The metric system, now known as the International System of Units, is an internationally recognized decimalized system of measurement....
Laboratory investigations are carried out to prove ideas and to verify information. These investigations must be performed with accuracy, safety, and under conditions...
The Celsius temperature reading is followed almost everywhere except the USA. For almost two centuries it was known as centigrade. In 1948 it was officially changed from...
Probeware is an integral and indispensable component of a science classroom. In this chapter you will learn to conduct experiments that make use of technolgy to collect….
Natural resources are materials people use from the environment. For example, the pencil that you useto write is made up of wood, graphite, aluminum and rubber...
Soil is one of earth’s most important natural resources. Without it, plants could not grow and plant-eating animals could not live; meat-eating animals would also perish...
Water is odorless, tasteless, and has a blue tint. Water covers almost three quarters (71%) of the earth’s surface. Water is made up of 2 atoms of hydrogen and one atom of oxygen..
When you take a deep breath, 99% of the inhaled air is O2 or nitrogen. The other 1% is droplets of liquids, solid particles and ohter pollutants. The earth’s atmosphere is...
