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Generally, its higher temperature. The temperature of a rising magma is generally higher than the temperature of its surrounding rocks. Because of its higher temperature, it is also lighter compared to the surrounding rocks (it has a lower density), so it rises.
Imagine a hot air balloon: it rises because the air inside the balloon is heated, heating the air lowers its density (makes it lighter). As long as the density of the air inside the balloon is lower than the density of the air outside the balloon, the balloon rises.
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∙ 13y ago
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What term refers to magma at the earths surface?
Magma once it reaches the earths surface is called lava.
What is the name for lava before it leaves the volcano?
its magma before it reaches earths surface. lava is when its at earths surface
Magma that reaches the earths surface?
Magma that reaches earth's surface is called lava.
What can erupt to bring a lava flow to earths surface?
magma
What is the melted rock magma called when it reaches the earths surface?
LAva
What term refers to magma at the earths surface?
Magma once it reaches the earths surface is called lava.
What is the magma when it reaches the earths surface?
Magma that reaches the Earth's surface is known as lava.
What is the name for lava before it leaves the volcano?
its magma before it reaches earths surface. lava is when its at earths surface
Magma that reaches the earths surface?
Magma that reaches earth's surface is called lava.
What is magma that flows out on to earths surface?
Lava.
What is the name for magma that has erupted?
Lava. Note: Magma cant erupt, volcanoes do. Magma is just the word for molten rock beneath the earths surface, lava is for molten rock above the earths surface.
Does a volcano form when magma reaches earths surface?
That is correct. When magma travels from the mantle to the crust and reaches the surface, that is a volcano.
Mountains formed by magma that reaches the Earths surface are?
Mountains formed by magma that reaches the Earth's surface are called volcanoes.
What is it called when magma hardens beneath the earths surface?
crust
What is a molten rock beneath earths surface called?
magma
What word identifies magma that reaches earths surface?
lava
What is the pocket of magma called under the earths surface?
An intrusion.
