Igneous Rocks

What are igneous rocks?

• Rocks formed from the solidification of molten rock material.

• Rocks formed from the evaporation of water

• Rocks formed from the compression of sediment

• Rocks formed from the cooling of hot springs

How are igneous rocks formed?

• From the cooling of water vapor

• From the solidification of molten rock material

• From the compression of sedimentary rocks

• From the accumulation of organic matter

What are the two main types of igneous rocks?

• Volcanic and plutonic

• Basaltic and granitic

• Sedimentary and metamorphic

• Intrusive and extrusive

What is the difference between intrusive and extrusive igneous rocks?

• Formation process

• Color

• Hardness

• Density

What are the characteristics of igneous rocks?

• Formed through erosion and weathering of sedimentary rocks

• Contain high levels of organic matter

• Usually found in liquid state at room temperature

• Formed through the solidification and cooling of magma or lava, often have a crystalline structure, may contain minerals such as quartz, feldspar, and mica

How do geologists classify igneous rocks?

• By the location where they are found

• According to their age and hardness

• Based on color and weight

• Based on mineral composition, texture, and cooling rate

What are some uses of igneous rocks?

• Food production

• Clothing manufacturing

• Building materials, decorative stones, glass and ceramics production

• Fuel for vehicles and machinery

What are some famous examples of igneous rock formations around the world?

• Giant's Causeway, Devil's Tower, Uluru

• Great Barrier Reef, Grand Canyon, Mount Rushmore

• Taj Mahal, Eiffel Tower, Sydney Opera House

• Mount Everest, Mount Kilimanjaro, Mount Fuji