3. EQ: What is an electric circuit? (p. 317)
ANSWER:
An electric circuit is a complete, closed path
through which electric charges flow.
4. EQ: What are the 3 essential parts of a circuit?
ANSWER:
Energy Source
Definition:
Examples (3):
Load
Definition:
Examples (3):
5. EQ: How are series and parallel circuits similar
and different?
Series Parallel
6. EQ: What factors affect the amount of electric
current through a circuit?
Voltage (p. 307)
Definition:
More info:
Resistance (p. 308-309)
Definition:
More info:
7. A
D
C B
Challenge: How would the other bulbs be
affected if bulb one of the bulbs burned out?
1. If bulb A burned out…
2. If bulb B burned out…
3. If bulb C burned out…
4. If bulb D burned out…
8. EQ: What happens when there is too
much electric current moving through
a circuit? (p. 320-321)
• Too much current can cause wires to heat up, melt,
and start fires.
• Fuse – when the current gets too high, a strip of metal
melts and breaks the circuit.
• Circuit breaker – A switch that opens if the current is too
high. A strip of metal heats up and bends, opening the
circuit.
9. Circuit breaker – A switch that opens if the current is
too high. A strip of metal heats up and bends,
opening the circuit.
17. – What happens to the charge of an object that
loses electrons?
– What happens to the charge of an object that
gains electrons?
– What happens to the charge of an object that
gains protons?
18. – An atom has 26 protons and 23 electrons.
What is its overall charge?
– Another atom has 47 protons and 52 electrons.
What is its overall charge?
– Will these atoms attract or repel each other?
19. – If you rub a metal rod with a piece of silk, the rod
becomes negatively charged. This means that
the silk must be…
– What is the difference between static and
current electricity?
20. Suppose you have four bulbs in a series
circuit. If you were to add five more bulbs in
series with these four, what would happen to
the brightness of the bulbs?
21. Suppose you have four bulbs in a parallel
circuit. If you were to add five more bulbs in
parallel with these four, what would happen
to the brightness of the bulbs?
22. 1. Why are loads necessary in a circuit?
2. What happens when there are too many
loads in a parallel circuit?
23. – In your own words, describe how electricity is produced at a
power plant.