Weight of an object which depends on its mass, expressed in newtons.
What is Force
100
Its composition is relatively uniform throughout.
What is the troposphere?
100
The larger the force, the more pressure that is exerted.
What is the direct relationship between force and pressure?
100
Scientists use certain units when communicating results.
What is the International System of Units (SI)?
100
It is the Kinetic Molecular Theory.
What is the meaning of the acronym "KMT"?
200
Refers to total surface area of an object.
What is Area?
200
1 atmospehere = 101.3 kPa
What is a conversion factor for atmospheric pressure
200
Kinetic energy
What is the variable that determines the speed of a gas particle?
200
Force applied divided by the surface area upon which the force is applied.
What is the mathematical equation that expresses pressure?
200
Energy in motion; the energy associated with moving molecules.
What is kinetic energy?
300
Expresses the fundamental physical qualities of the modernized metric system.
What is a base unit?
300
The Earth's weather and most of its mass are located within the first 10-15 km of Earth's surface.
What is the troposphere
300
A bag of potato chips looks "puffed up" due to the imbalance of pressure inside the bag and that of the atmospheric pressure.
What is the result of change in altitude on a bag of potato chips when hiking in the mountains?
300
When one-newton (1N) force is exerted upon an area of one square meter (m*m)
What is the pascal (Pa)?
300
It is about 11 times greater than the diameter (size) of the molecules.
What is the average separation between gaseous molecules at 1 atm pressure and 0 degrees Celsius?
400
newton (N)
What is the Si derived unit for force?
400
Human activity, like burning fossil fuels, and natural phenomena, such as volcanic eruptions, can alter the concentrations of some trace gases and add other substances to the air.
What is a cause of decreased air quality?
400
The temperature changes depending on volume, amount, and pressure.
What is a property of gas?
400
A device that measures atmospheric pressure.
What is a barometer?
400
Although individual molecules in agas sample may gain or lose kinetic energy, there is no gain or loss in total kinetic energy from all of these collisions.
What is meant by elastic collisions (molecular)?
500
Formed by mathematically combining two or more base units.
What is a derived unit?
500
Invented the barometer in the mid-1600's; a derived unit was developed to credit his contribution to better understanding atmospheric pressure.
Who is Evangelista Torricelli?
500
Molecular collisions occur with the container walls and gas molecules.
What is the cause of changes in gas pressure?
500
A unit commonly used by scientists that represents the force of about 1000, 000 N on each square meter of your body air exerts resulting in about 100kPa.
What is the atmosphere (atm)?
500
These postulates are used to make predictions and explain various observations of gas behaviors.
What is the kinetic molecular theory (KMT) of gases?