Monday, 22 May 2017

Partial melting model and real rock

New ELI+ today - 'Partial melting model and real rock; comparing a model with reality to develop understanding of the partial melting process'

This is a consolidation exercise on partial melting, to ensure that students understand how a model mirrors processes in real rocks. The partial melting process can be directly linked to the key rock-forming minerals by reference to Bowen’s Reaction Series, shown in the activity. Bowen investigated the melting and crystallisation temperatures of a series of the minerals commonly found in igneous rocks, to discover the order of melting (and therefore their order of crystallisation).
Many more activities associated with igneous processes and plate tectonics can be found either by using the search engine or the index on our website.

Monday, 15 May 2017

Is that weathering or is it erosion?

'What's the difference between weathering and erosion?’ This Earthlearningidea addresses common misconceptions about weathering and erosion.

Textbook surveys have shown that misconceptions between weathering and erosion are common, when the scientific consensus is clear.
Use the search engine on our website to find lots of activities about weathering and about erosion.

Monday, 8 May 2017

This week's new Earthlearningidea is 'Filling the gap – picturing the unconformity ‘abyss of time’? Working out what happened during unconformity time gaps'.

Ask your pupils to picture what happened in the time between the upper and lower beds of an unconformity. This exercise can be carried out for any unconformity in the field or on a photograph.
Other activities to help explain the enormity of geological time can be found here on our website.

Monday, 1 May 2017

Isostasy: State of balance in the Earth's outer layers

Earthlearningidea has two activities which explain isostasy. The first is 'Isostasy 1: modelling the state of “balance” of the Earth’s outer layers'.

This activity establishes the principle of isostasy, using wooden blocks floating in water and in a denser medium.
The second activity is 'Isostasy 2: “Bouncing back” after the ice'

This is a demonstration of the effects on a continental land mass of an ice sheet growing and then melting.
Many more innovative activities, which teach a lot but are also fun to do can be found on our website.

Monday, 24 April 2017

Modelling mighty rivers and small-scale processes

The new ELI is 'Investigating small-scale sedimentary processes AND modelling mighty rivers' This activity uses the ‘Mighty River in a small gutter’ Earthlearningidea activity at different scales.

The ‘Mighty river in a small gutter’ can be used to investigate surface processes, caused by water currents, in the classroom at two different scales.
Pupils of all ages can learn a lot from this activity and have fun at the same time!
More investigations can be found on our website.

Monday, 17 April 2017

Rocks are in the rock cycle e-i-e-i-oooooooooo

For the holidays, the ELI Team present you with 'The Rock Cycle Song'. Please sing loudly to the tune of 'Old MacDonald had a Farm'

Lots of activities about the rock cycle can be found on our website.

Monday, 10 April 2017

Modelling river pothole-formation by calculation

The new ELI continues our maths in ELIs theme: 'A bucket for a pothole: visualising past processes by calculation; modelling river pothole-formation by calculation – thinking through the assumptions'.

River potholes like the ones shown in the photos above are thought to have been formed by abrading gravel moved by eddies in the water as it flows over the bedrock. This activity seeks to mimic this mode of formation in order to provoke calculation and discussion around the processes involved.
Many more activities to do with rivers and river erosion can be found on the website.