science test 💩 Flashcards
(20 cards)
What is the rock cycle?
The rock cycle is the process that describes how rocks change from one type to another over time. It’s a continuous cycle driven by Earth’s internal heat, pressure, and surface processes like weathering and erosion.
what are the 3 main types of rocks?
Igneous, sedimentary, metamorphic
How are igneous rocks formed?
Formed by: Cooling and hardening of magma or lava.
Examples of igneous rocks?
Examples: Granite (from magma), Basalt (from lava).
How are sedimentary rocks formed?
Formed by: Layers of sediments (tiny pieces of rock) being compacted and cemented over time.
examplkes of sedimetary rocks?
Examples: Sandstone, Limestone.
How are metamporphis rocks foremed?
Formed by: Heat and pressure changing existing rocks (without melting them).
Examples of metamorphic rocks?
Examples: Marble (from limestone), Slate (from shale).
What does weatherin do in the rock cycle?
Rocks break into small pieces (sediments) by wind, water, etc.
What does erosion do in the rock cycle?
Sediments are moved by water, wind, ice.
What does deposition do in the rock cycle?
Sediments are dropped and begin forming layers.
What does Compaction/Cementation do in the rock cycle?
Sediments are pressed and glued together (forms sedimentary rock).
What does metling do in the rock cycle?
Rock melts into magma (usually deep underground).
what does cooling do in the rock cycle?
Magma/lava cools and hardens into igneous rock.
what does Heat & Pressure do in the rock cycle?
Changes rocks into metamorphic rock without melting.
how do igneous rocks transform into sedimentary rocks?
Igneous → Sedimentary: Weathering → Erosion → Deposition → Cementation
how do s rocks transorfm into m rocks?
Sedimentary → Metamorphic: Heat and pressure
how do m rocks turn into i rocks?
Metamorphic → Igneous: Melting → Cooling
doe sthe rok cycle end? true false?
false The cycle never ends — rocks are always changing.
