theory could be modified or discarded
Why does ultraviolet light damage the skin, but visible light does not? - correct answer-
Ultraviolet light has a shorter wavelength than visible light
The speed of a sound wave depends on - correct answer- medium
, The wavelength of a transverse wave travelling in a rope is - correct answer- the
distance from crest to crest or trough to trough
When energy changes from one type to another, the total energy - correct answer-
remains constant
Which statement describes inertia - correct answer- Inertia is an object's tendency to
remain stationary.
What does the mass of an object measure? - correct answer- The object's resistance
to being accelerated
What is shared or transferred when a chemical bond is formed? - correct answer-
Valence electrons
How is a compound formed? - correct answer- Electrons are transferred or shared
between atoms.
In what state is matter compressible? - correct answer- gas
Why does steam burn skin? - correct answer- Water vapor releases heat as it
condenses on the skin, which damages the tissue
Which type of chemical bond holds two atoms together in a molecule? - correct
answer- Covalent bond
Why does steam burn skin? - correct answer- Water vapor releases heat as it
condenses on the skin, which damages the tissue
Which force caused the hydrogen, helium, and lithium formed from the big bang to
collect and form stars, planets, and other objects, as well as to form the elements other
than hydrogen making up these objects? - correct answer- Gravity
Which property characterizes the outer planets compared to the inner planets? - correct
answer- Gaseous and less dense
Which kind of plate boundary occurs where the plates slide past each other? - correct
answer- Transform
In which layer of Earth's atmosphere do storms and other weather phenomena occur? -
correct answer- Troposphere
The atmospheric pressure meteorologists refer to in speaking of weather is - correct
answer- the force from the air divided by the area on which it acts
PRACTICE QUESTIONS FROM EACH
TEST WITH ALL SOLUTIONS
When there is no conceivable way to prove a statement false, then the statement is -
correct answer- untestable
A scientific theory is discarded - correct answer- if it is contradicted by new
experiments or observations.
Theories help scientists to: - correct answer- explain large amounts of data
When might scientists analyze or test a model instead of the real system of interest? -
correct answer- 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? -
correct answer- The theory could be modified or discarded
Why does ultraviolet light damage the skin, but visible light does not? - correct answer-
Ultraviolet light has a shorter wavelength than visible light
The speed of a sound wave depends on - correct answer- medium
, The wavelength of a transverse wave travelling in a rope is - correct answer- the
distance from crest to crest or trough to trough
When energy changes from one type to another, the total energy - correct answer-
remains constant
Which statement describes inertia - correct answer- Inertia is an object's tendency to
remain stationary.
What does the mass of an object measure? - correct answer- The object's resistance
to being accelerated
What is shared or transferred when a chemical bond is formed? - correct answer-
Valence electrons
How is a compound formed? - correct answer- Electrons are transferred or shared
between atoms.
In what state is matter compressible? - correct answer- gas
Why does steam burn skin? - correct answer- Water vapor releases heat as it
condenses on the skin, which damages the tissue
Which type of chemical bond holds two atoms together in a molecule? - correct
answer- Covalent bond
Why does steam burn skin? - correct answer- Water vapor releases heat as it
condenses on the skin, which damages the tissue
Which force caused the hydrogen, helium, and lithium formed from the big bang to
collect and form stars, planets, and other objects, as well as to form the elements other
than hydrogen making up these objects? - correct answer- Gravity
Which property characterizes the outer planets compared to the inner planets? - correct
answer- Gaseous and less dense
Which kind of plate boundary occurs where the plates slide past each other? - correct
answer- Transform
In which layer of Earth's atmosphere do storms and other weather phenomena occur? -
correct answer- Troposphere
The atmospheric pressure meteorologists refer to in speaking of weather is - correct
answer- the force from the air divided by the area on which it acts
