How Are Tornadoes Classified?
Reading Time: 2 minutes How Are Tornadoes Classified? Since 2007, the United States has classified tornadoes using the Enhanced Fujita Scale, also called the EF Scale, which employs estimates …
Category: Featured
Different Types of Birthmarks – 7 Most Common Types, Prevalence, & Risk Factors
Reading Time: 3 minutes Different types of birthmarks fall into two categories-pigmented birthmarks and vascular birthmarks. Pigmented birthmarks occur when you have more pigment on one part of your …
At What Temperature Does Water Freeze?
Reading Time: 4 minutes At What Temperature Does Water Freeze? Water freezes at a temperature of 32 degrees Fahrenheit, 0 degrees Celsius, and 273 degrees Kelvin.—at sea level. The …
How Many Protons Are in Nitrogen?
Reading Time: 3 minutes How Many Protons Are In Nitrogen? Nitrogen has seven protons, 2 protons on the 1st shell and 5 protons on the second. The periodic table …
The Science of Choosing a Lipstick Shade
Reading Time: 4 minutes When choosing a lipstick shade, many factors come into play, such as skin tone, other makeup colors, day/evening, seasons, etc. There are no set rules, …