When a tropical storm's winds increase past 74 MPH, it's classified as one of these
12 to 30 miles up, this atmospheric "layer" largely in the stratosphere protects us from the full force of ultraviolet rays
The ants seen here of the genus Atta are known by this "occupational" name
This insulin disorder, the seventh leading cause of death in the U.S., can lead to kidney failure & amputations
[Here comes Bill Nye, The Science Guy] The north pole on a bar magnet will attract this pole on another bar magnet
A "Mission to" this planet would be about 34.6 million miles, or its closest approach to Earth
Friction, as when a brake pad slows a wheel, converts kinetic energy into this
Adjective for the simplest type of vibratory motion; it's seen (& heard) in violin strings
An analysis of seawater shows that about 78% of the total solids are this one mineral
It's a fracture of the Earth's rocky outer shell where sections of rock slide against each other