Lesson 7 quick check and guide 2012 Yanisch.notebook
March 15, 2012
Lesson 7 quick check and guide 2012 Yanisch.notebook
March 15, 2012
Lesson 7 quick check and guide 2012 Yanisch.notebook
March 15, 2012
Lesson 7 quick check and guide 2012 Yanisch.notebook
Batteries in PARALLEL
March 15, 2012
Lesson 7 quick check and guide 2012 Yanisch.notebook
March 15, 2012
Week 0
3/15/12
DUE: 1. Complete CC process ASAP
2.Create question areas, and start writing questions
Out:
Book p. Notebook­Open to Inq 7
Plans for Activity Day?
HW: Inq 7 packet, if necessary
Write CC Interview Questions­Each person MUST add at least 2 questions tonight
Lesson 7 quick check and guide 2012 Yanisch.notebook
Lesson 7.1
2A. Draw a compound series
battery with 2 batteries
Voltage: ________
B. Draw a compound parallel
battery with 2 batteries
Voltage: ________
March 15, 2012
C. Draw a compound series
battery with 3 batteries
Voltage: ________
D. Draw a compound parallel
battery with 3 batteries
Voltage: ________
***Circle the compound battery (out of all 4 above) that would have the highest voltage reading
5. What pattern do you see when batteries are connected IN SERIES?
When the batteries are connected in series, the voltage adds together What pattern do you see when batteries are connected IN PARALLEL?
When the batteries are connected in parallel, the voltage stays the same, Lesson 7 quick check and guide 2012 Yanisch.notebook
Lesson 7.2
Each Battery has 1.25 volts
March 15, 2012
Parallel Compound Batteries
Sketches of circuits you built below
Series Compound Batteries
5E. Analyze the data collected. What can you conclude about how the ARRANGEMENT of batteries affects brightness:
Arrangement of the batteries makes a difference! When in series, changing the number of batteries changes the brightness
When in parallel, the brightness is unchanged even with more batteries
What can you conclude about how the NUMBER of batteries affects brightness:
When in series, more batteries make the bulb brighter.
When in parallel, the brightness is unchanged even with more batteries
Lesson 7 quick check and guide 2012 Yanisch.notebook
Parallel Compound Batteries
March 15, 2012
Lesson 7.3
A. What happens if you take out any one of the 3 batteries, out of its holder in a parallel compound battery, when in a circuit? (schematic to left)
Voltage stays the same
Brightness stays same
B. How do you explain what happened?
There is still a complete circuit from ­ to +
e­ can come from either battery to either battery, so voltage & brightness unchanged
Series Compound Batteries
A. What happens if you take out any one of the 3 batteries, out of its holder in a series compound battery, when in a circuit? (schematic to left)
Removing any of the batteries turns off the light
B. How do you explain what happened?
Removing the battery meant that the e­ did not have a path from the ­ to the + so the circuit is open
Wrap­Up questions for Lesson 7: Compound Batteries
1. Which type of compound battery will produce a larger voltage reading (circle one of the following) Series
or Parallel?
2. When observing the brightness of a light bulb and the voltage reading for a circuit, how do the two relate? (circle one below)
A. They don't relate to one another at all
B. When the voltage goes up, the light bulb gets dimmer
C. When the voltage goes up, the light bulb gets brighter
D. When the voltage goes up, the light bulb remains unchanged
3. What are the advantages & disadvantages of using a series or parallel compound battery?
Series Advantage: higher voltage­stronger push­brighter, etc.
Series Disadvantage: Batteries used up quicker; 1 dead battery = dead circuit
Parallel Advantage: Longer battery life; 1 dead battery not stop circuit
Parallel Disadvantage: Lower voltage
4. Write a definition of voltage below (in your own words, based off of what you learned in this lesson)
Did you connect voltage to pressure or strength of the push on the e­ ?
Lesson 7 quick check and guide 2012 Yanisch.notebook
March 15, 2012
Reflection Questions:
A. In the series arrangement, we saw the voltage increase, and the light get brighter, as we added batteries.
B. In series, you connected the positive to one battery to the negative in the next.
In Parallel, you connected positive in one battery to the positive in the next
C. Series Advantages: You get higher voltage, providing more energy for the circuit. Series Disadvantage: Using more energy burns out the battery sooner
Parallel Advantage: The batteries will last longer
Parallel Disadvantage: You will have a lower voltage­less energy for the circuit
D. The 6 batteries are connected in series
Lesson 7 quick check and guide 2012 Yanisch.notebook
March 15, 2012
E. When adding batteries in series, the fan would spin faster
When adding batteries in parallel, the fan would stay on longer before the batteries wore out
F. The water model's pump is like the battery
The pressure of the water is like the voltage
The spinning wheel is like the lightbulb