Ms. Longo Earth Science Weather & Water

9/28

Agenda Finish I-Check 1-2 Reading Reading Review

Do Now Hand in ClassDojo permission slip Draw a line of learning under your last NB entry Write a short summary of what you know about air and the atmosphere

Weather Chart Copy Weather from 9/24 (period 3 only) Chart today’s weather

I-Check 1-2 Finish I-Check 1-2 Write letter answers to 1-11 (a,b,c,d,f,g,h,j) on back of Scantron to solve any confusion Write your answer to #12 on the back of the answer sheet. DO NOT WRITE ON THE QUESTION PAGE On Scantron: A=f B=g C=h D=J

When done with test Read “A Thin Blue Veil” p

When done with reading Read “A Thin Blue Veil” Prepare to answer questions p. 28

Reading Discussion Be prepared to state the main ideas of each paragraph/section of the reading

9/29

Agenda Intro to Air Pressure FQ 3.1

Do Now Notebook maintenance Copy Weather Be prepared to answer the following question:

Do Now Be prepared to answer: When we connected the syringes with the tubing, and pushed on both plungers, what happened? Where have you heard/seen the word pressure used to describe weather?

FQ 3.1 How does pressure affect air? Please write the Focus Question in your notebook Do not answer now Add to your Table of Contents

Demonstration Tightly closed plastic jar Inside: glass bottle half filled with green water A stopper with a clear plastic tube is pushed into the glass bottle Notice the water level in the tube

Notebook sheet 4 What do you think will happen to the water in the clear tube when I squeeze the jar? Answer on NB sheet 4 Attach sheet next to a clean page, so you are looking at 2 pages (one for the sheet, one for a drawing)

Pressure Indicator assembly Follow Instructions on board (Teacher master B) Squeeze and release the jar very carefully

Pressure Indicator assembly Students 1-3 at each table will get: 1. One rubber stopper and clear plastic tube 2. One glass bottle 3. One plastic jar Wait for assembly instructions

Pressure Indicators Assemble according to instructions Remember the system needs to be airtight Think of air particles while assembling When done with assembly: 1. Answer the questions in part 2 of the NB sheet 2. Make a diagram on the opposite page to answer question 5

9/30

Agenda Pressure in a Jar Results Discussion Gas in a Syringe online activity

Announcements SSR This Tuesday Bring a book Saturday School 10/3 Failing students must come for tutoring on Thursday

Do Now Notebook maintenance Finish Pressure in a Jar questions and drawings. Add color

Results Discussion Be prepared to answer these questions: Discuss these questions with your group: Is the volume of air inside the plastic jar greater, the same or less when you squeeze it? Think about the particles of air in the jar. Can they be pushed closer together? How does squeezing the jar push the particles together?

Results Discussion Be prepared to answer these questions: Discuss these questions with your group: Think about the syringe online activity, and the way the air particles moved when compressed. If you could see the air particles in the bottle, what would you see near the surface of the water? Why does the water in the tube go down when you push on the sides of the plastic jar?

Gas in a Syringe online activity Compare the syringe to the pressure indicator you built Watch the animation with the addition of the pressure gauge Notice what happens when the plunger is depressed

10/1

Agenda Density & Equilibrium definitions

Do Now Notebook Maintenance Color drawings Finish answers Update table of contents

Density Something else happened as we added pressure to the syringe and to the pressure-indicator system. Be prepared to answer the following questions: What happened to the volume of air in the jar surrounding the glass bottle? What happened to the number of particles in the jar? If the number of particles stayed the same, what happened to the total mass of the particles?

Gas in a Syringe image When particles get pushed closer together because of pressure, the particles get pushed into a smaller space. The air increases in density. Density refers to the mass of material in a given space. Notice: The syringe on the right has more dense air. The particles have been pushed closer together, so there are more particles in the same amount of space. More air pressure means more density. The air particles haven’t changed. The space between them is smaller, and the air becomes more dense (more particles per unit volume).

Equilibrium Think of air pressure as air particles hitting things. What will happen if a bottle full of compressed air is suddenly opened? When air moves from an area of high pressure to one of low pressure, it is returning to equilibruim. Think of the word equal when you think of equilibrium. If air is under high pressure in one area and has less space to move around in, if it is able to escape, air particles will flow from the area of high pressure to low pressure until the pressure or air density is equal.

10/2

Agenda Reading “What is Air Pressure?” Notebook sheet 5 “What is Air Pressure?”

Do Now Weather isn’t in a jar, like our experiment in class. Think about this question: When an area of higher pressure occurs in real life, how will it reach equilibrium?

Reading “What is Air Pressure?” p.29-33

“What is Air Pressure?” Notebook sheet 5 Answer the questions on NB sheet 5 after you read p.29-33