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Do All Liquids Evaporate At The Same Rate?
Melissa Gatlinon 12 January 2013
Transcript of Do All Liquids Evaporate At The Same Rate?
What did you learn from this source? Molecules’ escaping from a liquid is the reason for evaporation. Evaporating liquids cool down. As water evaporates, molecules move quickly from its surface. Background Research Source 1 – Flanagan, Alice. Simple Science Water. Minneapolis: Compass Point Books, 2001, Print.
What did you learn from this source? Evaporation is part of the water cycle. Another word for evaporation is water vapor. During evaporation, liquids are changed to gases. Topic Explanation Liquids will be placed at room temperature to determine if they will evaporate at the same rate. Background Research Source 3 – Penman, HL. Natural Evaporation from Open water; Bare Soil and Grass, 1948. ftp://ftp.gps.caltech.edu/pub/avouac/.
What did you learn from this source? The evaporation rate depends on things like the humidity of the air. It also depends on the area of the air-water surface. It also depends on the temperature of the air. Background Research Source 4 – Saunders-Smith, Gail. Rain. Minneapolis: Pebble Books, 1998. Print.
What did you learn from this source? Evaporation can happen in oceans and lakes. Evaporation turns into vapors that are tiny drops of water. The drops are so small they float in the air. Background Research Source 5 – Mittler, Ted. How Fast Does Water Evaporate?, 2011. <www.ehow.com/>
What did you learn from this source? Evaporation depends on many factors. Some of the factors are temperature, relative humility, surface area and the purity of the water. Brennan Gatlin
Mr. John Roberts Do All Liquids Evaporate At The Same Rate? Purpose What is the purpose of your experiment? To discover if all liquids evaporate at the same rate.
What question are you trying to answer by performing this experiment? What happens during evaporation? Where does evaporated liquid go? How long does it take for a liquid to evaporate?
How will the knowledge from your experiment be helpful to other scientists or your community? Scientist could use this experiment to help decide which liquids would have a lower evaporation rate in desert or arid environments. Scientist could use this experiment in the food production industry to help develop products with longer shelf life. Hypothesis What do you think is going to be the outcome of your experiment? If the factors of the liquids are the same, then I think the liquids will not evaporate at the same rate because of the different molecules in each liquid. My prediction is that the alcohol will evaporate the quickest and the orange juice will take the longest time to evaporate. Experimental Design What are the variables in your experiment:
Constants- All of the liquids will be measured equally at four ounces. They will also receive the same amount of sunlight by being placed in the same window.
Manipulated or Dependent Variable- This experiment is dependent on the daily amount of sunlight.
Independent Variables -After seven days, if there has been no change the liquids will be moved under a heat lamp. Materials What did you use to complete the experiment?
Four ounces of water
Four ounces of orange juice
Four ounces of alcohol
Four ounces of nail polish remover
Four measuring cups
Pencil and paper for notes
Chart to record data
Camera Procedure What are the steps you took to complete the experiment?
Pour four ounces of each of the four liquids into separate measuring cups.
Set the four measuring cups in front of the same window.
Monitor the levels of each liquid for seven days.
Record your findings each day on a chart. Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7 Evidence Bibliography Source 1 – Flanagan, Alice. Simple Science Water. Minneapolis: Compass Point Books, 2001, Print.
Source 2 – Winchester, James. The Wonders of Water. New York: G. P. Putman’s Sons, 1963. Printed
Source 3 – Penman, HL. Natural Evaporation from Open water; Bare Soil and Grass, 1948 ftp://ftp.gps.caltech.edu/pub/avouac/.
Source 4 – Saunders-Smith, Gail. Rain. Minneapolis: Pebble Books, 1998. Print.
Source 5 – Mittler, Ted. How Fast Does Water Evaporate?, 2011. <www.ehow.com/> Conclusions Results What happened as a result of your experiment? The man-made liquids evaporated faster than the natural liquids.
Explain the findings of your experiment. Alcohol evaporates the most, while orange juice evaporates the least.
How does this relate to your purpose? They are both meant to help explain the evaporation process of liquids. What were your major results? The alcohol and fingernail polish remover evaporate faster than water and orange juice.
Did the results support the hypothesis? Yes, they supported the hypothesis.
How did your results compare to the information you read for your background research? The books said that water would take a long time to evaporate and the experiment support that statement. The water did take a long time to evaporate.
What possible explanations could you give for your results? The materials in some of the liquids made it easier for them to evaporate.
Were there any errors that may have impacted your results? No, there were no errors.
How would you improve on this experiment? The experiment could be improve by performing it for a longer amount of time.
What further study could be done from this experiment? Further study could help show which would be the last liquid to evaporate. Data