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 What is the answer?
A volcano is an opening in the earth’s crust through which lava, volcanic ash, and gases escape. Volcanic eruptions are partly driven by pressure from dissolved gas, much as escaping gases force the cork out of a bottle of champagne.
What is a volcano geography lesson?
A volcano is an opening in Earth’s crust that allows molten rock from beneath the crust to reach the surface. This molten rock is called magma when it is beneath the surface and lava when it erupts or flows from a volcano. Volcanoes form at the edges of Earth’s tectonic plates.
Why do volcanoes erupt answer key?
Volcanoes erupt when molten rock called magma rises to the surface. Runny magma erupts through openings or vents in the earth’s crust before flowing onto its surface as lava. If magma is thick, gas bubbles cannot easily escape and pressure builds up as the magma rises.
What is the five description of volcano?
A volcano is a mountain that opens downward to a pool of molten rock below the surface of the earth. In an eruption, gases and rock shoot up through the opening and spill over or fill the air with lava fragments. Eruptions can cause lava flows, hot ash flows, mudslides, avalanches, falling ash and floods.
What are the parts of volcano?
The main parts of a volcano include the magma chamber, conduits, vents, craters and slopes. There are three types of volcanoes: cinder cones, stratovolcanoes and shield volcanoes.
What are the benefits of living near a volcano?
Benefits of living by a volcano
- 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 cheaper electricity for locals.
What are the volcano parts?
What are the three main types of volcanoes?
Geologists generally group volcanoes into four main kinds–cinder cones, composite volcanoes, shield volcanoes, and lava domes.
What causes a volcano to form?
On land, volcanoes form when one tectonic plate moves under another. Usually a thin, heavy oceanic plate subducts, or moves under, a thicker continental plate. When enough magma builds up in the magma chamber, it forces its way up to the surface and erupts, often causing volcanic eruptions.
What are facts about volcanoes?
10 Interesting Facts About Volcanoes 1. There are Three Major Kinds of Volcanoes: 2. Volcanoes Erupt Because of Escaping Magma: 3. Volcanoes can be Active, Dormant or Extinct: 4. Volcanoes can Grow Quickly: 5. There are 20 Volcanoes Erupting Right Now: 6. Volcanoes are Dangerous: 7. Supervolcanoes are Really Dangerous:
What is inside a volcano?
Inside a volcano is a long tube leading up towards the top filled with lava. This is called a vent. The area in which the magma is held is called a magma reservoir. There are really only two parts to a volcano, the vent and magma reservoir.
How do earthquakes and volcanoes form?
Most earthquakes and volcanoes occur because of the movement of the plates, especially as plates interact at their edges or boundaries. At diverging plate boundaries, earthquakes occur as the plates pull away from each other. Volcanoes also form as magma rises upward from the underlying mantle along the gap between the two plates.
What is a volcanic eruption?
Jump to navigation Jump to search. Volcanic eruptions. A volcanic eruption occurs when hot materials from the Earth’s interior are thrown out of a volcano. Lava , rocks, dust, and gas compounds are some of these “ejecta”. Eruptions can come from side branches or from the top of the volcano.