Hard rocks - Are difficult to scratch, If hard rocks are polised - They are smooth and shiny, Soft rocks - Scratch and crumble easily, Chalk - A soft rock, Granite - A hard rock, Permeable - Lets water soak through, Impermeable - Doesn't let water soak through, Slate - Is used on house roofs, Fossils - Remains of animals found in rocks, Pebbles - Small pieces of round rock,

Rocks

بواسطة
طباعة
تضمين

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

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