Different Kinds of Rock Crossword Puzzle

QUESTIONS LIST:

• igneous: this type of rock forms from cooled magma or lava.
• sedimentary: this type of rock is formed from the accumulation of sediment.
• metamorphic: these rocks are formed through heat and pressure transforming existing rocks.
• magma: the molten rock beneath the earth's surface is called this.
• sediment: this component of sedimentary rocks often includes fossils.
• volcanic: this type of igneous rock forms when lava cools quickly at the surface.
• lithification: the process by which sediments become sedimentary rocks is called this.
• obsidian: the natural glass formed from rapid cooling of lava is called this.