Which type of volcano can be expected to erupt explosively?
Composite volcanoes
Composite volcanoes are some of the most dangerous volcanoes on the planet. They tend to occur along oceanic-to-oceanic or oceanic-to-continental boundaries because of subduction zones. They tend to be made of felsic to intermediate rock and the viscosity of the lava means that eruptions tend to be explosive.
What volcanic products cover 70% of Earth’s surface?
The presence of pillow lava is evidence of what volcanic circumstance? These volcanic products cover 70% of Earth’s surface.
Which explosive volcano erupted in 1815 resulting in temperatures so cool that the following year was called the year without a summer quizlet?
The eruption of Mt. Tambora, Indonesia, in 1815: resulted in extremely low temperatures in the northern hemisphere during 1816. produced “the year without a summer.”
Why would a volcano erupt explosively?
A volcano’s explosiveness depends on the composition of the magma (molten rock) and how readily gas can escape from it. As magma rises and pressure is released, gas bubbles (mainly of water vapor and carbon dioxide) form and expand rapidly, causing explosions.
Did volcanoes create oceans?
Volcanic eruptions spewed gases from Earth’s interior to the atmosphere, a process called outgassing that continues today. Most of the gas was carbon dioxide and water vapor. The water vapor condensed to form part of Earth’s oceans as the surface cooled.
Did volcanoes create the Earth?
More than 80 percent of the Earth’s surface–above and below sea level–is of volcanic origin. Gaseous emissions from volcanic vents over hundreds of millions of years formed the Earth’s earliest oceans and atmosphere, which supplied the ingredients vital to evolve and sustain life.
What color was the ocean before oxygen?
If you assume that prehistoric oceans were blue just like they are today, you’d be wrong. Scientists discovered ancient oceans were actually a rosy hue, making pink the world’s oldest-known color.
What came first Earth or water?
Mineralogical evidence from zircons has shown that liquid water and an atmosphere must have existed 4.404 ± 0.008 billion years ago, very soon after the formation of Earth.
Do any planets have volcanoes?
Click for more detail. So far, we know volcanoes are found on Mercury, Venus, Earth, the Moon, Mars, and Jupiter’s moon, Io. Right now, active volcanoes are only found on two of these bodies: Earth and Io. However, volcanoes could be erupting on Venus or Jupiter’s moon, Europa.