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Copy of Do All Liquids Evaporate At The Same Rate?

Topic Explanation - Liquids will be placed at room temperature to determine if they will evaporate at the same rate.
by

Dahnae McDonald

on 26 June 2013

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Transcript of Copy of Do All Liquids Evaporate At The Same Rate?

Background Research
Source 2 – Winchester, James. The Wonders of Water. New York: G. P. Putman’s Sons, 1963. Printed.
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.
Nadeen Kingston & Dahnae McDonald
CLASS: 702
Ms. Dwyer
SCIENCE
Problem: Does the type of liquid affect the evaporation 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?
* 4 measuring cups
* rubbing alcohol
* water *microwave
* peroxide
* dish washing soap
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.
The alcohol, peroxide and water evaporate faster than the soap liquid, my hypothesis was correct. 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. The materials in some of the liquids made it easier for them to evaporate. There were no errors. The experiment could be improve by performing it for a longer amount of time. Further study could help show which would be the last liquid to evaporate.
Data
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