What are the description of a volcano?

A volcano is defined as an opening in the Earth’s crust through which lava, ash, and gases erupt. The term also includes the cone-shaped landform built by repeated eruptions over time.

What words describe a volcano?

Volcanos – thesaurus

• active. adjective. an active volcano is likely to erupt (=explode and pour out fire) at any time. …
• crater. noun. the round hole at the top of a volcano.
• dormant. adjective. …
• erupt. verb. …
• extinct. adjective. …
• inactive. adjective. …
• lava. noun. …
• lava. noun.

What are the five features or descriptions of a volcano?

What are the characteristics and forms of volcanoes?

• Acidic lava, which is very viscous (sticky).
• Steep sides as the lava doesn’t flow very far before it solidifies.
• Alternate layers of ash and lava. For this reason, they’re also known as stratovolcanoes . …
• Violent eruptions.
• Longer periods between eruptions.

What are the parts of volcanoes with description?

Vent – An opening in Earth’s surface through which volcanic materials escape. Flank – The side of a volcano. Lava – Molten rock that erupts from a volcano that solidifies as it cools. Crater – Mouth of a volcano – surrounds a volcanic vent.

How would you describe a volcanic eruption?

Definition: A volcanic eruption occurs when magma is released from a volcano. Volcanic eruptions can be quite calm and effusive, or they can be explosive. Effusive eruptions produce lava flows, while explosive eruptions produce ash and pyroclastic density currents.

How do you describe a volcanic eruption?

A volcanic eruption is when lava and gas are released from a volcano—sometimes explosively. The most dangerous type of eruption is called a ‘glowing avalanche’ which is when freshly erupted magma flows down the sides of a volcano. They can travel quickly and reach temperatures of up to 1,200 degrees Fahrenheit.

What is a volcano for kids?

A volcano is a mountain or hill with an opening. When a volcano erupts, magma is pushed up through the opening with great force. When magma reaches the Earth’s surface, it is called lava. Lava can be as hot as 2,200°F (1,204°C). Some volcanic eruptions are explosive.

What is a volcano Kid definition?

A volcano is a landform (usually a mountain) where molten rock erupts through the surface of the planet. In simple terms a volcano is a mountain that opens downward to a pool of molten rock (magma) below the surface of the earth. It is a hole in the Earth from which molten rock and gas erupt.

What are volcanoes Class 7?

A volcano is a vent from which a combination of melted rock, solid rock debris and gas erupts. It has a reservoir of molten material below the surface (magma chamber) called magma, and when this magma rises to the surface, it is called lava.

Why are volcanoes called volcanoes?

The name volcano comes from Vulcan, the Roman god of fire! A volcano is formed when hot molten rock, ash and gases escape from an opening in the Earth’s surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here.

What does volcano look like?

Quote from video:This molten rock or magma is lighter than the surrounding solid rock layer. So it rises through the mantle. The magma then escapes through vents in the earth's crust causing volcanic eruptions.

What volcanoes sound like?

Loud explosions, bubbles bursting, rumbling, hissing, and roaring like a jet engine describe some of the sounds heard from volcanoes around the world. Stories of sounds from historical eruptions tell of loud booms and explosions from volcanoes heard thousands of kilometers away.

How would you describe a volcano What do you think is inside it how are they different from one another?

Inside an active volcano is a chamber in which molten rock, called magma, collects. Pressure builds up inside the magma chamber, causing the magma to move through channels in the rock and escape onto the planet’s surface. Once it flows onto the surface the magma is known as lava.

What are 10 facts about volcanoes?

Top 10 Facts About Volcanoes

• Volcanoes are openings of the Earth’s surface. …
• The word volcano comes from the word ‘vulcan’. …
• Volcanoes can be active, dormant or extinct. …
• The liquid inside the volcano is called magma. …
• Lava is the liquid that is expelled from the volcano. …
• Lava is very, very hot!

What are 3 good things about volcanoes?

Volcanoes can provide people with many benefits such as:

• volcanic rock and ash provide fertile land which results in a higher crop yield for farmers.
• tourists are attracted to the volcano, which increases money to the local economy.
• geothermal energy can be harnessed, which provides free electricity for locals.

What are 3 interesting facts about volcanoes?

An erupting volcano can trigger tsunamis, flash floods, earthquakes, mudflows and rockfalls. More than 80% of the earth’s surface is volcanic in origin. The sea floor and some mountains were formed by countless volcanic eruptions. Gaseous emissions from volcano formed the earth’s atmosphere.

What are 5 interesting facts about active volcanoes?

10 Interesting Facts About Volcanoes

• There are Three Major Kinds of Volcanoes: …
• Volcanoes Erupt Because of Escaping Magma: …
• Volcanoes can be Active, Dormant or Extinct: …
• Volcanoes can Grow Quickly: …
• There are 20 Volcanoes Erupting Right Now: …
• Volcanoes are Dangerous: …
• Supervolcanoes are Really Dangerous:

How much lava is in a volcano?

Using the preliminary map, we can calculate a rough estimate of the total volume of lava erupted and added to the land surface—about 0.8 cubic kilometers (over a million cubic yards).

Why is lava so hot?

Lava is hot for two primary reasons: Pressure and radiogenic heating make it very hot deep in the Earth (about 100 km down) where rocks melt to make magma. The rock around the magma is a good insulator so the magma doesn’t lose much heat on the way to the surface.

What is cold lava?

Cold lava flows, also known as lahars, are mud flows consisting of volcanic ash, rocks and other debris. The flows can travel quickly and effectively bulldoze or bury anything in their paths.

Does obsidian exist?

obsidian, igneous rock occurring as a natural glass formed by the rapid cooling of viscous lava from volcanoes. Obsidian is extremely rich in silica (about 65 to 80 percent), is low in water, and has a chemical composition similar to rhyolite. Obsidian has a glassy lustre and is slightly harder than window glass.

Can you make obsidian?

There is no crafting recipe for obsidian. Instead, any time flowing water hits a stationary lava “source” block, the lava turns into obsidian. You can find stationary lava in the following places: Lava is easiest to find as “lava falls” in caves and ravines.

How do you cut rainbow obsidian?

Quote from video:That's the direction that they're going in you can is pretty prominent right here but here on this other. Side. It's not as prominent. But you can still faintly see some lines.