Rocks and Minerals Flashcards

Grade 3 · Science · Flashcards

Study rock types, minerals, and earth science vocabulary.

Flashcards

mineral: A natural solid with a specific chemical composition, like quartz or feldspar
rock: A solid made of one or more minerals found in Earth's crust
igneous rock: Rock formed when magma or lava cools and hardens
sedimentary rock: Rock formed from compressed layers of sediment over time
metamorphic rock: Rock changed by heat and pressure deep inside Earth
magma: Molten rock beneath Earth's surface
lava: Magma that has reached Earth's surface
rock cycle: The continuous process of rocks transforming from one type to another
sediment: Small particles of rock, sand, or organic material deposited by water or wind
granite: A common igneous rock with large mineral crystals, formed from slow-cooling magma
obsidian: A glassy igneous rock formed from rapidly cooled lava
marble: A metamorphic rock formed from limestone under heat and pressure
sandstone: A sedimentary rock made of compressed sand grains
geologist: A scientist who studies rocks, minerals, and Earth's structure
hardness: A mineral property measuring how resistant it is to being scratched