Download presentation

Presentation is loading. Please wait.

1
Cartesian Divers!

2
**List 5 facts or observations!**

Cartesian Divers! How do they work? List 5 facts or observations! Sketch a diagram

3
**When is it easier to make the divers sink?**

When the bottle has very little air in it. When the bottle is half-full of air. A B

4
**Can you change the density of water by pushing on it?**

Is Water Compressible? Can you change the density of water by pushing on it?

5
**Can you change the density of air by pushing on it?**

Is Air Compressible? Can you change the density of air by pushing on it?

6
**No. Only air is compressible. The density of air can change.**

Is Water Compressible? No. Only air is compressible. The density of air can change.

7
**Using density, explain why the diver floats.**

Water’s density = 1 g/cm3. The diver’s density is less than 1 g/cm3. 0.5 g/cm3 1 g/cm3

8
Density = = = 0.5 g/cm3 10 g 20 cm3 As compared to water, 0.5 g/cm3 is less dense than water. It floats.

9
**What changes when you squeeze the bottle? (Don’t say color.)**

Volume Changes.

10
**Volume Changes due to increased pressure.**

11
**Density = Mass/Volume Mass = 10 g Volume = 20 cm3 Volume = 5 cm3**

Density = 0.5 g/cm3 Density = 2 g/cm3

12
When volume decreases, Density… 2 g/cm3 Increases!

13
**Is the mass of the diver changed at all?**

No! Mass does not change. Volume decreases and density increases. 1 g/cm3 2 g/cm3

14
**Using density, explain why the diver sinks.**

Water’s density = 1 g/cm3. The diver’s density is greater than 1 g/cm3. 1 g/cm3 2 g/cm3

15
**Which diver will sink first?**

Predict Which diver will sink first? A B

16
**Which diver will rise first?**

Predict Which diver will rise first? A B

18
Review Mass Volume Density =

19
**1. Why does a cube of ice float in water?**

Review 1. Why does a cube of ice float in water?

20
Water versus Ice Water

21
Question 1 Three cubes have the same volume, but very different densities. Which cube has the greatest density? 2 g 10 g 20 g

22
Question 2 Three cylinders have the same volume, but very different densities. Which cylinder will displace the most water when submerged? Or will each cylinder displace the same volume of water? Same 8 g 12 g 32 g

23
Review Which is denser? Both boxes have the same volume.

24
**What is the density of the ship?**

0.9 g/cm3

25
**Which one is more likely to float in H2O?**

Review Which one is more likely to float in H2O? Both boxes have the same volume.

Similar presentations

OK

Forces In Fluids Chapter 3 Section 2 - Floating and Sinking

Forces In Fluids Chapter 3 Section 2 - Floating and Sinking

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on astronomy and astrophysics encyclopedia Download ppt on sets Ppt on nature and humans Ppt on stress management for students Ppt on windows 8 operating system download Ppt on breast cancer Ppt on power system stability using facts Download ppt on evaporation Ppt on circles for class 9 free download Introduction to map reading ppt on ipad