Download Unit 7: Electricity and Magnetism

S8P5. Students will recognize characteristics of gravity,
electricity, and magnetism as major kinds of forces
acting in nature.
Good Morning!

Come on in and design a cover page to
Unit 7: Electricity and Magnetism.
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Make colorful and creative!!!
Electricity
S8P5. Students will recognize
characteristics of gravity, electricity, and
magnetism as major kinds of forces
acting in nature.
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EQ: What is electricity?
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Answer: (skip 3 lines)
Learning Goals
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LG2: I will demonstrate the advantages and
disadvantages of electricity, describe the difference
between series and parallel circuits, and explain
magnetic force.
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LG3: I will demonstrate the advantages and
disadvantages of electricity while connecting to realworld situations, describe the difference between
series and parallel circuits, and explain magnetic
force.
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LG4: I will demonstrate the advantages and
disadvantages of electricity while connecting to realworld situations, explain the difference between
series and parallel circuits, and explain magnetic
force.
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Electric charges are from protons which
are positive and electrons which are
negative.
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Atoms become charged by gaining or
losing electrons.
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Static Electricity – the accumulation of
excess electric charges on an object.
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Law of Conservation of Charge –
electric charges can be transferred from
object to object but it cannot be created
or destroyed.
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Positive and negative charges exert forces on
each other.
Opposite charges
Attract
Like charges
repel
Conductors vs. Insulators
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Conductors –
material in which
electrons move
easily.
 Ex. Metals
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Insulators – material
in which electrons
are not able to move
easily
 Ex. Wood, plastic,
rubber.
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Electric force – is the attraction or
repulsion between electric charges.
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Electric field – is a region around a
charged object where the object’s
electric force is exerted on other
charged objects.
Charging Objects
Charging by conduction – process of
transferring charge by touching.
Charging by induction – rearrangement of
electrons on a neutral object caused by
nearby charged objects.
Charging by friction – is the transfer of
electrons from one uncharged object to
another by rubbing.
Static Discharge
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EQ: What is an example of static
electricity?
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Answer:
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Static electricity – charges build up on
an object, but they do not flow
continuously.
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Static discharge – The loss of static
electricity as electric charges transfer
from one object to another.
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When a negatively charged object and a
positively charged object are brought
together, electrons transfer until both
objects have the same charge.
 Ex. When people shock you
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Lightning is a dramatic example of static
discharge.
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Lightning Foldable!
1.
Raindrops and ice crystals collide
inside storm clouds creating electrical
charges.
2. Electrical charges separate inside the
cloud with electrons moving to bottom of
the cloud and protons moving to the top.
3. Negative charges at the bottom of the
cloud force positive charges to build up
on the ground forming a large electric
field.
4. Step leaders snake down from the cloud
while streamers surge up from the
ground, then –zap- lightning strikes!