PTT: Finish up last week's work
1) The top box of page 102 should be titled "Parallel Circuits."
2) You should have recorded a definition for Parallel Circuit on the top half of the page. Then draw 3 examples of parallel circuits (still on the top half of the page). This should have been completed as you did the online activity that takes you through 6 lessons of Electricity and Circuits.
3) Try another online activity where you have to identify and build circuits. Add examples to p. 101 if it's a series circuit and p. 102 if it's a parallel circuit.
Task 1: Review parallel and series circuits
1) Watch this video about parallel and series circuits: BBC Bitesize: Parallel and Series Circuits
2) While watching the video, write a few sentences explaining what current and voltage are on the bottom of page 102. Be sure to record the unit for each AND what sort of machine we use to measure them.
Task 2: Compare series and parallel circuits
1) Turn to p. 103
2) Title the page "Comparing Circuits"
3) Record the goal - Goal: I can explain the difference between series and parallel circuits.
4) Look back over your notes from pages 100-102. Be sure that you understand the difference between series and parallel circuits
5) Draw a Box and T graphic organizer on page 103 . See below for an example of what this should look like. Label the left side of the T-chart "Series Circuits" and the right side of the T-chart "Parallel Circuits."
6) Now that you've drawn your graphic organizer, use the information you've learned to fill it in. Record similarities between series and parallel circuits in the box. Record differences in the T-chart. Make sure the differences match up in the chart - for example, you could write that a "series circuit only has one path for current to flow" and match that on the other side of the chart with "a parallel circuit has more than one path for current to flow."
7) Show this chart to Ms. Davis when you are done - it will be a grade!
Task 3:
1) Click the link to open this online textbook in a different tab.
2) Find page 196 in the online textbook (you can click on Unit 4 for the electricity unit and then scroll to page 196)
3) Read pages 196-201. While you are reading, answer these questions on p. 104-105 in your science notebook. You must answer using COMPLETE sentences that use part of the question (example. Wires are like water pipes in a house because...)
Electric Circuits A. Explain how wires are like water pipes in a house. Explain the main difference between the two.
Current in a Circuit B. What is the differecnce between and open and closed circuit?
C. Why does current not 'leak out' of an electric current?
Electrical Power D. The amount of "power" depends on 2 things. What are they?
E. How do you calculate "power" in an electric circuit?
F. What voltage do plugs in a house normally have?
Resistance G. When resistance is low the current is ? (Hint: Think of a water flow or an army.) H. When resistance is _, the current is low.
I. How is resistance measured? What is the symbol?
Ohm's Law J. See the example and try the two practice questions.
Screen shot 2013-01-24 at 8.39.13 AM.png
Resistance of Common objects K. Why is it safe to touch a 9V battery but UNSAFE to touch a 120V wall socket in your house or classroom?
Closure:
In the diagram below, which circuit is a parallel circuit? Which circuit is a series circuit. Explain the difference.
Week 4, Day 2
PTT:
1) Turn to page 106 in your science notebook.
2) Title the page "Electrical Circuits Lab" and record the date (W4, D2)
3) Record the goal - "Goal: I can build working series and parallel circuits."
4) Set up the page as shown below.
Task 1: Electrical Circuit Labs
1) Gather all the materials you need for the lab. Remember to respect classroom materials and that you must use CAUTION when using batteries, wires and bulbs.
2) Complete Part A: Series Circuit with Multiple Loads (Remember: a series circuit is an electric circuit with ONE path)
a) Construct a circuit that has one cell, a switch, and one light bulb (hint: this is a simple circuit like we've built before...just with a switch)
b) Add a second light bulb in series to the first light bulb.
c) Add a third light bulb in series to the first two light bulbs,
d) Complete the observation table.
3) Complete Part B: Parallel Circuit with Multiple Loads (Remember: a parallel circuit is an electric circuit with MULTIPLE paths)
a) Construct a circuit that has one cell, a switch, and one light bulb (hint: this should be the same circuit you started with in part A)
b) Add a second light bulb in parallel to the first light bulb.
c) Add a third light bulb in parallel to the first two light bulbs,
d) Complete the observation table.
If you get stuck when designing your circuits, try out this circuit builder - it has an option to start from a template, and you can choose simple series or simple parallel circuit to help you get started.
Task2: Lab Analysis and Conclusions
1) Pick up the materials when you are done with the lab. Put them back in the bag/bucket to be used by the next class.
2) Return to your seat.
