Day 90

WARM-UP (10 minutes)

Today we will be using a light bulb, wire, and battery to create successful and unsuccessful circuits. To best understand why some setups work, and others don't, draw & label three anatomy diagrams; wire, bulb, battery.

(this is your ticket to today's inquiry activity)

Here are some key vocab terms you should use: (BULB: glass, inert gas, wire or filament, metal bump, metal screw part, metal base, black belt, WIRE: wire, insulation. BATTERY: cathode, anode, electrolyte, separator, positive terminal, negative terminal)

CLASSWORK

090A: Creating a Circuit (part 1)

• You can work by yourself, or with one partner.
• You'll get a single wire, 1.5V bulb, and 1.5V AA battery.
• Your job: discover at least four different ways to complete a circuit
• Procedure:
• 1. Predict a configuration of the materials that you think might light the bulb. (need ideas? LINK)
• 2. Test your configuration.
• 3. Using the Observation Form (see board), record a diagram of your prediction and whether or not the bulb lit.
• 4. Make and record other quantitative and qualitative observations (AKA, say why it .
• 5. Repeat steps 1–4 until you have identified at least 4 different ways the bulb will light and 6 different ways the bulb will not light.

090B: Creating a More Advanced Circuit (part 2)

• RULE: ONLY USE ONE BATTERY
• You will now combine materials with another person/group. That means you can use two bulbs, and up to two wires, but ONLY ONE BATTERY (more could overload the bulb, just like the LED yesterday, and I don't have any extra bulbs).
• just like in #090A, create three configurations that light BOTH BULBS. Diagram them, as well as three configurations which don't work, and make observations.

HOMEWORK:

What is current? How can we calculate the current flow through a wire? All will be answered.....in the 1st Flipping Physics video ever :-)

----->LINK

Questions:

1. Define "current"

2. Which of the following flows in wires? Proton, Electron, Neutron?

3. What is the direction "conventional current" would flow?

4. Copy the image of the Bohr Model of the atom. Where are the electron shells?

5. What's actually flowing, positive or negative charges?

6. So, again, which way does current flow?

7. Energy gets transmitted from a power plant to our homes/school via AC, but most of our devices use a transformer to convert to DC. Why?

8. Solve the current problem ("A") along with Mr. P

9. In the equation, Q=ne what do each of the variables (letters) stand for?

10. Solve for the number of electrons flowing through the wire

11. is that a lot of electrons?