it is called a caldera a caldera is formed when a volcano erupts and it it such a big eruption that the volcano has no magma left in its chamber and since there is nothing left to support it, it caved in on itself.
The large circular depression at the top of a volcano that forms when the roof of the magma chamber collapses is called a caldera. Calderas can be huge in size and are formed during explosive volcanic eruptions or when the magma chamber empties and the summit collapses into the void left behind.
When a large star dies, it becomes a black hole because it is no longer hot enough to support itself against gravity
It is an acidic magma and has a huge caldera.
A crater, caldera. Yellowstone National Park is one big caldera from at least three really big ones. (I've not been there since 1970, but the next one is really going to be a big one...again.)
Its called a Caldera
A caldera
The large circular depression at the top of a volcano that forms when the roof of the magma chamber collapses is called a caldera. Calderas can be huge in size and are formed during explosive volcanic eruptions or when the magma chamber empties and the summit collapses into the void left behind.
Maybe the huge hole in the top? You know..the bit where the red hot lava comes out...
Supernovas occur when a massive star runs out of fuel and collapses under its own gravity, causing a powerful explosion that releases a huge amount of energy and creates new elements.
There is a huge room behind the hole where all the stoners go, and smoke weed. The hole is to let the smoke out and the oxygen in so that they don't suffocate in there.
It is Olympus Mons.
crater
the earthquakes special feature is that the land is splitting and a huge crack comes and splits the land. the volcanoes special feature is that the lava comes from the core and comes out of the hole of the volcano.
If, however, you mean erupt rather than explode then it's something like: Magma beneath the volcano comes under very high pressure, which forces it out the volcano, normally through the huge gaping hole at the top. However, very high pressure sometimes means that this hole is not enough, and magma (lava when outside the volcano) will burst out the sides of the volcano, such as the eruption at St. Helens. I don't know much about science however, I don't know why or how the magma comes under pressure in the first place.
It trickles slowly down the volcano and then turns into solid and becomes part of the volcano. That's why volcanos are so HUGE!!
When a large star dies, it becomes a black hole because it is no longer hot enough to support itself against gravity
krakatoa was a huge volcano, about 255 m in diameter.