3) Title page 107: Lab Analysis and Conclusions and record the date (W4, D2)
4) Using the lab results (and other resources as needed), answer the following questions on p. 107 1. What will happen in a series circuit if one bulb burns out? Explain. (2)
Sentence starter: If a bulb in a series circuit burns out, then... 2. Resistance is a measure of how difficult it is for charges to flow through a material. The greater the resistance, the less current there is for a given voltage. How does resistance change as you add bulbs to a series circuit? (1)
Sentence starter: As you add bulbs to a series circuit... 3. What will happen in a parallel circuit if one bulb burns out? Explain. (2)
Sentence starter: If a bulb in a parallel circuit burns out, then... 4. Draw a schematic diagram of a circuit that includes one resistor (light bulb). The resistor is located between the switch and the positive terminal of the energy source. A switch is located between the resistor and the negative terminal of the energy source. (3)
NOTE: If you finish early, go back over pages 96-103 to make sure all pages are completed. You will need completed work to a) get a good notebook grade, b) have a good resource to study for the electricity test, and c) have a goo resource to study when it is time to prepare for the semester exam in May.
Closure:
1) Turn to page 87 (the unit cover page)
2) Using a different color for each circuit, draw and label a working series circuit with a bulb, cell, and switch, and then draw and label a working parallel circuit with 2 bulbs, a cell, and a switch.
3) Next to the type of circuit that is used in homes, draw a house and write "used in homes"
Week 4, Day 3
PTT:
1) Turn to page 87 (the unit cover page) to check if you did yesterday's closure.
2) Using a different color for each circuit, draw and label a working series circuit with a bulb, cell, and switch, and then draw and label a working parallel circuit with 2 bulbs, a cell, and a switch.
3) Next to the type of circuit that is used in homes, draw a house and write "used in homes"
4) Next, check whether you finished answering the 4 lab questions from task 2 yesterday. When you are finished with them, show your answers to me, as this will be a grade.
Task 1: Circuit Breakers and Fuses
1) Turn to page 108 in your science notebook.
2) Title the page "Circuit Breakers, Fuses, and Household Electricity"
3) Record the date "W4, D3" in the top corner of the page
4) Record the goal - "Goal: I can explain how electricity works in my home."
5) Divide the page into a top half and a bottom half
6) Google image search for a circuit breaker and fuse. Draw and label these images in your notes - use color to differentiate between them. (NOTE: the circuit breaker should look like a big box with switches)
7) Below each image, write a sentence that describes its function, aka what it is meant to do.
Task 2: Household Electricity Notes
1) Draw this chart below on p. 108 - it can take up the rest of the page with notes you collect through reading and the various activities you'll be doing today.
2) Go through the following pages from a variety of sites. Take some notes on the following topics in your chart.
Task 3:
1) Try this 'mains electricity activity". This is valuable common information that will help you better understanding of how electricity works in your home. This is valuable knowledge everyone should know,
2) Add any important notes into your chart.
Task 4:
1) Take the practice quiz to test your understanding. This is more to review. Some of these things won't be on the final test. The things you are responsible for are outlined in the chart above.
Closure:
How do you feel about your understanding of household electricity? Could you carry a conversation around the dinner table? Share with a partner all you know about how electricity works in your house. Discuss plugs, circuit breakers, and possible dangers.
Week 4, Day 4
PTT:
1) Open your notebook to page 109
2) Write the date in the top corner: W4, D4
3) Record the title - "Household Electricity"
4) Record the goal - Goal: I can explain how electricity works in my house.
5) When done, move on to task 1.
Task 1:
1) Try this 'mains electricity activity". This is valuable common information that will help you better understanding of how electricity works in your home. This is valuable knowledge everyone should know,
2) Add any important notes into your chart.
3) Check that you've got the following information (can be said different in different words, but you need to have the general ideas recorded).
- AC Current: alternating current - current changes directions constantly
In Mexico: 127 V at 60 Hz
This is the MAINS electricity (houses and buildings)
- DC Current: direct current - only one direction
In batteries
- Plugs: case of plastic (insulator); 3 brass pins to conduct electricity; fuse between live terminal and live wire (melts if there's too much current)
- Plug Wires: 3 types -
Live (the current goes through this): black (and sometimes red too);
neutral (current returns out of the house): white Earth/ground (so electricity goes into ground and not you if there's a problem): green
- Circuit Breaker: meant to "trip" or turn things off if there's too much current or a short circuit (electricity traveling the wrong way); can go down to the box and turn it back on after you fix the problem
- Fuse: melts and turns things off if there's too much current or a short circuit; these need to be replaced after they melt
Task 2:
1) Take the practice quiz to test your understanding. This is more to review. Some of these things won't be on the final test. The things you are responsible for are outlined in the chart above.
Task 3:
1) Click the link to open this online textbook in a different tab.
2) Scroll to find page 212.
3) Read pages 212-213.
4) Answer the questions using complete sentences on p. 109 in your science notebook.
Closure:
How do you feel about your understanding of household electricity? Could you carry a conversation around the dinner table? Share with a partner all you know about how electricity works in your house. Discuss plugs, circuit breakers, and possible dangers.
Week 4, Day 1
PTT: Finish up last week's work
1) The top box of page 102 should be titled "Parallel Circuits."
