चट्टानों के प्रकार | रॉक उदाहरण

चट्टानों के प्रकार और उदाहरणों के बारे में अक्सर पूछे जाने वाले प्रश्न

What are the three main types of rocks and how are they formed?

The three main types of rocks are sedimentary, igneous, and metamorphic. Sedimentary rocks form from particles settling and hardening, igneous rocks form from cooled magma or lava, and metamorphic rocks form when existing rocks are changed by heat and pressure.

What are some easy examples of each type of rock for students?

Common examples include sandstone, limestone, and shale for sedimentary rocks; granite, basalt, and pumice for igneous rocks; and marble, slate, and gneiss for metamorphic rocks.

How can students create a chart to compare different types of rocks?

Students can make a chart with columns for rock type, examples, description, how each is formed, and images. This helps visually compare and understand the differences between sedimentary, igneous, and metamorphic rocks.

What is the difference between intrusive and extrusive igneous rocks?

Intrusive igneous rocks form from magma cooling slowly underground, resulting in larger crystals (like granite). Extrusive igneous rocks cool quickly on the surface from lava, creating smaller crystals (like basalt).

How can I explain the rock cycle to 4th to 6th grade students?

The rock cycle shows how rocks change from one type to another: sedimentary to metamorphic, metamorphic to igneous, and igneous to sedimentary, through processes like heat, pressure, melting, cooling, and erosion.