WGU c165
1. (physical science) When a candle burns, its molecules consisting of hydro- gen and carbon atoms combine with
oxygen to produce carbon dioxide and water. The physical science that is BEST for dealing with how the light
from the candle travels through space is: Physics
2. (physical science) Auroras are bursts of light that happen when charged particles from the sun interact with
Earth's magnetic field and atoms and molecules in our atmosphere. Which physical science is BEST SUITED
explain the interactions of the charged particles with magnetic field?: Physics
3. (physical science) The physical science that is BEST for finding the best locations to drill for the petroleum
used to make the candles is: Earth Science
4. (physical science) The science BEST for studying how hydrogen sulfide and carbon dioxide react is: chemistry
5. (physical science) Acidic soil reacts with common rock-forming minerals to release ions to form new
minerals. Which physical science is BEST for studying these processes?: chemistry
6. (physical science) The science BEST for studying photosynthetic bacteria is: life science
7. (physical science) What is usually the main advantage of being able to do a laboratory experiment rather than
a field study if both investigations allow you to collect similar information?: It is possible to change only one
variable at a time.
8. (physical science) Which of the following terms best describes a research project that involves sending a space
probe to a distant asteroid to land on it and collect data?: an observational study
9. (physical science) A space probe is an unmanned spacecraft. Which of these terms BEST describes a
research project in which a space probe is sent to collect soil samples on planet Mars and then report the data
back to Earth?: A field study
10.(physical science) Which of these fields depends the MOST on observa- tional studies?: earth science
11.(physical science) The kinetic theory of gases is based on the assumption that the molecules that form the gas
are in random motion and bounce off the walls of their container and off each other as if they were billiard balls.
The forces between real molecules are more complicated.: Using a model
12.(physical science) Why can't astronomers carry out a scientific research study to determine which visible
star, other than our sun, is the nicest?: There is no way to prove any answer wrong.
13.(physical science) In 1811, physicist Amedo Avogadro proposed that the same volume of two different gases
at the same temperature and pressure
, WGU c165
contain the same number of molecules. His proposal received little attention until the 1850s, when chemist
Stanislao Cannizzaro, in particular, argued that Avogadro's idea agreed with all the physical and chemical laws
discovered up to that time. Today, Avogadro's statement about gases is sometimes referred to as "Avogadro's
hypothesis" or "Avogadro's law." Which statement de- scribes when each of those two terms would be MOST
accurately applied?: it is most accurately described as a hypothesis starting in 1811, but a law after the 1850's
14.(physical science) Albert Einstein developed a detailed and far-reaching explanation of gravity being
caused by the bending of space and time by the presence of matter. This explanation made far-reaching
predictions of phenomena that were later confirmed, such as the bending of the path of light when the path
passed close by a star. It is currently the basis for many phenomena observed in astronomy. Einstein's
explanation would be MOST accurately described as a: theory
15.(physical science) Which of these describes a statement that has usually NOT yet been tested?: hypothesis
16.(physical science) Which of these is generally regarded by scientists to be the basis for deciding issues in
science?: empirical evidence including experi- ments and observation
17.(physical science) Which statement MOST accurately describes how our present knowledge of the structure
of atoms, as being composed of electrons, protons, and neutrons, developed?: Our understanding of atoms came
piece by piece from many different scientific researchers.
