idea something can't be fully known or seen
scientist who studied the interior and surface of earth
Open in earths crust through which solid and molten rock, ash and gases escape
layer of solid rock beneath the loose rock fragments
mineral breakage into rough and uneven surface
The split of a mineral into two smooth surfaces
pure, naturally occurring solid minerals that are building blocks of rock
Features That material or object has
10 minerals ranked in order of hardness
colour of the powder that a mineral leaves behind when you rub it across the rough surface
Rocks that form from hot molten rock
rocks that have been changed because of intense pressure and heat within earths interior
Rock formation formed between 544 and 4500 million years ago
A wedge shaped area of land, extending from the Canadian shield to the Rocky Mountains
alfred wegeners hypothesis now accepted of the movement of continental land masses
continental and oceanic crust