Enllaços:

https://sites.google.com/site/cienciessocialsgfia/ciencies-socials-1r-eso/la-representacio-de-la-terra

https://sites.google.com/institutsantpol.cat/socials1/continguts/unitat-5-tema-9-la-terra/2-els-moviments-de-la-terra

http://www.buxaweb.cat/dossiers/medifisic.htm

https://www.slideshare.net/slideshow/medi-fsic/79696158

https://www.slideshare.net/slideshow/el-medi-fisic-i-els-seus-elements-la-terra/52043829

https://ccsocials.blogspot.com/2013/09/tema-1-el-relleu-marc-fisic-de-les.html

https://geotercer.blogspot.com/2013/10/tema-1.html