Mini-world water cycle

This is the second in our water series, 'Mini-world water cycle'. This is a water cycle demonstration model in a transparent box, using materials readily available in the classroom. Brighten up the mini-world by standing it on blue paper to make the ‘sea’ blue, adding a model sunbather with a sun shade to the sandy ‘beach’, and cotton wool to the freezer pack to make fluffy clouds, as in the photo above. But beware – the sunbather will have to leave when it starts to rain!
There are lots more free-to-download activities on our website covering a whole range of Earth-related topics

More on modelling igneous processes using wax and sand

Following last week's post, a reader has sent in the following suggestion for an extension to the original ELI, 'Volcano in the lab!' 
"This year I combined this ELI with ‘Partial Melting’ and created a mixed layer of pebbles and wax below the sand. Students were thus able to see that it is not necessary to have a completely molten layer to generate magmas.
Several phenomena we observed this year included, small puffs of ‘magma’ rising from the vent, so we ended up with small balls of wax floating on the water. The other larger vent demonstrated a rather complex intrusive body beneath the surface flow."
We will always publish any good ideas you send to us so keep them coming please!
Send to info@earthlearningidea.com

How to model igneous processes using wax and sand

'Volcano in the lab' is a very popular activity with everyone. Using wax, sand and cold water, it models very successfully a volcanic plumbing system with the lava spreading out over the surface of the Earth at the top. In this model it is possible to see through the Earth's crust.
The wax can be re-used lots of times so it's a useful resource that you can keep ready.
This is one of many innovative ideas, all free to download from our website.

First in new ELI series about water

This is the first in a new series of Earthlearningideas about water - 'Changing state - transforming water'  This ELI involves a series of three activities for pupils to encounter and discuss the changing states of water, from ice to water to water vapour and back again – giving opportunities to develop a range of observation and description skills.
There are lots of other watery ideas in the list of 'Related ELIs' on the home page of our website or in Teaching strategies (link from home page).

Mineral expert - identifying minerals using 'action' tests

In 'Be a mineral expert - 1' pupils were asked to identify a set of unknown minerals using the properties of colour, habit, lustre and cleavage that they could see. In today's activity 'Be a mineral expert - 2', they are asked to use the 'action' tests of streak, density, hardness and the acid test to further identify unknown minerals.
More minerals activities can be found on the ELI website.

Why do igneous rocks have different crystal sizes?

This activity simulates crystallisation from a melt at different rates of cooling of Salol (phenyl salicylate). It can be included in lessons on the rock cycle to model the cooling and crystallisation of magma to form igneous rocks. We have just added some video clips which show crystallisation on room temperature, cold and warm microscope slides.
These video clips are published with permission from the Earth Science Education Unit which provides no fee Earth science/Geology CPD to teachers and teacher trainees across England, Scotland and Wales, through workshops for schools, teacher meetings and teacher education institutions/organisations.





Click HERE to watch the video clips

Be a mineral expert - beginning to identify minerals

'Be a mineral expert - 1; beginning to identify minerals'. This is the first of a series of mineral identification activities. Here pupils base their identification just on the properties they can see, i.e. colour, crystal habit (shape and proportion), lustre (reflection of light) and cleavage (regular breakage pattern).
This series of activities on minerals can be used in a variety of lessons, ranging from the nature of minerals as the ‘building blocks’ of rocks to the origins and recycling of useful elements in the Earth. Search the website for similar activities.