guys,so when should we meet cos i got the data loger come on peeps i think we will soar and rule this project!!!

Okay, this is an outline of the table we need to do for our project.

Results :

	Bucket Of Cold water	Bucket Of Ice	Bucket of Ice and Salt	Bucket of Ice and Cold water	Refrigerator	Freezer

Starting!

Hi everyone!

Okay, we got the green light on our project! We got the whole 5 percent!

We should begin soon!

-Sabrina

example: credicts http://www.wikihow.com/Chill-a-Drink-Quickly

1. 1. Measure the temperature of the drink. This step is optional; once you open a can, this method won't be as effective. If this is your first time trying it, though, it will be interesting to record how drastically the temperature can change
2. 
   2. Fill a bowl (the thicker and/or more insulated the better) with water and add ice to it. Add as much ice to the water as you can, but not so much that it prevents the entire beverage container from being submerged into the water. A 50/50 mix of ice and water is a good rule of thumb.
3. 3
   
   
   Add table salt to the ice. A small handful should do. The salt will dissociate into it's constituent sodium and chloride ions. The water molecules, being polar, will orient themselves accordingly. This is work, and work requires energy which comes from thermal energy in the water, thus reducing the ambient temperature further.
4. 4
   
   Place your drinks in the ice water solution and rapidly stirthem all around. By stirring, you're using forced convection to speed the transfer of heat out of your drink and into the ice water solution.
5. 5
   
   
   Wait two minutes. Measure the temperature of one of the drinks - the temperature should have fallen dramatically in a very short time. If it needs more time chilling, stir the remaining drinks in the salted ice water for another minute or two.
6. 6
   
   Enjoy your cold drink. It should now be about the perfect temperature to quench your thirst.

Example: Credits to http://www.sciencebuddies.org/science-fair-projects/project_ideas/Phys_p057.shtml

Abstract

So you've just finished mowing the lawn on a hot summer day, and you'd like a cold, refreshing drink as a reward. You look in the fridge, and oops! it's empty. The sodas are still sitting in the cupboard, at room temperature. What's the fastest way to get that soda down to a cold, drinkable temperature with materials readily at hand?

Objective

The goal of this project is to determine the fastest method to cool a can of soda starting at room temperature.

Introduction

This project is all about heat transfer. How can you cool off a can of soda to take it from room temperature down to a nice, cold, drinkable temperature quickly, with materials that are readily available in your house?

Sure, you could put the soda in the refrigerator, but you probably know from experience that it's going to take awhile to get really cold that way. Maybe more time than you're willing to wait on a hot summer day. You could also try the freezer, since it's colder, it may cool faster than the fridge. What else could you try? How about putting the soda on ice, or immersing it in an ice-water bath? Which method do you think would be most efficient at cooling a soda?

In order to get the most out of this project, you will need to do some background research on heat and heat transfer. Here is a quick summary, so that you can be familiar with the terms you will encounter. All matter is made of atoms and molecules that are constantly in motion. Even in solids, the molecules are constantly vibrating. Heat is a measure of the average molecular motion of matter. Heat can be transferred from one piece of matter to another by four different methods:

• Conduction
• Convection
• Evaporation
• Radiation

Conduction is heat transfer by direct molecular interactions, without mass movement of matter. For example, when you pour hot water into a cup, the cup soon feels warm. The water molecules colliding with the inside surface of the cup transfer energy to the cup, warming it up.

Convection is heat transfer by mass movement. You've probably heard the saying that "hot air rises." This happens because it is less dense than colder air. As the hot air rises, it creates currents of air flow. These circulating currents serve to transfer heat, and are an example of convection.

Evaporation is another method of heat transfer. When molecules of a liquid vaporize, they escape from the liquid into the atmosphere. This transition requires energy, since a molecule in the vapor phase has more energy than a molecule in the liquid phase. Thus, as molecules evaporate from a liquid, they take away energy from the liquid, cooling it.

Radiation is the final way to transfer heat. For most objects you encounter every day, this would be infrared radiation: light beyond the visible spectrum. Incandescent objects—like light bulb filaments, molten metal, or the sun— radiate at visible wavelengths as well.

In both the freezer and the refrigerator, cold air is removing heat from the room-temperature soda can by convection. (There is also a small amount of heat loss via conduction, where the can is in direct contact with the shelf.) The molecules in a gas, such as air, are spread out over a much larger volume than molecules in a liquid. In other words, air (at standard temperature and pressure) is much less dense than water. If you immerse the can of soda in a cold liquid, then, you would expect that a much greater number of molecular interactions would result. Will the soda cool off faster as a result?

Terms, Concepts, and Questions to Start Background Research

To do this project, you should do research that enables you to understand the following terms and concepts:

• Kinetic theory of matter
• Heat
• Heat transfer
  • Conduction
  • Convection
  • Evaporation
  • Radiation

Questions

• How does the kinetic theory of matter relate to heat transfer?
• How does a refrigerator or freezer work to keep things cold?
• Which do you think would be more efficient for cooling: a mass of cold air, or a mass of cold water?

