Types of Rocks
What are the three types of rocks?
Igneous, sedimentary and metamorphic
How do sedimentary rocks turn into metamorphic rocks?
when subjected to extreme heat and pressure
Made from compacted sand grains
Sandstone
a coarse-grained rock that forms when magma cools slowly beneath the Earth's surface
granite
What is the function of the heart in the human body?
Tp pump blood around the body, delivering oxygen and nutrients to cells
What process breaks down rocks into smaller pieces?
Weathering
Why is the rock cycle important?
Explains how rocks are formed, broken down, and transformed over time.
Often formed from shells and marine organisms
Limestone
a volcanic glass formed from very rapid cooling of lava, resulting in a smooth, glassy texture
obsidian
Three states of matter
solids, liquids and gas
What is the main cause of metamorphic rocks changing their form?
Pressure and heat
Why can rocks change types multiple times?
The rock cycle is continuous, rocks break down, melt and reform many times under different condition.
Formed from compacted mud and clay particles
Shale
a light, porous rock formed from gas-rich lava that cools quickly, often able to float on water
pumice
What is the chemical formula for water?
H2O
Which type of rock forms from cooled lava or magma?
What effect does heat and pressure have on rocks.
heat and pressure cause physical and chemical changes in rocks, transforming them into metamorphic rocks
Formed from compressed plant material over millions of years
coal
a fine-grained rock that forms when lava cools quickly on the Earth's surface
Basalt
What is the basic unit of life?
A cell
What are the two types of igneous rocks/
intrusive and extrusive
What are the main processes in the rock cycle
weathering, erosion, deposition, compaction and cementation, melting, cooling and heat and pressure
Three parts of a plant cell?
cell wall, chloroplast, and vacuole.