1.The mass of an object is 30 grams. The volume of an object is 5 cm 3. What is the object’s density? 2.If you aren’t wearing a backpack, why do your shoulders.

1. The mass of an object is 30 grams. The volume of an object is 5 cm3. What is the object’s density?

2. If you aren’t wearing a backpack, why do your shoulders still have pressure on them?

3. Why won’t air pressure crush us?

Lesson Essential Question:What are the effects of each property of air?

BA

2

Go over bellringerTake notes on barometersBuild a mercury barometerTake notes on altitude, air pressure,

and density.

3

What tool is used to measure air pressure?

• BAROMETER!!!!!• 2 types:

• Mercury• Aneroid

4

Mercury Barometer: instrument that measures air pressure using liquid mercury.

Barometers

5

Draw a line on the glass tube to show where the level of mercury would go if AIR PRESSURE FELL.

Draw a line on the glass tube to show where the level of mercury would go if AIR PRESSURE ROSE.

6

Aneroid Barometer: instrument that measures air pressure without using a liquid.

Barometers

9

Altitude The distance above sea level.

10

Altitude Affects Air Pressure

–Imagine a stack of books, which book has more pressure on it, the top or bottom one?

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Altitude Affects Air Pressure

–Air at sea level is like the bottom book, it has high pressure.

– Air near the top of the atmosphere is like the top book, the air has less weight pressing on it and has a lower air pressure.

12

Air pressure decreases as altitude increases.

13

14

Altitude and Air Density: The density of air decreases as altitude increases.

Altitude Affects Density

Friday, April 21, 2023

Complete the “Properties of

Air” homework.

17

1. 3 minutes – with table partner

2. Using the word wall to help remind you of the vocabulary, draw a picture/doodle of one vocab word, and attempt to have your partner guess what you are doodling.

FAIR

PIZZA FLOOD

BLUE SCIENCE PUPPY

Aneroid Barometer

Density Altitude

Atmosphere Oxygen Air Pressure

Mercury Barometer

Mass Barometer

Weather Nitrogen Pressure