Geologists called stratigraphers are involved with determining the earth's age & history by looking at layers of these

This is the smallest unit of computer memory

It's basically a cone, but tornado-producing clouds aren't called cone clouds but these

The American Dental Association recommends doing this with an interdental cleaner at least once a day

This type of plant keeps its leaves all year, as the name implies

Using spectrometry, you'll find that helium produces a bright line of this color

Ir"resistable” German physicist with a law about the flow of an electric current

The first electric light was an arc lamp with two rods of this element

In the early 1930s surgeon Alexis Carrel & this American aviator invented a mechanical heart

This branch of zoology that focuses on insects emerged as a distinct field of study in the early 19th century

A block & tackle uses 2 or more of this simple machine to reduce the amount of effort needed to lift a load

This type of atom is formed by the loss or gain of electrons

Two batteries connected in a simple series circuit combine their voltage to produce a bright light; when they're connected in this type of circuit with a geometric name, they have a longer life but produce dimmer light

From the Greek for "against life", these substances kill or inhibit the growth of infectious organisms

Proprioception is a synonym for this sense of balance

Types of seismic waves include L, P & S, which stand for Love, primary & this

The Latin word for this element is stannum

Scientists use triangulation to locate this, the point on the Earth's surface right above a seismic event

This medical specialty is also known as chiropody

It's the one-word name for a red blood cell

Diatoms are among the most numerous of these plantlike plankton that drift with the ocean currents

This 3-letter nitrogen compound is used as an explosive in munitions & demolitions

The ecliptic, the apparent path of the Sun among constellations, is aka a "great" this

Information about the medical problems of those wearing this metal tag can be accessed 24 hours a day

Hello...hello...hello...it's an ultrasound image of the heart used to diagnose congenital heart disease