WGU C165 Physical Sciences Practice
Questions & Answers
A hydroelectric power plan converts the energy from flowing water in rivers into
electric power. Water exists on Earth in all three states of matter as it makes its way
through the water cycle. What is the main driving force for the water cycle? -
------------ANS: The sun by causing evaporation
A scientific theory is discarded - ------------ANS: if it is contradicted by new
experiments or observations.
How does metamorphic rock form? - ------------ANS: heat and pressure
How does sedimentary rock form? - ------------ANS: It forms from sediment being
compacted and cemented.
How is a compound formed? - ------------ANS: Electrons are transferred or shared
between atoms.
If new data were found to disagree with a long-standing theory, what could happen?
- ------------ANS: The theory could be modified or discarded
In what state is matter compressible? - ------------ANS: gas
In which layer of Earth's atmosphere do storms and other weather phenomena
occur? - ------------ANS: Troposphere
Is cooking a chemical change? - ------------ANS: Yes
The atmospheric pressure meteorologists refer to in speaking of weather is -
------------ANS: the force from the air divided by the area on which it acts
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
Theories help scientists to: - ------------ANS: explain large amounts of data
What charge does a neutron have? - ------------ANS: neutral
Questions & Answers
A hydroelectric power plan converts the energy from flowing water in rivers into
electric power. Water exists on Earth in all three states of matter as it makes its way
through the water cycle. What is the main driving force for the water cycle? -
------------ANS: The sun by causing evaporation
A scientific theory is discarded - ------------ANS: if it is contradicted by new
experiments or observations.
How does metamorphic rock form? - ------------ANS: heat and pressure
How does sedimentary rock form? - ------------ANS: It forms from sediment being
compacted and cemented.
How is a compound formed? - ------------ANS: Electrons are transferred or shared
between atoms.
If new data were found to disagree with a long-standing theory, what could happen?
- ------------ANS: The theory could be modified or discarded
In what state is matter compressible? - ------------ANS: gas
In which layer of Earth's atmosphere do storms and other weather phenomena
occur? - ------------ANS: Troposphere
Is cooking a chemical change? - ------------ANS: Yes
The atmospheric pressure meteorologists refer to in speaking of weather is -
------------ANS: the force from the air divided by the area on which it acts
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
Theories help scientists to: - ------------ANS: explain large amounts of data
What charge does a neutron have? - ------------ANS: neutral
