Homework:

(—Add these to your notebook under the Topic: Investigating Air )                

Take Away:

—Air is a substance.  We know this because in a syringe, air takes up enough space that we can’t close the syringe with the tip plugged up. Some of you also saw the demonstration that a balloon with air in it weighs more than an identical, but empty, balloon. This proves that air has mass. Since air takes up space and has mass, it is a substance.

—Air has different gases in it; is made of gases with distinct properties, including Nitrogen, Oxygen , Argon, Water Vapor and Carbon Dioxide. We breathe in the oxygen (O2) in air. Air also has carbon dioxide (CO2) that we breathe out.

—Those gases have different properties: CO2 in water (H2O) turns green in the presence of BTB, but O2 in water does not.

Copy these Notes for tomorrow's lesson:

Date: Nov. 18, 2016                                  

Topic: Earth’s Atmosphere                     

Obj: TSW:

 

•Use computer simulation to sample air composition, temperature and pressure at different altitudes above Earth’s surface;

 

•Take 3 samples in each atmospheric layer and calculate average values;

 

•Compare the properties of the different atmospheric layers.

Vocab: (write the word in your notes, write the words and definition in your vocab section):

•Atmosphere -“wrapper” of air that surrounds Earth, made up of several layers.

 

•Troposphere– The bottom layer of the atmosphere up to 7.5 miles (12 km) high, where animals and plants and humans live, where we travel, where most weather happens.