Wind can make rocks smoother.

Most sand is full of quartz.

The sand in deserts and on beaches comes from a process called ___________.

One cause for weathering is desert ____________ that blow against rocks.

Waves __________ also cause weathering on ocean shores.

Bit by bit, the _______ in rocks break apart.

Which of these can cause weathering?

Which of these does NOT break up rocks?

Large rocks blow against small rocks to make sand.

Wind can cause weathering.

Wind can blow sand into the desert.

A common mineral that looks like glass is called ______.

All nonliving solids found on Earth are made of ________.