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The Wet and Dry Mystery The Wet and Dry Mystery

The Wet and Dry Mystery - PowerPoint Presentation

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Uploaded On 2015-09-20

The Wet and Dry Mystery - PPT Presentation

Dry Ice VS Ice The Project My question Out of ice and dry ice which one has less friction My hypothesis dry ice will have less friction because it is a solidified gas making it easier for it to glide whereas ice is a solid liquid which is heavier ID: 134816

dry ice wood friction ice dry friction wood gas results mass surface smooth surfaces won area stone inches slide grooves cushion granite

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Slide1
Slide2

The Wet and Dry Mystery

Dry Ice VS. Ice Slide3

The Project

My question: Out of ice and dry ice, which one has less friction?

My hypothesis: dry ice will have less friction because it is a solidified gas, making it easier for it to glide whereas ice is a solid liquid, which is heavier.Slide4

The Process

My experiment was to, using a device I built, push both ice and dry ice across two different surfaces multiple times to get

clear

results.

Also, I flicked some dry ice down the hallway to see what would happen.

All variables HAD to be covered, like making sure the pieces were the same mass and had the same surface area. However, results may not be 100%

precise.Slide5

Ice MassSlide6

Dry

I

ce MassSlide7

Ice On Smooth StoneSlide8

Dry Ice

On Smooth StoneSlide9

Ice on WoodSlide10

Dry Ice

on WoodSlide11

Hall slide (

D

ry Ice)Slide12

Results

I found that it was a tie between ice and dry ice, as seen in the videos, dry ice smoked ice on granite but was sourly defeated when it came to wood.

Although this is true, during dry ice’s win it went so far that it went of our testing surface, however during its downfall, it was beaten by only a few inches.

surface

Ice

Dry ice

Granite countertop

12

in.

> 36 in.

plywood

10 in.

3.5 in.Slide13

Theories

Dry ice won first for the obvious reason, a gas is less dense than a liquid, and density is a key variable of friction.

In the case of wood though, the gas went into the grooves of the wood, meaning the cushion of gas was gone and there was more friction. When the ice slid across the grooves, the melting ice created fillers for them and was able to slide a few inches more, but this still allowed friction to take its toll every time it hit a flat area.Slide14

Conclusion

At the end, on surfaces that are smooth enough to keep sublimating gas out, this enabled the cushion allowing dry ice to smoke ice however, credit should also be given to ice because it won under some circumstances.

This being said, my hypothesis

was partially

correct.