This week in Year 5 we have been writing explanation texts. We focused on using causal connectives to explain how and why volcanoes occur. Below is Alfie's text:
What is a volcano?
Volcanoes (such as Damavand, Fuji and Paricutin) are unique types of mountains that all have a conduit
that leads into a magma (lava when it’s underground) chamber. Underneath the
Earth’s crust lies the mantle, a sea of molten (melted) rock, which is the
result after the core melts the rock in 7500 degrees centigrade. Occasionally,
because of continental drift, some volcanoes
are submerged in seawater. Also, the noun ‘volcano’
originates from the island ‘Vulcano’,
which in Roman mythology, is the home of Vulcan, the god of fire.
Where are volcanoes found?
Volcanoes are usually found between
tectonic plate boundaries, some examples are : the Pacific plate, the Atlantic
plate and the Eurasian plate. Most of
the volcanoes are found around the Ring of Fire. Volcanoes, though mostly
seen above ground, could be beneath us at any moment. Luckily, the last volcano
in Britain last erupted 50 million years ago!
How do volcanoes erupt?
Firstly,
as the plates are pulled away from each other, magma seeps through the crust
and solidifies creating a cone, a shield shape or a flat hole, then ash billows
out of the crater.
Alfie, we have learned a lot about volcanoes from your text! We liked your use of brackets to add extra information, powerful verbs and technical vocabulary. To improve you explanation text, you could uplevel a connective and check your writing carefully to make sure it is clear.
ReplyDeleteThis is a very informative explanation text Alfie. I am impressed by your use of technical vocabulary and range of interesting facts. Also, I like the way you have used brackets to include additional information and a colon before the start of a list. Well done!
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