Monday, 24 August 2015

‘Tagging’ water molecules – to explore the water cycle

Have you tried this thought experiment to investigate the water cycle? "‘Tagging’ water molecules – to explore the water cycle" is one of a series of ELIs about the water cycle.

Pupils carry out a thought experiment to visualise the movement of an imaginary ‘tagged’ bright blue water molecule as it moves through various parts of the water cycle. Molecules can actually be ‘tagged’ and traced using radioactive isotopes, so the principle is used – if not the bright blue colour.
There are five Earthlearningidea Water Cycle activities and they demonstrate pupils' progression of thinking skills. They can be found in the index on the website under 'Water cycle'.

Monday, 17 August 2015

Evidence for continental drift

'Did the continents move for you?' In this ELI+ activity, pupils plot the movement of continents using apparent polar wandering curves.

By doing this Earthlearningidea pupils can:-
- appreciate that magnetic minerals become magnetised in the direction of the Earth’s magnetic field;
- by recording this remanent magnetisation, it is possible to construct apparent polar wandering curves for each continent;
- realise that the magnetic pole has not wandered but the apparent curve can be used to determine the position of the continents at the time of the formation of the rocks with the magnetic minerals;
- the apparent polar wandering curves give good evidence for continental drift.
Other related activities can be found on the website.

Monday, 10 August 2015

Fossilise! A game about fossils

A rainy day in the holidays? Try 'Fossilise!' This ELI is a game about how fossils form and survive. You collect cards as you play the game and, of course, everyone wants to win to collect the Gold Nugget card.

You will need copies of the game and the cards, some scissors to cut out the cards and counters, dice and shakers.
More activities for children to try at home can be found on our website, although they will need adult supervision as they are designed primarily for use in schools.

Monday, 3 August 2015

Karstic scenery - modelling chemical weathering

The new ELI published today is 'Karstic scenery - in 60 seconds: modelling the chemical weathering of limestone'.

 In this activity pupils compare the results of water on sugar cubes with features which develop as a result of the chemical weathering of limestone.
Many more activities about weathering can be seen on the home page of our website under 'Activities related to the new ELI'.

Saturday, 1 August 2015

Monday, 27 July 2015

The mineral foundations of everyday life

The Earthlearningidea 'The mineral foundations of everyday life' involves a matching exercise, where pupils are asked to match photographs of everyday objects with photographs of the minerals from which they are manufactured.

This activity can be used in a variety of circumstances, e.g. in revision of a minerals topic by relating photographs to some minerals which pupils have already encountered. It could feature in a geology lesson, or in discussion of the
mineral wealth of a country.
There are many more activities about minerals on our website; the search facility will find them for you.

Monday, 20 July 2015

Weathering limestone - with my own breath!

Today's new ELI is 'Weathering limestone – with my own breath! - a classroom demonstration of how limestone is weathered'
This is a pupil activity, or a demonstration, involving blowing into neutral water to produce a weak carbonic acid. Powdered limestone is added to neutralise the acid, as a quick-acting laboratory example of how limestone is weathered by rain (a weak carbonic acid) in the natural world.
Lots of activities to do with weathering can be found in the list of 'Activities related to the new ELI' on our website.