1. The Air Around Us Investigation 2, Part 1 -edited for Website
Where’s the Air?
The Air Around Us
Investigation 2, Part 1
-edited for Website
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2. Air Weather happens close to the earth’s surface or Troposphere.
We live surrounded by air, a mixture of gases.
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3. Air plays a very important role in the weather
Weather Tools
First investigation
To measure weather conditions
Air plays a very important role in the weather
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4. The Experiment
Investigate air with your shoulder partner using a tube and giant syringe
Do not:
use your syringe to annoy another student
point either end of the syringe at another student
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5. Questions As you work with the syringe answer the following questions:
What happens to air in the syringe when you push and pull on the plunger?
What can air do?
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6. Air Investigations (Lab Handout)
3 Part Investigation
3 Observations
3 Questions
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Student Lab Notebook-P.3

7. The Experiment What happens to the air in the syringe…
… when you push and pull on the plunger? Add a binder clip?
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Student Lab Notebook-P.3

8. Results The air is pushed into a smaller space
When you clamp the tube closed and push the plunger down what happens to the air?
The air is pushed into a smaller space
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Student Lab Notebook-P.3

9. Observations The air pushes the plunger back up
What happens when you let go of the plunger after pushing it down?
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Student Lab Notebook-P.3
The air pushes the plunger back up

10. more air less air the same amount
Results
Is there
more air less air the same amount
of air in the syringe when the air is pushed into a smaller space?
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Student Lab Notebook-P.3
The Same Amount

11. Observations
What do you think happens to the air when it is pushed into a smaller space?
What happens to push the plunger back out when you release pressure on the plunger?
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Student Lab Notebook-P.3

12. Compression Air forced into a smaller space
The air (same amount) was compressed
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13. Compression and Pressure
Compressed air…
Pushes back
with a force equal to the force compressing it
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Student Lab Notebook-P.3
Compressed air will push the plunger out
Pressure is the push back of compressed air

14. Conduct an Experiment What happens? Why does this happen? Gets smaller
The air inside the foam is being compressed
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Student Lab Notebook-P.3

15. Compression MultiMedia
View the “Gas in a Syringe” animation
Gas in a Syringe model
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Student Lab Notebook-P.3
Use the FOSS Weather and Water CD-ROM to show “Gas in a Syringe” animation.

16. What is the air made of? Everything is made of atoms, including air
Molecules of gases move around freely
There is a lot of space between molecules of gases
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Student Lab Notebook-P.3

17. Compression and air Volume of air
Is compressed into a smaller space
The same number of molecules are pushed closer together
Molecules bump into each other more
Pressure pushes in all directions
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18. Our Question
Does air have weight?
Does air have mass?
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19. Weight? How can we confirm that something has mass?
We can weigh it
Weight - pull or force between Earth and the matter in an object or substance
Can vary slightly at different places in Earth
Can vary greatly on different planets
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20. Prove It! Does air have mass? Available materials for use:
-balloons - tape
- plastic zip bags - paper clips
- string clear straws
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Safety Tip- Be sure to check for student Latex Allergies before distributing balloons!! The balloons in kit are made of Latex!
Student Lab Notebook P.3

21. Prove It! In your group design an experiment to show air has mass.
Use 1 Science Buddies sheet, but all members contribute. Write name in the box you wrote.
Use your metacognitive skills. (Think about your thinking)
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Safety Tip- Be sure to check for student Latex Allergies before distributing balloons!! The balloons in kit are made of Latex!
Student Lab Notebook P.3

22. Reading Turn to p. 6 in text Read “What’s in the Air?”
Answer the questions on the bottom of pg. 3 lab worksheet.
Resource Book- P.6

23. Ticket Out
To leave today, on a half sheet of paper, complete the following.
Three key points from your learning.
One concept that I am square with. (completely understand)
Write a question that is still rolling around in your head.