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2021-05-16

How does lava differ from magma?

How does lava differ from magma?

Scientists use the term magma for molten rock that is underground and lava for molten rock that breaks through the Earth’s surface.

Why do different types of liquid magma lava differ and why?

When geologists refer to magma, they’re talking about molten rock that’s still trapped underground. If this molten rock makes it to the surface and keeps flowing like a liquid, it’s called lava. Magmas vary in their chemical composition, which gives them—and the volcanoes that contain them—different properties.

Why are there different types of lava?

And so, there are several different types of lava. The type of lava coming out of a volcano depends on its mineral content. Some lava is very thin, and can flow out of a volcano in great rivers that go for dozens of kilometers. Other lava is very thick, and only flows for a short distance before cooling and hardening.

How hot is magma compared to lava?

Kilauea releases mafic magma, and the temperature at eruption is about 2,140 degrees Fahrenheit. By comparison, Mount St. Helens spewed cooler lava, about 1,472 degrees Fahrenheit.

What’s hotter sun or lava?

Lava is indeed very hot, reaching temperatures of 2,200° F or more. But even lava can’t hold a candle to the sun! At its surface (called the “photosphere”), the sun’s temperature is a whopping 10,000° F! That’s about five times hotter than the hottest lava on Earth.

What happens if you jump in lava?

You might burst into flames and burn when you hit the lava/magma’s surface (depending on the type, lava’s temperature ranges from approximately 1,200 to 2,200 degrees). You might also burn before you hit the lava/magma due to the radiant heat.

Has anyone ever jumped into lava?

Despite their ubiquity all over Hawaii’s Big Island, it’s rare for someone to actually fall into a lava tube, experts have said. But it can happen. And on Monday, police said it happened to an elderly man — in his own backyard. He was transported to the hospital, where he was pronounced dead, police said.

What is the coldest a human can survive?

At 70 degrees F (21 C), you experience “profound,” deadly hypothermia. The coldest recorded body temperature a person has ever survived is 56.7 degrees F (13.2 degrees C), according to Atlas Obscura.