Density
What is Density
It tells us how tightly packed something is
What are the main gases that make up the atmosphere? (was on worksheet)
Oxygen, Nitrogen, Carbon Dioxide, Argon
What is atmospheric pressure?
force exerted on a surface by the air above it as gravity pulls it to earth.
What do we do when we walk into class?
Take a seat
The higher you go in altitude the density does what?
Decreases
At sea level we say the air feels "Thicker" that on a mountain top. What does "thicker" mean?
More molecules packed in the air
Just like density, what factors change atmospheric pressure?
Do we walk into class loud? How should our voices be?
No, Voice level ZERO
Air Density is changed by what two factors?
Altitude and Temperature
What gas makes us the largest part of the earths atmosphere?
What do we measure atmospheric pressure with?
barometer
What do I need to put on every paper?
Altitude measures what?
How high or low something is
21%
Why do mountain climbers take precaution hiking into high altitudes?
Because the air is thinner. It is harder to breathe due to the low density of air.
Where do I put my folder at the end of class?
When we say something has "High Density" what do we mean?
The air is tightly packed. There are more molecules in the air.
If Oxygen is all around us, why do we feel short of breathe at higher altitudes?
Because at higher altitudes the density changes, meaning there is less oxygen in higher altitudes.
Why is the air pressure lower at higher altitudes?
Because there is less air. Less air means lower pressure no molecules to force down.
If I got trash on the floor what do I do?
Clean it up. Do not leave a mess