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 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 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?