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Electricity in our atmosphere
ISS flyover Earth
What is Static Electricity?
Where does static charge come from?
Around the outside of an atom are electrons, which have a negative charge.
The nucleus at the centre of an atom contains protons which have a positive charge.
An atom has equal amounts of negative and positive charges which cancel each other out. This means an atom has no overall charge.
Electrons do not always stay attached to atoms and can sometimes be removed by rubbing.In the air in your classroom there are about 1500000000000000000000000000 atoms.
electron (negative charge)
proton (positive charge)
What is Static Electricity?
Electric Charge: an uneven buildup of electrons..
What is Static Electricity?
How to make an electric charge?-electrons can be added or removed from
atoms fairly easily
What is Static Electricity?
How to make an electric charge?-electrons can be added or removed from
atoms fairly easilyRemove electrons: substance becomes
positive
What is Static Electricity?
Electric Charge: a negative or positive charge that exerts an electric force.
How to make an electric charge?-electrons can be added or removed from
atoms fairly easilyRemove electrons: substance becomes
positiveAdd electrons: substance becomes
negative
What is Static Electricity?
We don't draw atoms, just "+" and "–" to illustrate the overall charges
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What is Static Electricity?
We don't draw atoms, just "+" and "–" to illustrate the overall charges
e.g. a neutral object
5 +5 -
overall charge 0
What is Static Electricity?
We don't draw atoms, just "+" and "–" to illustrate the overall charges
e.g. a positive object
5 +3 -
overall charge 2+
What is Static Electricity?
We don't draw atoms, just "+" and "–" to illustrate the overall charges
e.g. a negative object
5 +8 -
overall charge 3 -
What is Static Electricity?
Static Electricity: an imbalance of electric charge on the surface of an object; stationary electric charge
John Travoltage in action
What is Static Electricity?
Law of Electric Charges:
What is Static Electricity?
Law of Electric Charges:1. Opposite charges attract
What is Static Electricity?
Law of Electric Charges:1. Opposite charges attract2. Like charges repel
What is Static Electricity?
Law of Electric Charges:1. Opposite charges attract2. Like charges repel3. Charged objects attract neutral objects
How does our atmosphere buildup unbalanced electric charge?
Interesting facts
• Lightning bolts can travel at speeds of up to 60,000 miles per second.
• Every second around 100 bolts of lightning strike the Earth.
• One lightning bolt has enough electricity to power 200,000 homes.
• You are more likely to be struck by lightning than be eaten by a shark.
Work with lightning
• Make lightning strike interactive (National Geo)
• Lightning/thunder interactive
