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Most nocturnal animals have the ability to see well in the dark, which makes it easier for them to sneak up on unsuspecting prey. Their pupils dilate to allow maximal light exposure. Animals with good night vision also have many…
Most people become confused when they try to identify the differences between boas, pythons and anaconda snakes, even though anacondas are a subset of boa snakes. They all are cold-blooded, carnivorous and swallow their food whole, but despite similarities, each…
Algae are not plants, animals or fungi. They belong to Kingdom Protista, a diverse group of single-celled eukaryotes. Protists have their own kingdom because many species share some characteristics of plants, animals or fungi. Algae belong to the group of…
The logarithm of a number is the power to which the base must be raised in order to obtain this number; for example, the logarithm of 25 with the base 5 is 2 since 52 equals 25. “Ln” stands for…
Cats make interesting and effective test subjects for school science projects. Since many people own cats as pets – or know others who do – students can easily access these furry test subjects. Make sure you have a parent around…
An old saying tells us that “the whole is greater than the sum of its parts”. A fancier way of saying this is with the term emergent properties, a term used in science, systems theory, philosophy, urban studies and even…
The concept of proportion is probably familiar to you, but you might not be able to write a strict mathematical definition for it. For example, you might recognize that a 10-year-old is smaller than a normal-sized adult in the same…
The mean and sample mean are both measures of central tendency. They measure the average of a set of values. For example, the mean height of fourth graders is an average of all the varying heights of fourth grade students.…
Grasslands can be found on almost every continent, and as their name suggests, they are the areas where the most plentiful form of vegetation is grasses. Temperate grasslands are also known as prairies or steppes, and while these temperate grasslands…
Whereas the imperial system of measurements uses at least three units for volume, the metric system has only one: the liter. It’s defined variously as the volume of a kilogram of water at 4 degrees Celsius and atmospheric pressure, as…
