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Socials g9 - rocks
rocks stack 2
Question | Answer |
---|---|
what are the 2 ways that igneous rocks form? | Igneous rocks are formed when molten rock cools and solidifies and intrusive igneous rocks form when magma cools and solidifies in the earths surface. |
Give an example of intrusive igneous rock? | Granite. |
How is volcanic igneous rock formed? | It is formed when lava cools and solidifies quickly when erupted into the earths surface. |
Give three examples of volcanic igneous rock? | obsidian, Basalt and pumice. |
Give the 4 characteristics of igneous rock. | crystals, visible minerals, resistant to erosion and interlocking crystalline structure. |