STATIC ELECTRICITY. What is static electricity? How does it is generated?
Static electricity U6L2 Notes
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Static ElectricityOCS Applied Science
Static Electricity
The build-up of electric charge in one place
OCS Applied ScienceU6 L22
Atoms All matter is made of atoms Atoms are too small to be seen
with our eyes Parts of atom
Protons – have positive charge Neutrons – have NO charge Electrons – have negative
charge
OCS Applied Science
Location of Parts Nucleus
Protons and Neutrons Outside Nucleus
Electrons
What creates Static Electricity? Static electricity is created when the
positive and negative charges are not balanced
Most of the time , atoms have the same number of positive and negative charges so they are neutral, meaning they are not positive or negative.
This atom has
6 protons and
6 electrons, so
it is neutral
Moving Electrons = charge Since the protons and the neutrons are
in the nucleus, they do not move around too much
The electrons jump all over the place
Static shock! As you walk across the carpet, electric
charge builds up on your body. When you shuffle your feet you pick up electrons from the carpet
When you reach for a doorknob, the charge is released.
This causes you to get shocked
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How this works Opposite charges attract
The negatively charged electrons want to move to the positively charged door
Like charges repel So electrons want to move away
from each other
Static Electricity and Winter You see more static charge in the winter
since the air is dry Example
Hair sticking up after taking off a hat Hair builds up negative charge Negatives repel
Static Electricity
Electrical charge can be given off in the form of sparks
Static cling is the build-up of static electricity in materials like clothing.
Lightning is caused by the buildup of charges between the clouds and ground. Electrons build up in clouds and
jump to the ground, causing a spark
April 12, 202311
Safety Tips Static electricity can
be dangerous Never get back into
your car while pumping gas
Don’t use your cell phone when pumping gas You could build up
charge and create a spark
Sparks can cause gasoline to catch on fire!
Safety tips Stay inside during
thunderstorms if possible (thunder is the sound
of lightning) Avoid contact with
metal Avoid water If you are outside,
seek low lying areas away from trees
April 12, 202314