5th Grade Science: Chapter 1

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

• mantle

• core

• crust

• soil

The center of the earth is called the _____.

• mantle

• core

• crust

• soil

Most of the earth’s mass is in the _____.

• mantle

• core

• crust

• soil

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

• a mineral

• a rock

• soil

• a vein

A substance made of things that were never alive is _____.

• organic

• synthetic

• luster

• inorganic

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

• fracture

• color

• streak

• cleavage

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

• fracture

• color

• streak

• cleavage

Rock formed by heat and pressure deep below the earth’s crust is called _____.

• conglomerate

• metamorphic

• igneous

• sedimentary

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

• conglomerate

• metamorphic

• igneous

• sedimentary

Rock formed from magma or volcanic lava is called _____.

• conglomerate

• metamorphic

• igneous

• sedimentary