Question

lets say that the paper represents the earths crust what do you think is represented by the water in the test tube

Answer 1

Maybe it is magma or lava

Answer 2

Hope this help you mate...
The paper represents the earth's crust. And the water in the test tube represents the lava or magma inside the volcano. Through this experiment, we will know the movement of an eruption or the magma and lava itself.
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