An instrument for measuring cloud height is:

The part of the earth’s interior equal to about 1 percent of the earth’s mass is the:

Name one Health Education Standard (1), explain the skill (1), and give an example of content you could use to develop skills with students in grades 6-12 (2). 

The study of the structure and evolution of the entire universe is called:

In southeast Asia, a hurricane is called a:

Water containing dissolved minerals is:

The inclination of the axis, in conjunction with Earth’s motion causes a change in the ___________ on Earth.

Smog is caused by smoke and:

The science of the atmosphere and of the weather is called:

The discharge of waste heat or the return of heated water to rivers and lakes is: