“Stalactites and stalagmites."
Slide 1
(click!) We represent our research work
(click!) on “Stalactites and stalagmites."
(click!) (click!) (click!) (click!)
Slide 2
(click!) What are stalactites and stalagmites?
(click!) Can we grow this «miracle" of nature
(click!) at home?
Slide 3
(click!) Stalactites and Stalagmites are
(click!) those impressive pillars
(click!) you see growing
(click!) in caves.
Slide 4
(click!) A stalactite from the Greek stalasso,
(click!) "to drip", meaning "that which drips" is
(click!) a type of formation that hangs from
(click!) the ceiling of caves, hot springs, bridges and mines.
Slide 5
(click!) A stalactite is a type of formation
(click!) that hangs from the ceiling of caves, hot springs, or bridges and mines. Any material
which is soluble may form a stalactite.
Slide 6
(click!) A stalagmite is a type of rock formation
(click!) that rises from the floor of a cave due to the accumulation of material deposited on the
floor from ceiling drippings.
Slide 7
(click!) The largest known stalagmite in the world exceeds
(click!) 70 metres (230 ft) in height and is located in Vietnam.
I, the second ruler of the Sassanid Empire. The statue, carved
Slide 8
(click!) In south Iran there is the 3rdcentury
(click!) colossal statue of Shapur
from one stalagmite,
(click!) is nearly 7 m (23 ft) high.
Slide 9
The White Chamber in the Jeita
limestone stalactite which is accessible to visitors and is claimed to be the longest stalactite in
the world.
Grotto's upper cavern in Lebanon contains an 8.2 m (27 ft) Slide 10
(click!) Stalactites and stalagmites can be found in caves. Rainwater seeps through the crack in
the rocks and dissolves the limestone that is present there.
(click!) When this water flows along any surface, it slowly deposits the limestone and forms
calcite.
(click!) To get big stalactites or stalagmites it can take ages, for they grow only a few
centimeters every century.
(click!) However, it is possible to replicate this process and also the choice of chemicals can
speed up the process
Slide 11
(click!) So, the research topic is “STALACTITE MADE AT HOME”
The purpose of our work is to prove that one can grow stalactites at home.
(click!) Hypothesis:
(click!) 1. The stalactite will grow at home.
(click!) 2. The growth rate of a stalagmite in home conditions will be faster than in vivo caves.
Tasks:
1. To read some sources and information from the Internet, and understand under what
conditions, how and from what stalactites grow.
2. To carry on an experiment
3. To analyze the results.
Slide 12
(click!) The matter of the experiment is as follows: we can grow a stalactite out of baking soda at
home.
(click!) We began the experiment on growing a stalactite
(click!) on April 6, 2015.
(click!) We controlled the process and had a "photo shoot" of our stalactite regularly.
(click!) At the end of the experiment we measured the size and observed the shape of the
stalactite.
Slide 13
(click!) Kitchen chemistry is fun for science projects and learning. Here's how to grow your own
crystals and cave formations.
For making Stalactites & Stalagmites
(click!) we took 2 glasses,
(click!) 1 saucer,
(click!) 1 spoon,
(click!) 2 nails,
(click!) hot tap water,
(click!) a piece of yarn about 25 cm long and
(click!) some baking soda. (click!)
Slide 14
(click!) First we poured hot tap water into the glasses and
(click!) put the saucer between them.
(click!) Then we tied 1 end of our yarn around the nail.
(click!) The same we did with the other end of the yarn.
Slide 15
(click!) After that we put the ends of the yarn with the nails into the glasses.
(click!) We put the glasses so that the yarn was 5 cm above the saucer.
Slide 16
(click!) Then we put the baking soda into glasses and stirred it.
(click!) One pair of glasses contained the baking soda mixture
(click!) We added blue food colouring to the other mixture, hoping to get blue crystals.
(click!) The third pair of glasses contained not only the baking soda but also some salt.
(click!) Finally we put all the things to a warm place in our classroom and started to wait for the
results.
