CRYOGENIC ROSES -CHEMISTRY Can Ice Preserve Once-living Things?

Transcription

CRYOGENIC ROSES -CHEMISTRY Can Ice Preserve Once-living Things?
Can Ice Preserve Once-living Things?
CRYOGENIC ROSES
-CHEMISTRY
Background Research
 Cryogenic means the science of producing and studying low-
temperature environments.
 Greek word “kryos” mean cold.
 Freezing roses which is once-living.
 Can ice preserve once-living things?
 Observing the characteristics of the frozen and not frozen rose.
 It will have a control group and a experimental group.
Bonnet, Robert L. and G. Daniel Keen. Earth Science: 49 Science Fair Projects. Tab Books: Blue Ridge Summit, PA. 1990
Introduction and Background
• Paragraph giving:
– The importance of this experiment is because back
during ice age, mammoths were able to be preserved.
What about plants?
– The purpose of this experiment is to determine
whether once living things can be perfectly preserved
– I predict that the roses can be preserved because
animals were able to be preserved as in what
scientists had discovered.
Experimental Design Diagram
Hypothesis:
Ice can preserve once-living things.
Independent Variable: Water
Levels of IV
Trials
1 cup
1cup
1 cup
1 cup
1
2
3
4
Dependent Variable: Once-living thing (rose)
Controlled Variables (constants): Temperature (room)
Materials and Equipment
• five rose buds
beginning to bloom
• Procedures:
1.
Fill the four plastic bowls with the amount of water
given.
2.
Observe the five rose buds and record any
differences in the fragrance, texture, appearance,
and color.
3.
Place one rose bud in each bowl of water and then
put them in the freezer, keeping one rose bud at
room temperature for a control. Observe the
control daily and record all observations.
•Four plastic bowls
•Measuring cup
•Water
•Paper and pen/pencil
•Camera
4. After one week, allow one rose bud to thaw and
observe, comparing it to the control and to the
observations made before freezing. Place the
thawed rose bud with the control.
5. Repeat this procedure the next week with another
frozen rose. Do this weekly until all roses have been
thawed and observed.
Data Table
Title: Experimental Group
Experimental
Group
1. colorcolor
2. fragrance
3. texture
4. appearance
Rose #1
Week 1
Rose #2
Week 2
Rose #3
Week 3
Rose #4
Week 4
Before: red
After: Some
areas darker
Before: Intense
After: Less
fragrance
Before: Clear
After: A little
wrinkles
Before: fresh
After: A little
dull
Before: red
After: Some
areas darker
Before: Intense
After: Less
fragrance
Before: Clear
After: A little
wrinkles
Before: fresh
After: A little
dull
Before: red
After: Some
areas darker
Before: Intense
After: Less
fragrance
Before: Clear
After: A little
wrinkles
Before: fresh
After: A little
dull
Before: red
After: Some
areas darker
Before: Intense
After: Less
fragrance
Before: Clear
After: A little
wrinkles
Before: fresh
After: A little
dull
Data Table
Title: Control Group
Control Group
Rose
Week 1
Week 2
Week 3
Week 4
1.
Color
Red
Dark red
Darker red
Completely dark
1.
fragrance
Intense
Less intensive
Changed
Changed
1.
texture
Clear
Less clear
Wrinkly
Shriveled
1.
appearance
Still fresh
Less fresh
Almost dry
Dry
Data Analysis
 The graph shows that the experimental group
has not changed its characteristics in any way.
 In the control group, the changes showed
rapidly in appearance, texture, fragrance and
color.
 Both graphs show many differences with
experimenting with the roses.
Experimental Group After Defrosting.
Experimental Group After Defrosting.
Control Group Picture.
Control Group Picture.
Conclusion
 My purpose on this experiment is to answer my

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

question about preserving living things.
I found that you can preserve once living things with
ice in a below 32 degrees area.
Can ice preserve once living things? Yes, yes it can.
The charts and the information that was provided
helped me have a positive outcome toward my
hypothesis.
You can go into more investigating if it can preserve
more than just a plant with this type of experiment.
Works Cited
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Stroh, Michael. "Life on Ice." Thefreelibrary.com. Farlex, 10 Jan. 2003. Web. 12
Nov. 2011.
<http://www.thefreelibrary.com/Life+on+ice%3A+extreme+cold+is+both+a+kill
er+and+lifesaver.+Learn+how...-a096195456>.
Bonnet, Robert L. and G. Daniel Keen. Earth Science: 49 Science Fair Projects. Tab
Books: Blue Ridge Summit, PA. 1990
Suchecki, Paul M.J. "How to Keep Flowers from Wilting | EHow.com." EHow |
How to Videos, Articles & More - Discover the Expert in You. | EHow.com. Deman
Media. Web. 12 Nov. 2011. <http://www.ehow.com/how_2227121_keep-flowerswilting.html>.
Fountain, Henry, and Anne Eisenburg."Putting Mortality on Ice." The New York
Times [New York] 14 July 2002. Print.
"Liquid Nitrogen." Amazingrust.com. International Chemical Supply, 05 Sept.
2008.
Web.<http://www.amazingrust.com/experiments/background_knowledge/LN2.
>.