Learn what plankton is. Get the definition and examples of different types of plankton and discover their ecological importance.
Monthly Archives: March 2023
Find out how many minutes are in a day. Compare the number of minutes in a solar day versus a sidereal day and see why there is a difference.
How Many Minutes in a Day? Easy Time Conversion
Learn about the fire rainbow or circumhorizontal arc. See how it works and how to distinguish it from cloud iridescence or sun dogs.
Fire Rainbow: The Mesmerizing Beauty of the Circumhorizontal Arc
Get the Henderson Hasselbalch equation and examples showing how to use it to calculate the pH of weak acids or weak bases.
Henderson Hasselbalch Equation and Examples
Get total solar eclipse facts, including a list of upcoming total eclipses, the stages of the eclipse, and special features to see.
Total Solar Eclipse – Diamond Ring Effect, Baily’s Beads, and ...
Learn about the chalcogens on the periodic table. The chalcogens are group 16 or the oxygen group. These elements share common properties.
Chalcogens on the Periodic Table – Oxygen Group or Group ...
Get a list of things that float or sink in water. Learn how density and buoyancy determine whether a substance floats or sinks.
Things That Float or Sink in Water
Learn how to make a compass using simple materials. See how a homemade compass works and learn how to find North.
How to Make a Compass
Get the Hund's rule definition and examples in chemistry and learn how it relates to the Aufbau principle and Pauli exclusion principle.