Electricity Static Electricity Part 1 What are electric
- Slides: 20
Electricity Static Electricity: Part 1
What are electric charges? u All matter is made of ________ atoms u Atoms are made of 3 subatomic particles Protons u __________ = positive charges in the nucleus Neutrons u __________ = neutral charges in the nucleus Electrons u __________ = negative charges spinning around the nucleus
What are electric charges? Electrons Protons Neutrons
What are electric charges? u Although electrons spin very quickly they don’t fly off u The protons hold them in place attracted to u Positive charges are _____ negative charges
What are electric charges? u Similar to the sun and the earth u Earth spins around the sun very quickly u We don’t fly off into space because the sun’s gravity pulls us in protons u The sun = _________ and electrons u the earth = ________
What is an electric force? u Electricity = the interaction between electric charges u Electric force = the specific type of interaction between charges Attract u ______ = when charges move toward one another. u _____ = when charges move away Repel from one another
What is an electric force? u The type of electric force depends on the electric _____ surrounding each field charge involved. u An invisible region surrounding a charge in which it exerts its electric force u When another charge enters this field, it is either attracted by or repelled by the first charge
DRAW THE CHARGE & ELECTRIC FIELD! u Single protons:
DRAW THE CHARGE & ELECTRIC FIELD! u Single electrons:
DRAW THE CHARGE & ELECTRIC FIELD! u Two protons: Repel
DRAW THE CHARGE & ELECTRIC FIELD! u Two electrons: Repel
DRAW THE CHARGE & ELECTRIC FIELD! u A proton and an electron: Attract
What is an electric force? Combination of Charges Type of force created Proton and Proton Repel Electron and Electron Repel Proton and Electron Attract *Opposites Attract*
What is static electricity? u Under normal conditions: Equal numbers of u Atoms have _______ protons and electrons u Atoms are electrically ________ neutral u Objects made of neutral are also electrically neutral do not u Neutral objects _______ experience electric forces.
What is an electric force? u We can change the electric charge of objects u Atoms hold their protons _______ tightly u Atoms hold their electrons ______ loosely
What is an electric force? u When objects slide past one another or come in contact, electrons can transfer between them u The object that gains electrons becomes negative ______ u The object that loses electrons becomes ______ positive u They may then exert electric forces.
What is an electric force? u This leads to static electricity = a buildup of flow electrical charges that do not constantly ___
What is an electric force? Charge is _____ 0 Charge is ______ 0
What is an electric force? _____ Lost 4 electrons Gained ______ 4 electrons Charge is now ___ -4 +4 attract They will ______ one another