cold war

What is the Policy of Containment?

This is a foreign policy strategy created and executed by the US after WWII founding it's first key purpose in the Truman Doctrine of 1947. President Harry Truman warned of the evils of communism that threate...

How does sound travel?

Sound is transmitted by particles (atoms or molecules) in a solid, liquid or gas colliding with each other. It is a wave which is created by vibrating objects and propagated through a medium (solid, liquid or...
soliddf0

What is the Kinetic Molecular Theory of Matter?

The Kinetic Molecular Theory of Matter is a concept that basically states that atoms and molecules possess an energy of motion (kinetic energy) that we perceive as temperature. In other words, atoms and molec...
PLURAL FISH

When do you use the word “fish” and “fishes” ?

Some nouns have the same form in the singular and the plural and the word “fish” is such an example. As such, fish is the usual plural word for fish whereby the plural form is the same as the singular. However,...
shooting stars

What are Shooting Stars?

There are many different sizes of rocks that can be found in space. As the Earth revolves around the Sun, it will be exposed to some of the rocks that come in its path. When these rocks collide with the Earth’s...
notebook-with-pencil

What is the difference between practice and practise?

Do not confuse "practice" with "practise". They sound the same and even look similar (except that one is spelled with a “c” and the other with a “s”) but their meanings are different. The word "practice" is a...
why is space black

Why is space black?

Where there is no light then there is darkness. This means that a surrounding without light would be black in color. Our experience here on Earth (one common example, night and day) tells us that the color blac...