Do You Know
Questions & Answers on General Knowledge.
What is electricity?
Everything is made of atoms. At the centre of an atom is the nucleus made of protons and neutrons. An atom also has tiny electrons which spin around the nucleus. Electrons have a negative electrical charge, and protons have a positive charge. The electrons don't stay in one place. They move around to different atoms, so some atoms have more protons, some have more electrons. An atom with more protons is positively charged. One with more electrons is negatively charged. When the electrons pass from one atom to the next, it creates an electric current.
What are "dog days"?
What does the SPF on sun screens mean?
Do snakes shed their skin?
Why are some kids better at schoolwork than others?
How does a violin create sound? Is the sound only made by the strings or is it made with the help of the violin's shape and structure?
Which were the states that formed the Confederates?
What is the relationship between turbulence, laminar flow, and Reynolds number?
Do neon lights have glass that is not colored, but has phosphors that emit a particular color?
When you push up on an object, are you creating thermal energy or does that only occur when something does work on you?
How does a search engine work?
What makes a soap bubble round?
How does the universe stay together?
How long have people lived in Australia?
What is an orbit?
Why is a restricted limit called a “deadline”?
Why do many fluorescent lamps blink before they come on?
Why isn’t Pluto a planet anymore?
How long do trees and shrubs live?
What is a superconductor?
What type of people help make a community operate well?
How did teenagers become a separate culture?
How do clouds exist? If oxygen molecules, which must weight less than water vapor are drawn toward earth, then why aren't the clouds?
Can one's health be adversely affected by the use of certain wraps, films, or containers, when heating food in the microwave?
What is a jet plane?
Why is it bad to put metal in a microwave oven?
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