Layers of the Earth
The thin outer layer of the earth is called
the crust
A hard, natural substance made of one or more minerals that contain organic material is called a
rock
The characteristic of a mineral to break along smooth, straight lines or into flat sheets is called
cleavage
Rock formed by heat and pressure deep below the eart's crust is called
metamorphic
True or false: Slate is a type of metamorphic rock.
True. BONUS: What type of metamorphic rock is slate?
The center of the earth is called
the core
A mineral that can be cut and polished for use is called a
gemstone
The color of the mark made when a mineral sample is rubbed on a harder surface is called
streak
sedimentary
A rock-like substance that from decayed plant matter is
coal
mantle
The Mohs scale is used to determine the hardness of
minerals
The way that a mineral reflects light is called its
luster
Rock formed from magma or volcanic lava is called
igneous
The movement of sediment from one place to another is known as
erosion
An inorganic substance found naturally in the earth is called
a mineral
Gemstones that are beautiful and rare are called
precious stones
The ability of a mineral to resist scratching is called
True or false: Obsidian is a type of igneous rock.
True
The hot melted rock that makes up the mantle of the earth is called
magma
A substance made of things that were never alive is
inorganic
A scientist who studies the structure, rocks, and minerals of the earth is called
a geologist
True or false: If a substance is a mineral, it cannot be a metal.
False
True or False: Limestone is a type of sedimentary rock.
True
The loose material on the surface of the earth in which plants can grow is
soil