How do underwater volcanoes erupt?
 I think that great pressure builds up beneath the earth’s crust
under the ocean. The pressure breaks through and forms an
volcano under water.
 1. Mostly the lava under water volcanoes make lava
called pillow lava
 Under water volcanoes send a lot of ash in the air
 Sometimes you can find ruby’s and diamonds
 There are about 5,00o under water valcanoes
 I am going to put lava through tubes going thru dirt and
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making it erupt
Materials list: You are going to need
1. Tubes
2. Dirt
3. A box and pretend it is under water
4. You can add fish if you want
5. Spray foam installation or #6
6. Inexpensive caulk and caulking gun
7. Paper for tubes
8. Spray bottle of water
 Step1.Make paper tubes out of construction paper and pinch one
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end closed
Step2. Put some dirt in the bottom of the box on one side so it is
at an angle
Step3. Place the tubes and bend them so they angle up
Step4. Take the spray bottle and hardly spray the paper tubes so
they are kind of wet
Step5. Cover it up with the tubes with dirt but not the top of the
angled part
Step 6. Take the caulk gun or spray foam installation and shoot it
into the angled part or the tubes sticking out of the soil.
Step7. Observer the fluid (insulation or caulk) erupt through the
soil and illustrate the formation of an under water volcano.
 There are many variables in this experiment.
 1.the weight of the dirt
 2. the thickness of the caulk
 3.and the strengths of the paper tubes
 It was difficult to have a control because we could not
directly observe an under water volcano
 Foaming installation injected in construction paper
tubes and the tubes very quickly break. The foam
expands up through the dirt. The expanding foam
could resemble lava that has erupted under the ocean.
It expands quickly as we think lava meeting cold water
might expand quickly. The foam also looks a lot like
pillow lava that is produced by underwater volcanoes.
 Yes, the paper tubes and the dirt represents the earths
crust. The pressure in the tubes bursts through the
paper and dirt just like a volcanic eruption.
 Yes my hypothesis was correct. Yes for a future
experiment we would like to actually form an eruption
under water and use a material for lava will react with
water the way lava would. What is the consistency of
liquid lava? How fast does it harden underwater?