Ice is the solid form of water. Water is most dense at 4° Celsius, but it can stay liquid below 0° Celsius if the pressure is high enough. Above 0° Celsius, increasing pressure has little effect on melting point until about 50-80 …
When water freezes, what does it become? Read More »
Square is a type of polygon (flat plane shape). A regular square has four equal sides, and each angle is a right-angle. 4 edges = 4 x 2 = 8 Square has 8 edges and is one of the Platonic solids. The Chinese civilization first used the …
What shape has 4 edges? Read More »
Maintaining cleanliness Hygiene is the term used for cleanliness; it is an act of maintaining oneself in a clean, healthy, and attractive manner. It is done by both men and women alike. Personal hygiene consists of practices like bathing daily, brushing teeth (and last-minute rush before leaving home), washing …
Power extracted from the Sun. The sun is a unique source of power that we can tap into. Solar energy, also known as Sunlight, is the radiant light and heat from the Sun. The process of photosynthesis provides virtually all life on Earth with a primary source of …
What is solar energy? Read More »
Light is a particular type of electromagnetic radiation or EMR. Electromagnetic radiation is composed of an electric field and a magnetic field. These fields are perpendicular to each other and the direction of propagation for light – so as light travels, …
What is the fastest thing in the world? Read More »
A telescope is an observational tool used to detect distant objects. Telescopes can be found at observatories generally on top of mountains or tall buildings to increase the view height and limit distortion due to the atmosphere. Telescope comes from …
What machine do scientists use for observations of distant objects? Read More »
Veterinarians are specialized physicians trained to prevent, diagnose and treat disease in animals for a specific species. Veterinarians can choose to practice with or without surgical procedures depending on their determination or personal preference. The word “veterinarian” is derived from Latin, veterinae meaning “working animals,” and …
What doctor treats animals? Read More »
A Triangle is one of the most fundamental shapes in Geometry. This shape has three vertices, three edges, and three faces. It’s a 2D shape usually defined as a closed figure with three straight lines. Triangles are probably the most studied shape in …
What has three sides and three vertices? Read More »
Because of gravity Ever wonder why does gravity makes things fall? For instance, if you drop an apple, it will go down and not up. The people around the world wondered that and then looked at their teacher like they were crazy because of this …
Why does everything that falls, fall down? Read More »
No According to a recent study published in the journal, Current Biology, living on Mars might be just as impossible as living on the Moon. Researchers from Stanford University conducted the study, and it analyzed data from the Human Research Program’s NASA Twin Study. If you …
Can humans live on the moon? Read More »
