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Learning objective:
Students will be able to understand why volcanoes happen
Students will be able to undertsand their importance
students will be able to connext it to plate tectonics
Today we will..
Learn all about volcanoes and the importance of them
all Lava is super hot, but the hotter the lava the more runny and quicker the flow is
quick flowing lava makes for short, wide volcanoes
stickier lava makes taller volcanoes and more explosive reactions
after the volcanic eruption, you can see the land covered with ash and no visible life around the volcano
how to make a volcano! fun experiment to show how a volcano looks like/works and can connect to both the videos we watched in class and to the scientific method
OVERVIEW - Pressure builds up inside a volcano as gas bubbles form in magma. Magma is hot liquid rock beneath the surface of the Earth. Gas bubbles in the volcano need to escape. So the volcano erupts. A volcanic eruption works the same way.
ring of fire
ring of fire
About 75% of the Earth’s volcanoes are located in a region called the Ring of Fire. This 25,000-mile “ring’ is located around the Pacific Ocean. It runs from the southern tip of South America and up the west coast of North America. It continues across the Bering Strait and then south through Japan to New Zealand.
The ring sits along the outline of several tectonic plates. Tectonic plates are the large puzzle pieces that make up the Earth’s crust. The crust is Earth’s outer layer. Most volcanoes form at the edges of tectonic plates. These huge plates are constantly shifting. Sometimes, the plates pull apart or slide into each other. When this happens, magma rises to fill in the space. Strong pressure and intense heat force the magma upward. It squeezes upward like toothpaste through a tube.
why volcanoes benefit us
why volcanoes benefit us
Ash from volcanoes adds helpful minerals to soil. This helps plants grow strong. Healthy plants produce oxygen for humans and animals to breathe.
Volcanoes also remove heat from the Earth’s interior. This helps keep our planet cool.
Scientists are turning to volcanoes to help power cities. Researchers are exploring geothermal energy. It involves tapping into the heat beneath the Earth’s surface to generate electricity.
volcanoes can also create land -(all of the land in the Hawaiian Islands was created this way)
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