Rocks
Three types of rocks.
Hottest layer of the Earth
inner core
A bowl-shaped hollow area in a volcano where lava, ash, and gases come out
crater
Two ways in which rocks change
physical or chemical
The "supercontinent" that scientists believe our 7 continents came from
Pangaea
Called"fire rocks", comes from volcanoes,from melted rock that hardens
igneous rocks
outer core
Melted, liquid rock that flows from a volcano
lava
The act or process by which wind or water deposits sediment in a different location
deposition
Weathering such as these three may make rocks break down and change their size and shape
rain, snow and wind
Made when small pieces of rock called sediment stick together, may include fossils
Semi-solid layer between the crust and the outer core
mantle
Melted, liquid rock beneath the Earth's surface
magma
The natural removal of rock or soil by water, wind, or ice
erosion
Two good things that come from volcanoes
fertile soil and new land
Heat and pressure changed other rocks into these types of rocks
metamorphic
The layer of the Earth on which we live
crust
The vent in the center of a volcano through which magma and gases come out
main vent
The process of wearing away or otherwise changing Earth's surface by exposure to natural forces
weathering
People in the past used rocks for these four things
weapons, knives, spears, and tools
These are what make up rocks
minerals
4
The area below the main vent where molten rock (magma) is stored before eruption
magma chamber
A constant series of changes that happens to rocks
the rock cycle
Rock may be changed quickly from _______________ __________________
Rocks may be changed slowly from _________________ _______________
chemical changes
physical changes