June 2021

How can we make low pitched and high pitched sounds? If an object vibrates fast, it makes a high pitch sound. For example, a small bell. If an object vibrates slow, it makes a...

Does getting hit by hail hurt? Broken windows are the most common threat—even after the glass shatters, large hail can get blown in the opening and hurt you or anyone nearby. Why is hail...

How does a storm make you feel? Thunderstorm-related physical symptoms aren’t all in your mind. Thunderstorms are dramatic events, so it’s not surprising that they often bring out powerful emotions, ranging from excitement to...

Does lightning have different colors? Lightning comes in every color of the rainbow (Red, Yellow, Green, Cyan, Blue, and Violet, to name a few). It’s almost always white, but often it’s tinged with another...

Does elements have a fixed boiling point? Pure substances, such as an element or a compound, melt and boil at fixed temperatures. However, mixtures melt and boil over a range of temperatures. Example: although...

Which of the following phenomenon occurs at absolute 0 temperature? Absolute zero is the lowest possible temperature where nothing could be colder and no heat energy remains in a substance. Absolute zero is the...

Is Blue Footed Booby a duck? The blue-footed booby is distributed among the continental coasts of the eastern Pacific Ocean from California to the Galápagos Islands south into Peru. It is strictly a marine...

Can ligers be classified? The liger is distinct from the similar hybrid called the tigon, and is the largest of all known extant felines. They enjoy swimming, which is a characteristic of tigers, and...

How do plants grow without soil? Using a growing method called “hydroponics,” you can grow plants in a watery solution of mineral nutrients instead of soil. The word “hydroponic” comes from the Greek words...

Why is the soil in the jungle so poor? One reason the rain forest soil is so poor is that most of the nutrients are stored in the plants themselves. In any forest, dead...