Transcript AIM: OBJ: DN: HW - Hicksville Public Schools / Homepage

OBJ: Given images, notes and activity sheet SWBAT explain
how a battery works and the difference between a wet cell and
dry cell battery with 70% accuracy.
DN: HW check- Electric Current Booklet
How A Car Battery Works https://www.youtube.com/watch?v=4IgHj2Uim_0
Lemon Battery
https://www.youtube.com/watch?v=XtHt00AN0pU
ACT: Introduction to: battery parts, a wet cell and a dry cell
battery, instruments that measure electricity.
**Read Battery Handout, Complete Battery Activity Sheet
(front & back page)
HW: Text, read p. 55-57; Complete Batteries Booklet; Read
Midterm Review #2 Answer Key; Midterm Prep Quiz#1,
tomorrow; Interim Exam, Jan 22; EM Exam, Jan 29.
Battery Parts
• Electrode: metal strip that collects electric
charges.
• Electrolyte (acid): a liquid or paste that
conducts electricity.
• Terminal / Pole: end of an electrode
Wet Cell Battery
• Contains copper + and zinc – electrodes
• Liquid electrolyte (sulfuric or nitric acid)
• Example: car, motorcycle, boat battery
Wet Cell Works:
Zinc electrode and acid electrolyte chemical
reaction
Electrons collect on zinc electrode Copper electrode becomes +
Connecting wire to terminals, electrons move from
negative to positive
Wet Cell
Wet Cell Battery
Wet Cell Car Battery
Dry Cell Battery
• Contains carbon + and zinc – electrodes
• Solid, paste electrolyte
• Example: flashlight (C, D cell); radio, toy (AA,
AAA cell)
Dry Cell Works:
Outer case zinc electrode and inside paste acid
electrolyte chemical reaction
Electrons collect on zinc electrode
Central carbon (rod) electrode becomes +
Connecting wire to terminals, electrons move from
zinc (–) case to carbon rod (+)
Dry Cell Battery
+
-
Dry Cell Battery
Lantern Battery
9 volt battery
D
C
AA AAA
Instruments Used to Measure Electricity
• Galvanometer (Ammeter): used to
measure electric current rate.
• Voltmeter: used to measure voltage
(pushing force)