What are some common uses of rocks mentioned in the passage?

• Making roads, walls, and buildings

• Creating jewelry and ornaments

• Producing electricity

• Manufacturing plastic

What is crushed limestone used for?

• To make cement

• To create glass

• To produce salt

• To manufacture bricks

From what material is glass made?

• Sand

• Clay

• Limestone

• Graphite

What mineral is found in pencils?

• Graphite

• Copper

• Iron

• Gold

Which metal is mentioned as being used to cover the outsides of pans?

• Copper

• Silver

• Gold

• Iron

What is soil made of according to the passage?

• Small pieces of rock

• Large boulders

• Pure minerals

• Organic matter only

Why is salt considered an essential mineral?

• People cannot live without it

• It is used to make glass

• It is used in construction

• It is a component of pencils