Atmosphere intro!
Presentation
•
Science
•
7th Grade
•
Practice Problem
•
Easy
+12
Standards-aligned
Anthony Kaltenbach
Used 14+ times
FREE Resource
14 Slides • 9 Questions
1
Chapter 11
The Atmosphere
Lesson 1 & 2
2
Earth's modern atmosphere consists mostly of Nitrogen as a diatomic molecule.
78% of the atmosphere is Nitrogen in this diatomic state.
The composition of Earth's atmosphere.
3
Dropdown
4
Oxygen in the form of the diatomic molecule O2 is the next most abundant gas in the atmosphere.
Oxygen is 21% of Earth's atmosphere!
Composition of Earth's atmosphere.
5
Argon is 0.9% of the atmosphere.
Trace gases fill up the rest as well as things like dust, water, and compounds.
Composition of Earth's atmosphere!
6
Match
Match the following to the right information.
Oxygen
Nitrogen
Argon
Carbon Dioxide
Dust
21% of Earth's atmosphere
78% of Earth's atmosphere
0.93% of the Earth's atmosphere.
Chemical compound that's about 0.03%
Solid particles in the atmosphere
21% of Earth's atmosphere
78% of Earth's atmosphere
0.93% of the Earth's atmosphere.
Chemical compound that's about 0.03%
Solid particles in the atmosphere
7
We call this: The Weather!
The condition of the atmosphere at a particular time & place!
8
Things that happen in one part of the atmosphere affect other parts.
The energy for this system is provided by the sun!
The atmosphere is a system!
9
Fill in the Blanks
10
Multiple Choice
What is a system?
a group of parts that work together as a whole.
A set of numbers that add to zero.
An isolated part of a chain of events.
The beginning of change.
11
Fill in the Blanks
12
The amount of mass in a volume.
d=m/v
Density
Amount of matter in an object.
Anything made from atoms has mass!
Mass
Amount of force on a given area!
P=F/A
Pressure
Air has properties!
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Drag and Drop
14
We call this
Air Pressure!
The result of a column of air pressing down on an object!
15
PSI is used in the USA
Pa is used everywhere else. (The SI unit of pressure.)
Pound Per Square Inch vs
Pascals
16
Match
Match the following!
Atmosphere
PSI
Pascals
Air Pressure
a layers of gases that surrounds Earth
Used in the US to measure Air Pressure
The SI unit to measure Air Pressure
The result of a column of air pressing
a layers of gases that surrounds Earth
Used in the US to measure Air Pressure
The SI unit to measure Air Pressure
The result of a column of air pressing
17
A device used to measure Air Pressure!
Barometers!
18
A device that measured the weight of the air by the amount of mercury being forced up a tube by the pressure from the atmosphere.
Mercury Barometer!
19
This barometer uses an air-tight chamber that flexes when exposed to different pressures. The flexing causes a needle to move and indicate the pressure.
Aneroid Barometer!
20
Most weather reports use this unit. A normal sunny day @ sea level is typically 30inHg
Inches of Mercury!
The National Weather Service uses millibars.
1mb = 100Pa
Normal atmospheric is 1013 mb
Millibars
1/1000th of a bar and is the amount of force it takes to move an object weighing a gram, one centimeter, in one second
This is what a Millibar means.
Units of Atmospheric Pressure:
21
Match
Match the following!
Weather reports use:
National Weather Service uses:
What has 4 wheels and flies?
Aneroid Barometer!
Mercury Barometer!
inches of Mercury (inHg)
Millibars
A garbage truck!
Aneroid Barometer!
Mercury Barometer!
inches of Mercury (inHg)
Millibars
A garbage truck!
22
The higher you go--the less air above you!
This means there is less pressure at higher altitudes and vice-versa!
Altitude Affects Air Pressure!
23
Match
Match the following!
Atmosphere!
78% of Atmosphere!
Measures air pressure!
Density
Weather!
Where Earth gets its energy!
78% of Atmosphere!
Measures air pressure!
Density
Weather!
Where Earth gets its energy!
Chapter 11
The Atmosphere
Lesson 1 & 2
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