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 accounts for the difference between two sounds having the same frequency, loudness, etc. but generated by a guitar and a sitar?
Is size enough to scare an enemy off?
Did the continents always look like they do now?
How does current flow and return in a home electric hot water heater? I only see two black hot wires and no white return wire.
Why is CD audio better than that of a cassette?
Why do neutrinos only spin left?
Why were executions held at sunrise?
Do all pythons have red eyes?
How does glue get objects to stick to it? Do molecules in the objects bind with molecules in the glue?
If there were no friction or air resistance, would the bowling ball pendulum continue in motion forever?
How was the Sun created?
How does a tsunami form and how far does it go when it hits land?
What are feet for?
Why do people beg for money and push grocery carts around town?
Which is the most active volcano?
If a racquetball is one long strand of molecules, if you made a cut in the ball, wouldn't the whole ball fall apart?
Where does energy go when you try to push a heavy object and it doesn't move? Thermal energy isn't made, so why do people get tired?
Which is the oldest religion in the world still practiced?
Where do songbirds live?
My nose sometimes bleeds while I play sports or after practice. Why?
What is the "sound barrier"?
Can an earthquake be measured?
How do snakes eat if they do not have teeth?
What are fossils?
What causes a bruise?
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Myth about AIDS
Getting tested for HIV is pointless
Knowing if you are HIV positive will allow you to seek early treatment that can help you stay healthy longer and enable you not to pass on the virus to someone else. Regardless of your HIV status, you can learn how to prevent further infection from HIV and other STDs through counseling offered at many HIV testing centers.