Monthly Archives: May 2018

When it's really cold, you can see your breath. — If you’re outside on a cold winter day or even if you breathe into the freezer, sometimes you can see your breath. Yet, sometimes it’s not all that chilly and see you puffs of vapor, while other times it’s downright frigid and you don’t see anything at all. What’s going […]

Why Do You See Your Breath When It’s Cold?

This entry was posted on May 28, 2018 by Anne Helmenstine (updated on May 10, 2021)

Abundance of Elements Earth Crust Periodic Table — Earth’s crust contains nearly all of the naturally occurring elements. This table and periodic table shows the relative abundance of elements in the Earth’s crust. Each element is represented by its atomic number, symbol, name, and abundance in milligrams per kilogram of Earth’s crust. Since 1 milligram is one-millionth of […]

Abundance of Elements in Earth’s Crust – Periodic Table and ...

This entry was posted on May 23, 2018 by Todd Helmenstine (updated on May 10, 2021)

Microwave pizza with a glass of water to keep the crust from getting tough or soggy. (Michał Kubalczyk) — When you microwave pizza to reheat it, you run the risk of turning the best food in the world into a chew toy fit only for Fido. Microwaving melts the cheese and reheats the toppings, but toughens the crust. But, it doesn’t have to be that way! You can nuke […]

Why You Should Microwave Pizza With a Glass of Water

This entry was posted on May 21, 2018 by Anne Helmenstine (updated on May 2, 2021)

Seawater Element Abundance — Earth’s oceans cover 71% of the surface of the planet. Even a casual inspection will tell you there is more to seawater than just water. You would expect the two most common elements to be water itself, hydrogen and oxygen. What else is found in Earth’s oceans? These tables answer […]

Abundance of Elements in Seawater – Periodic Table and List

This entry was posted on May 20, 2018 by Todd Helmenstine (updated on May 25, 2021)

The smoother your skin and flatter your belly, the less likely you are to get belly button lint. (Pietro Zuco) — Whether you call it belly button lint, navel fluff, or navel lint, if you find a furry little ball in your belly button, you’ve got it! Doctors and scientists have examined the fluff balls, so their cause, composition, and potential health risks are known. The Cause and Composition of Belly […]

What Is Belly Button Lint?

This entry was posted on May 16, 2018 by Anne Helmenstine (updated on May 10, 2021)

Fluid ounces to milliliter conversion example — Volume measurements can be some of the most confusing set of measurements. This example problem shows how to convert fluid ounces to milliliters. This conversion is also useful for converting recipes from European and Asian sources to the commonly used measurements in American kitchens. The fluid ounce (fl oz) in […]

Fluid Ounce to Milliliter Conversion – fl oz to mL ...

This entry was posted on May 15, 2018 by Todd Helmenstine (updated on August 7, 2021)

Waves Word Search — This waves word search contains glossary terms associated with the study of waves and wave motion. Find the words from the list forward and backward in vertical, horizontal, and diagonal directions. The puzzle is optimized to fit on a standard 8.5″x11″ sheet of paper, but it fits nicely on A4 […]

Waves Word Search

This entry was posted on May 11, 2018 by Todd Helmenstine (updated on May 10, 2021)

Geometric Optics Word Search — Geometric optics is the study of the paths of light rays. This geometric optics word search contains glossary terms associated with geometric optics. Find the words from the list forward and backward in vertical, horizontal, and diagonal directions. The puzzle is optimized to fit on a standard 8.5″x11″ sheet of […]

Geometric Optics Word Search

This entry was posted on May 7, 2018 by Todd Helmenstine (updated on May 3, 2021)

To light fireworks safely, know which ones shouldn't be held in your hand and be aware of flammable tree and buildings. (Nandhu Kumar) — Fireworks season is just around the corner (no matter what time of year it is). Here are some tips for lighting your fireworks without blowing yourself up or setting your self, yard, or neighbors on fire. You can Google “firework accidents” and see videos of all the things that can […]

How To Light Fireworks Safely

This entry was posted on May 5, 2018 by Anne Helmenstine (updated on May 10, 2021)