18.(physical science) The origin of water on Earth is not yet fully understood. To test one of the hypotheses,
scientists launched a gigantic observational balloon to the height of almost 130,000 feet to measure the amounts of
water in comets and asteroids based on the light reflected from these objects. The science BEST SUITED to
calculating the forces required to launch the balloon to the required altitude is: physics
19.(physical science) The sun produces its energy by nuclear fusion reac- tions, in which smaller nuclei are
combined to produce larger nuclei. Forces responsible for the nuclear fusion are called nuclear forces. The
physical science that studies nuclear forces is: physics
20.(physical science) The observational balloon is filled with helium and vented to the atmosphere. The height it
reaches depends on the changes of the atmospheric pressure during the day and night cycle. The science BEST for
studying this daily warming and cooling of the atmosphere is: earth science
1. (physical science) When a candle burns, its molecules consisting of hydro- gen and carbon atoms combine with
oxygen to produce carbon dioxide and water. The physical science that is BEST for dealing with how the light
from the candle travels through space is: Physics
2. (physical science) Auroras are bursts of light that happen when charged particles from the sun interact with
Earth's magnetic field and atoms and molecules in our atmosphere. Which physical science is BEST SUITED
explain the interactions of the charged particles with magnetic field?: Physics
3. (physical science) The physical science that is BEST for finding the best locations to drill for the petroleum
used to make the candles is: Earth Science
4. (physical science) The science BEST for studying how hydrogen sulfide and carbon dioxide react is: chemistry
5. (physical science) Acidic soil reacts with common rock-forming minerals to release ions to form new
minerals. Which physical science is BEST for studying these processes?: chemistry
6. (physical science) The science BEST for studying photosynthetic bacteria is: life science
7. (physical science) What is usually the main advantage of being able to do a laboratory experiment rather than
a field study if both investigations allow you to collect similar information?: It is possible to change only one
variable at a time.
8. (physical science) Which of the following terms best describes a research project that involves sending a space
probe to a distant asteroid to land on it and collect data?: an observational study
9. (physical science) A space probe is an unmanned spacecraft. Which of these terms BEST describes a
research project in which a space probe is sent to collect soil samples on planet Mars and then report the data
back to Earth?: A field study
10.(physical science) Which of these fields depends the MOST on observa- tional studies?: earth science
11.(physical science) The kinetic theory of gases is based on the assumption that the molecules that form the gas
are in random motion and bounce off the walls of their container and off each other as if they were billiard balls.
The forces between real molecules are more complicated.: Using a model
12.(physical science) Why can't astronomers carry out a scientific research study to determine which visible
star, other than our sun, is the nicest?: There is no way to prove any answer wrong.
13.(physical science) In 1811, physicist Amedo Avogadro proposed that the same volume of two different gases
at the same temperature and pressure
, WGU c165
contain the same number of molecules. His proposal received little attention until the 1850s, when chemist
Stanislao Cannizzaro, in particular, argued that Avogadro's idea agreed with all the physical and chemical laws
discovered up to that time. Today, Avogadro's statement about gases is sometimes referred to as "Avogadro's
hypothesis" or "Avogadro's law." Which statement de- scribes when each of those two terms would be MOST
accurately applied?: it is most accurately described as a hypothesis starting in 1811, but a law after the 1850's
14.(physical science) Albert Einstein developed a detailed and far-reaching explanation of gravity being
caused by the bending of space and time by the presence of matter. This explanation made far-reaching
predictions of phenomena that were later confirmed, such as the bending of the path of light when the path
passed close by a star. It is currently the basis for many phenomena observed in astronomy. Einstein's
explanation would be MOST accurately described as a: theory
15.(physical science) Which of these describes a statement that has usually NOT yet been tested?: hypothesis
16.(physical science) Which of these is generally regarded by scientists to be the basis for deciding issues in
science?: empirical evidence including experi- ments and observation
17.(physical science) Which statement MOST accurately describes how our present knowledge of the structure
of atoms, as being composed of electrons, protons, and neutrons, developed?: Our understanding of atoms came
piece by piece from many different scientific researchers.
18.(physical science) The origin of water on Earth is not yet fully understood. To test one of the hypotheses,
scientists launched a gigantic observational balloon to the height of almost 130,000 feet to measure the amounts of
water in comets and asteroids based on the light reflected from these objects. The science BEST SUITED to
calculating the forces required to launch the balloon to the required altitude is: physics
19.(physical science) The sun produces its energy by nuclear fusion reac- tions, in which smaller nuclei are
combined to produce larger nuclei. Forces responsible for the nuclear fusion are called nuclear forces. The
physical science that studies nuclear forces is: physics
20.(physical science) The observational balloon is filled with helium and vented to the atmosphere. The height it
reaches depends on the changes of the atmospheric pressure during the day and night cycle. The science BEST for
studying this daily warming and cooling of the atmosphere is: earth science
