5th Grade Science

Front

The thin outer layer of the earth is called the ______.

Back

crust

Front

The center of the earth is called the ____.

Back

core

Front

Most of the earth's mass is in the ______.

Back

mantle

Front

An inorganic substance found naturally in the earth is called _________.

Back

a mineral

Front

A substance made of things that were never alive is _________. Options: organic, luster, synthetic, inorganic

Back

inorganic

Front

The characteristic of a mineral to break along smooth, straight lines or into flat sheets is called ________.

Back

cleavage

Front

The color of the mark made when a mineral sample is rubbed on a harder surface is called the ______.

Back

streak

Front

Rock formed by heat and pressure deep below the earth's crust is called ___________.

Back

metamorphic

Front

Rock that forms when layers of sediment and organic material harden is called ___________.

Back

sedimentary

Front

Rock formed from magma or volcanic lava is called _______.

Back

igneous