The goal of Unit 11 of The Physics Classroom Tutorial is to develop an understanding of the nature, properties, behavior, and mathematics of sound and to apply this understanding to the analysis of music and musical instruments.
It's as big as the continental United States, but covered in sand. If you like to dig your feet in the sand, then the Sahara Desert is the place for you. Watch out though - it's hot! Temperatures range from 122 F to below freezing in the winter. Sand dunes can reach over 189 meters tall or be flat for miles and miles.
Travel Tips. The Sahara Desert has the highest recorded temperatures in the world. Related Articles. While historic events such as Europe's Little Ice Age in the 1500s through 1700s greatly affected the Sahara Desert's climate for some time, its climate has been relatively stable for the past 2,000 years.