Slide 17
(click!) At first, the baking soda combination respond quickly.
(click!) As the day progressed, the rope became wet
(click!) and solution began dripping onto the plate between the glasses.
(click!) However, we were thrilled to find one morning that the process of a stalactite and
stalagmite forming had begun! It was working!!!
Slide 18
(click!) What's going On? Stalactites and stalagmites are formations that occur in underground
caves. They are made from minerals dissolved in rainwater that drip slowly from the walls and
roofs of caves.
(click!) The water evaporates as it drips. The dissolved minerals stay behind and develop into
the structures.
(click!) Stalactites hang down from the cave ceiling and stalagmites rise from the cave floor.
(click!) The same process is happening with our baking soda stalactites and stalagmites
Slide 19
(click!) On the second day we saw nothing , but we hoped to see something later.
Slide 20
(click!) On the third day we saw, that the rope became white. It was a good sign!
Slide 21 (click!) On the fourth day we noticed the first stalactites, (click!) they began to sprout the rope !
It was fantastic!
Slide 22
FIFTH DAY
(click!) On the fifth day
(click!) the stalactites crashed,
(click!) but were able to take photos!
Slide 23
(click!) THE SIXTH DAY
(click!) We added some more water and our
(click!) stalactites started growing again!
Slide 24
(click!) THE SEVENTH DAY.
(click!) It was fantastic!
(click!) The stalactite was like a Santa Claus's beard.
Slide 25
(click!) The grown stalactite is close to the salt stalactites;
(click!) its color is whitish;
(click!) when you touch it it’s hard and brittle.
Slide 26
(click!) The largest stalactite was approximately 12 mm long.
Slide 27
(click!) Our stalactite grew 7 days (click!) (click!) (click!) (click!) (click!) (click!) (click!)
Slide 28
(click!) We left the experiment there for many days, watching to see if the formations would
grow further.
(click!) They eventually stopped but we were thrilled with the results.
(click!) Several days later, the stalactite actually joined the (very small) stalagmite in the bowl.
(click!) However, as you see, the stalactite didn’t change its colour to blue.
Slide 29
(click!) Conclusion:
(click!) According to the results of the experiment we can conclude that hypotheses # 1 and # 2
are true: the stalactite grew at home, and it grew much faster than in natural conditions of the
caves.
Slide 30
(click!) During our research work, we learned a lot of new and very interesting facts about the
mysterious world of caves.
(click!) We learned how to grow stalactites and stalagmites, how to make salt solution, how to
research properly. (click!) It was a fantastic experiment! We got a great experience! We suggest you to try to do
the same work, as we did.
Список используемых источников:
Давид Э. Портнер. Пещеры. [Текст]: энциклопедия/ Давид Э. Портнер. М: Слово/Slovo,
1997.
Дублянский В.Н. Занимательная спелеология [Текст]: / Дублянский В.Н. Рожденные во
тьме. – У: Урал LTD, 2000 глава 9. – Режим доступа:
http://www.onixtour.com.ua/books/speleo/part09.htm, свободный.
Информация о сталактитах. – Режим доступа: http://home
edu.ru/user/f/00000608/Projects/Prokofev/Prokofev007.htm, свободный.
Энциклопедия для детей. // Геология. [Текст]:/ Энциклопедия – М: АВАНТА+, 1995.
«Большая книга экспериментов для школьников»/под редакцией Антонеллы Мейяни; пер.
с ит. Э. И. Мотылёвой. М.: ЗАО «РОСМЭНПРЕСС», 2008.
Яковишин Л. А.«Забавная химия» (практическое руководство) Харьков: издво «Ранок»,
2009
Материал из интернета.
Выращивание сталактитов и сталагмитов в домашних условиях
Выращивание сталактитов и сталагмитов в домашних условиях
Выращивание сталактитов и сталагмитов в домашних условиях
Выращивание сталактитов и сталагмитов в домашних условиях
Выращивание сталактитов и сталагмитов в домашних условиях
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