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George Carey Church of England Primary School

A Christian School For All

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Year 5

Welcome to Year 5!

 

This half term year 5 will be studying 'Volcanoes'.

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. Beneath a volcano, liquid magma containing dissolved gases rises through cracks in the Earth’s crust. As the magma rises, pressure decreases, allowing the gases to form bubbles. How the magma (lava) behaves when it reaches the surface depends on both its gas content and chemical composition. Lavas with low silica contents have low viscosities and flow freely, allowing any gas bubbles to escape readily, while lavas with high silica contents are more viscous (resistant to flow), so that any trapped gases cannot escape gradually.

 

 

 

 

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George Carey
Church of England
Primary School

A Christian School For All

Contact Us

Rivergate centre, Minter road, Barking, IG11 0FJ

Telephone: 0208 270 4040

Email: office@george-carey.bardaglea.org.uk