Science Facts

Science Facts
Decibel – Decibel is a unit of
measurement for sound, it
measures the loudness or volume
of the sound waves.
Density -Density is the ratio of the
mass of a body to its volume,
usually expressed as its specific
gravity.
Dynamo – Dynamo is a device that
creates electricity by turning
around a magnet near a coil of
wire.
Electrolysis – Electrolysis is splitting
a substance into the separate
chemicals that make it up, by
passing an electric current through
it.
Electrons – Electron is a negatively
charged subatomic particle.
Electrons are found at varying
distances from a atom’s nucleus.
They make up almost the entire
volume of a atom but only account
for a small part of the atom’s mass.
Compare to protons.
Element – Element is a basic
chemical substance in which all the
atoms are the same, and different
from the atoms of any other
substance.
Energy – Energy is the name given
to the ability to do work.
Freezing Point – Freezing Point is
the temperature at which a liquid
becomes a solid.
Friction – Friction is the resistance
that occurs when two objects rub
together.
Gravity – Gravity is the attractive
central gravitational force exerted
by a celestial body such as earth.
Humidity – Humidity is the amount
of water vapor in the air.