The ground is all the land on the Earth. The ground is made up of / La tierra es todo el terreno o suelo de la Tierra. Está formada por:
soil / barro
water / agua
remains of animals and plants/ restos de animales y plantas
On the other hand, water is the biggest part of the Earth, aproximately a 70%.
Por otra parte, el agua es la mayor parte de la Tierra, aproximadamente un 70%.
Water can have three states. They are: / El agua puede estar en tres estados, estos son:
liquid/ líquido
solid/sólido--> ice and snow/ hielo y nieve
gaseous/ gaseoso --> water vapour
Here you have a game./Aquí tenéis un juego:
http://www.sciencekids.co.nz/gamesactivities/statematerials.html
http://www.bbc.co.uk/bitesize/ks2/science/materials/changing_states/play/