Bibliography

• These sites have information on heat and heat transfer:
  
  • Hand, J., date unknown. "Convection, Conduction, and Radiation," Mansfield Middle School, Storrs, CT [accessed August 16, 2007]http://www.mansfieldct.org/schools/mms/staff/hand/convcondrad.htm.
  • Hand, J., date unknown. "How Atoms and Molecules Are Affected by Heat," Mansfield Middle School, Storrs, CT [accessed August 16, 2007]http://www.mansfieldct.org/schools/mms/staff/hand/atomsheat.htm.
• It's always a good idea to understand your experimental apparatus. Since you'll be using a refrigerator/freezer for your experiment, you should know how they work:
  • HowStuffWorks, Inc., 2007. "How Does a Frost-Free Refrigerator Work?" HowStuffWorks.com [accessed August 16, 2007] http://home.howstuffworks.com/question144.htm.
  • CEC, 2006. "How Does a Refrigerator Work?" California Energy Commission [accessed August 16, 2007] http://www.energyquest.ca.gov/how_it_works/refrigerator.html.

Materials and Equipment

To do this experiment you will need the following materials and equipment:

• 12 cans of soda at room temperature
• Instant-read digital thermometer
• Two styrofoam coolers
• Ice cubes
• Water
• Clock or timer
• Plastic wrap

Experimental Procedure

1. Do your background research so that you are knowledgeable about the terms, concepts, and questions, above.
2. Prepare an ice-only bath by adding enough ice to a styrofoam cooler to completeley cover three cans of soda.
3. Prepare an ice-water bath by adding the same amount of ice to a second styrofoam cooler, then covering the ice with water.
4. Use the instant read thermometer to measure the starting temperatures of:
   • the freezer compartment,
   • the refrigerator,
   • the ice-only bath,
   • the ice-water bath, and
   • each room-temperature can of soda. You'll need to open the cans of soda to take the temperature of the liquid inside. To minimize evaporation, cover the opening with a wad of plastic wrap after taking the temperature.

   In each case, make sure that the temperature has stabilized before recording the result. For example, it may take a minute or two before the ice-water temperature reaches equilibrium when the water is first added to the ice.

5. Place three cans of soda in each of the cooling devices to be tested, i.e.:
   • The freezer compartment
   • The refrigerator
   • The ice-only bath
   • The ice-water bath
6. Note the starting time for each cooling device.
7. At regular intervals (e.g., every 5 minutes), quickly remove each set of cans from their cooling device and measure the temperature of the soda. Note the time and temperature reading, then quickly put the cans back in the cooling device. Tips:
   • Minimize the amount of time that the refrigerator and freezer doors are open.
   • It is a good idea to periodically re-check the temperatures of the cooling devices.
8. The experiment is complete when the temperature reading of the soda stabilizes.
9. For each cooling device, calculate the average temperature of the three soda cans for each time point.
10. Make a graph of the average temperature of the soda (y-axis) vs. elapsed time (in minutes) since the beginning of the experiment. Use a different symbol and color for each cooling device.
11. Which cooling method worked the fastest?

Variations

• You can lower the temperature of ice water by adding salt (see the Science Buddies project Chemistry of Ice-Cream Making: Lowering the Freezing Point of Water). Does adding salt to the ice water cool the soda faster?

• For more science project ideas in this area of science, see Physics Project Ideas.

Credits

Andrew Olson, Ph.D., Science Buddies

Sources

This project was based on an entry to the 2007 San Mateo County Science Fair (project authors names not shown).

Last edit date: 2007-10-12 13:30:00

The scientific method.

We will do our experiment using " The Scientific Method " ( learned in module 1 ):

Steps:

1. Make careful Observations or accurate measurements

2. Record observations or measurements / gather information.

3. Define the Problem

4. Suggest a Hypothesis

5. Design and carry out an experiment

6. Interpreting the results

7(a). If the results support the hypothesis, it becomes a Theory.

8(a).If the theory is tested a number of times and is still found to be true, the theory becomes a

Law of Science.

7(b). If results do not support the hypothesis, reject it.

8(b). Suggest a new hypothesis.

9(b). Go back to step 5 and repeat it.

Ways:

We will try these ways:

1. Put it in a bucket of ice.

2. Put it in bucket of cold water.

3. Put in a bucket of ice and water.

4. Put in a bucket of ice, water and salt.

As salt is a impurity.

Please suggest more. We can get ice and water from the Dinning Hall.

hey guys other than that we can still use cold water and and ice rite and of course what kind of drinks do you all wanna use??

ok this might be useful http://www.ehow.com/how_5321290_make-drinks-cooler-faster-better.html

Topic 2- can drink experiment

Hi group mates. Please refrain from posting nonsense on our blog. Please also try to post more relevant things related to our science project. And please answer Sabrina. i have already answered her on fb. As for khar yi, i will re-invite her to be an author of this blog as she has never posted anything before...