#428 Why are stealth bombers invisible?
Why are stealth bombers invisible? They are not completely invisible, but they are able to reduce the reflection of radar, infrared, visible […]
#427 How far will the Voyager probes go?
How far will the Voyager probes go? As far as they can get before they are eroded to nothing by space dust. […]
#426 What is the difference between snowflakes and hail?
What is the difference between snowflakes and hail? Snowflakes are made up of ice crystals and hail is a frozen raindrop. Hail […]
#425 How does an air fryer work?
How does an air fryer work? A fan circulates hot air at high speed which cooks the food. Firstly, let’s look at […]
#424 How do mammals keep warm in the winter?
How do mammals keep warm in the winter? They have several different methods. Here are some of them. Many mammals stay warm […]
#423 Why are there twelve months in a year?
Why are there twelve months in a year? Because it is the closest match to the number of times the moon orbits […]
#422 What causes quicksand?
What causes quicksand? It forms in saturated loose sand when the sand is suddenly agitated. Quicksand is an example of a non-Newtonian […]
#421 How many revolutions has France had?
How many revolutions has France had? France has had three revolutions and they are currently on their fifth republic. The first revolution […]
#420 What is in toothpaste?
What is in toothpaste? It usually has fluoride, abrasives, flavors, humectants, and detergents. So, what do all of these things do? Fluoride […]
#419 What are the four laws of thermodynamics?
What are the four laws of thermodynamics? I didn’t know there were four laws until researching this. Thermodynamics is the study of […]