1. Sept. 10, 2015
You need: (If you are not ready, I’m noting) Clean paper / Pencil HW: Egg in Bottle Lab report Warm Up: Yesterday we put an egg into a bottle without damaging the egg or the bottle. It related to the candle lab. How?

2. Egg in a bottle (and out)?
Name: _____
Date
Egg in a bottle (and out)?
Question: How can I get a boiled egg (no shell) into a bottle without harm to the egg OR the bottle?
Hypothesis:
Write your hypothesis.
Conclusions:
1) What worked (and why)?
2) Using the information learned by getting the egg INTO the bottle, how can we get it out?
*SAFETY –

3. “Sucks” is not allowed

4. Egg in the bottle
The egg nor the bottle could be harmed.
1. Light a piece of paper and put it into the bottle.
2. Place the egg over the mouth of the jar…hold it in place.

5. Egg in the bottle
The egg nor the bottle could be harmed.
3. Notice a slight sputtering and the egg seems to want to jump OFF of the jar. Why?

6. Egg in the bottle
The egg nor the bottle could be harmed.
4. As the fire seems to go out, the egg is now pushed firmly onto the mouth of the jar – and will slide (usually slowly) into the jar. Why?

7. Egg in the bottle
What happened? 1. Originally, the air INSIDE the bottle is the SAME pressure as the air OUTSIDE the bottle.
Air pressure
SAME
Air pressure

8. Egg in the bottle
When we dropped in the fire, the air was heated…and expanded!
High pressure
Low pressure

9. Egg in the bottle
Then the fire burned up all of the Oxygen and left not-so-much air in the container. Less air means less “stuff” inside and lower pressure.
Low pressure
High pressure

10. Egg out of the bottle
How do we get the egg OUT of the bottle? Write down your answer – explain the science!
Low pressure
High pressure

11. How long will the candle burn?
21% Oxygen in all Jars – but that equals a smaller amount of oxygen in a small jar
Largest Jar = ____ sec
Medium Jar = ____ sec
Small Jar = ____ sec

12. DENSITY
PRESSURE
and

13. Size Doesn’t Matter!
Objects that are the same size could have very different masses!
All materials are made of small particles called molecules…

14. DENSITY LOW density HIGH density
DENSITY describes how closely packed the particles of an object are.
HIGH density
LOW density

15. Can you make a striped column?
Rubbing alcohol
Dish soap
Vegetable Oil
Water
Draw what you think your column will look like.

16. Draw out your column – with colors! Label each liquid.
Vegetable Oil
Dish soap
Water
Dish soap
Water
Vegetable Oil
Rubbing alcohol
Rubbing alcohol
Vegetable Oil
Dish soap
Water
Rubbing alcohol
What order is your column? Why?

17. It doesn’t crush you, though, because it is pushing on all sides.
How does this relate to air? We know that air has mass and takes up space.
Even though air molecules are spread far apart, the air in our atmosphere stretches up over 60 miles!
The air above your head actually weighs about as much as a school bus!
It doesn’t crush you, though, because it is pushing on all sides.

18. How does this relate to air?
This pushing of air is called AIR PRESSURE.
You felt PRESSURE when you were crammed into the tape square.
…………………………………………………………………………………………………………………………………………
Air at LOW DENSITY also has LOW PRESSURE
Air at HIGH DENSITY also has HIGH PRESSURE

19. How does this relate to air?
We know that air has mass…
Air molecules are spread very far apart compared to molecules in a solid, like metal.
Which means that air is also made of molecules.

20. TROPOSPHERE Thinnest Layer (0-12 km)
Average Temperature of 25°C (Temperature drops as you go higher)
All of Earth’s weather happens here.
Air here contains water & dust.
Most of the atmosphere’s air is here (this layer is very dense).

21. STRATOSPHERE 10-50 km above earth’s surface
There is almost no water or dust in this layer.
Contains the OZONE LAYER (which absorbs UV radiation from the sun)
Very cold, until the top of the layer, where it warms to 0°C.

22. MESOSPHERE 50-80 km above Earth’s surface.
Temperature plunges to -90°C (the coldest in the atmosphere)
Meteors burn up here while entering the atmosphere.

23. THERMOSPHERE Thickest layer (80-400 km above Earth’s surface).
Air is extremely thin. Atmospheric gases fade into outer space.
Temperature can spike to 1,800°C.
Ionosphere (lower portion) – contains ions or charged particles…allows radio waves to bounce off and auroras to occur.
Exosphere (outer layer)

24. Layers of the atmosphere
Cut out the layers of the atmosphere
Color the pictures that will match each layer.
Cut out the pictures to match to each layer.
Paste them onto your notes.

25. Air Pressure at Different Altitudes
Is air pressure greater at sea level or on top of a mountain?
Lower Air Pressure
Mountains
(High altitude)
Higher Air Pressure
Sea Level (Low altitude)

26. Mt. Mitchell, NC
Highest point east of the Mississippi
6684 ft. high

27. Mt. Everest, Highest point above sea level in the world
8850 meters high (29,035 ft)

28. Mt. Everest, Highest point above sea level in the world
8850 meters high (29,035 ft)

29. Exploring Air with Syringes
Today, you will investigate air with syringes – working with a table partner.
What happens to the air in the syringe when you push/pull on the plunger?
What if the end is covered?
*SAFETY – Be careful with the materials! Do not point either end of the syringe at another student.

30. Exploring Air with Syringes
Name: _____
Sept. 9, 2014
Exploring Air with Syringes
Question: What can we do to air in a syringe? What can the air do?
Observations:
Write 3 observations from your investigation.
Conclusions:
1) What can air do? (that a solid or liquid can’t do…)
2) Write down 1 more question...
*SAFETY – Be careful with the materials! Do not point either end of the syringe at another student.

31. Exploring Air with Syringes
Based on the investigation,
What can air do?
A few words you need to know…
COMPRESS – means to squeeze into a smaller space
DENSITY – how closely molecules are packed together
AIR PRESSURE – the force of air pushing on stuff
COMPRESS

32. Air Pressure in a Syringe
Which syringe has the air under more pressure?
Low Pressure
& Less Dense
High Pressure
& More Dense

33. Air Pressure in a Balloon
Is the air pressure inside a balloon greater than or less than the surrounding air?
Higher Pressure & More Dense
Lower Pressure & Less Dense