Define It
The moisture content of air.
What is humidity?
Name any air pollutant as noted in the text book.
What are sulfur oxides, nitrogen oxides, ozone, OR carbon monoxide? (Any one of these will do.)
When water evaporates, it does this to the surface it is touching.
What is cools it?
This is more humid -- (a) a rainforest, OR (b) the Sahara desert.
What is (a) a rainforest?
This cools you down when it evaporates, taking energy from your skin.
What is sweat?
Process by which certain gases (water vapor, carbon dioxide, & methane) trap heat that radiates from earth.
What is the greenhouse effect?
This is a natural air pollutant as noted in the text book.
What is volcanic activity (sulfur & nitrogen oxides) OR a lightning bolt (nitrogen oxides)? (Any one of these will do.)
This happens when you cover a burning candle with a jar.
What is the flame goes out?
A bathing suit dries faster in (a) a rainforest, OR (b) a desert.
What is (b) a desert?
The percentage of oxygen in dry air.
What is 21%?
Number of molecules/atoms of a substance in a mixture for every 1 million molecules/atoms in that mixture.
What is parts per million?
Burning this type of resource produces sulfur oxide pollutants.
What is coal, oil, wood, OR natural gas? (Any one of these will do.)
This happens when you add oxygen to a jar over a burning candle.
What is the flame burns higher, faster, & longer?
It is more humid when there is (a) fog, OR (b) a long, steady rain.
What is (b) a long, steady rain?
This gas makes up the majority of the air we breathe.
What is nitrogen?
The mass of water vapor contained in a certain volume of air.
What is absolute humidity?
Device coal-burning plants install in smokestacks to help clean sulfur oxides out of the gases produced by burning coal.
What are "scrubbers"? (Scrubbers clean using limestone.)
Humans and most life forms need this to live because the chemical reactions that supply energy for our bodies are combustion reactions.
What is oxygen? (Oxygen is necessary for combustion.)
When the temperature is the same on two days, but you feel cooler on the 2nd day, this day is more humid.
What is the 1st day?
The percentage of nitrogen in dry air.
What is 78%?
The mass of water vapor in the air at a given temperature compared to the maximum the air can hold at that temperature. (A ratio/percentage compared to 100% saturation.)
What is relative humidity?
What is a catalytic converter?
Adding oxygen to a combustion reaction is: (a) safe, or (b) risky.
What is (b) risky?
When you put a glass of water outside in 100% humidity, this much water evaporates from the glass.
What is none?
Ozone in the ozone layer is considered an essential substance because it blocks this threat.
What are the sun's ultraviolet rays?