2) You should have recorded a definition for Parallel Circuit on the top half of the page. Then draw 3 examples of parallel circuits (still on the top half of the page). This should have been completed as you did the online activity that takes you through 6 lessons of Electricity and Circuits.
3) Try another online activity where you have to identify and build circuits. Add examples to p. 101 if it's a series circuit and p. 102 if it's a parallel circuit.
Task 1: Review parallel and series circuits
1) Watch this video about parallel and series circuits: BBC Bitesize: Parallel and Series Circuits
2) While watching the video, write a few sentences explaining what current and voltage are on the bottom of page 102. Be sure to record the unit for each AND what sort of machine we use to measure them.
Task 2: Compare series and parallel circuits
1) Turn to p. 103
2) Title the page "Comparing Circuits"
3) Record the goal - Goal: I can explain the difference between series and parallel circuits.
4) Look back over your notes from pages 100-102. Be sure that you understand the difference between series and parallel circuits
5) Draw a Box and T graphic organizer on page 103 . See below for an example of what this should look like. Label the left side of the T-chart "Series Circuits" and the right side of the T-chart "Parallel Circuits."
6) Now that you've drawn your graphic organizer, use the information you've learned to fill it in. Record similarities between series and parallel circuits in the box. Record differences in the T-chart. Make sure the differences match up in the chart - for example, you could write that a "series circuit only has one path for current to flow" and match that on the other side of the chart with "a parallel circuit has more than one path for current to flow."
7) Show this chart to Ms. Davis when you are done - it will be a grade!
Task 3:
1) Click the link to open this online textbook in a different tab.
2) Find page 196 in the online textbook (you can click on Unit 4 for the electricity unit and then scroll to page 196)
3) Read pages 196-201. While you are reading, answer these questions on p. 104-105 in your science notebook. You must answer using COMPLETE sentences that use part of the question (example. Wires are like water pipes in a house because...)
Electric Circuits
A. Explain how wires are like water pipes in a house. Explain the main difference between the two.
B. What is the differecnce between and open and closed circuit?
C. Why does current not 'leak out' of an electric current?
D. The amount of "power" depends on 2 things. What are they?
E. How do you calculate "power" in an electric circuit?
F. What voltage do plugs in a house normally have?
G. When resistance is low the current is ? (Hint: Think of a water flow or an army.)
H. When resistance is _, the current is low.
I. How is resistance measured? What is the symbol?
J. See the example and try the two practice questions.
K. Why is it safe to touch a 9V battery but UNSAFE to touch a 120V wall socket in your house or classroom?
Closure:
In the diagram below, which circuit is a parallel circuit? Which circuit is a series circuit. Explain the difference.
Week 4, Day 2
PTT:
1) Turn to page 106 in your science notebook.
2) Title the page "Electrical Circuits Lab" and record the date (W4, D2)
3) Record the goal - "Goal: I can build working series and parallel circuits."
4) Set up the page as shown below.
Task 1: Electrical Circuit Labs
1) Gather all the materials you need for the lab. Remember to respect classroom materials and that you must use CAUTION when using batteries, wires and bulbs.
2) Complete Part A: Series Circuit with Multiple Loads (Remember: a series circuit is an electric circuit with ONE path)
a) Construct a circuit that has one cell, a switch, and one light bulb (hint: this is a simple circuit like we've built before...just with a switch)
b) Add a second light bulb in series to the first light bulb.
c) Add a third light bulb in series to the first two light bulbs,
d) Complete the observation table.
3) Complete Part B: Parallel Circuit with Multiple Loads (Remember: a parallel circuit is an electric circuit with MULTIPLE paths)
a) Construct a circuit that has one cell, a switch, and one light bulb (hint: this should be the same circuit you started with in part A)
b) Add a second light bulb in parallel to the first light bulb.
c) Add a third light bulb in parallel to the first two light bulbs,
d) Complete the observation table.
If you get stuck when designing your circuits, try out this circuit builder - it has an option to start from a template, and you can choose simple series or simple parallel circuit to help you get started.
Task 2: Lab Analysis and Conclusions
1) Pick up the materials when you are done with the lab. Put them back in the bag/bucket to be used by the next class.
2) Return to your seat.
3) Title page 107: Lab Analysis and Conclusions and record the date (W4, D2)
4) Using the lab results (and other resources as needed), answer the following questions on p. 107
1. What will happen in a series circuit if one bulb burns out? Explain. (2)
Sentence starter: If a bulb in a series circuit burns out, then...
2. Resistance is a measure of how difficult it is for charges to flow through a material. The greater the resistance, the less current there is for a given voltage. How does resistance change as you add bulbs to a series circuit? (1)
Sentence starter: As you add bulbs to a series circuit...
3. What will happen in a parallel circuit if one bulb burns out? Explain. (2)
Sentence starter: If a bulb in a parallel circuit burns out, then...
4. Draw a schematic diagram of a circuit that includes one resistor (light bulb). The resistor is located between the switch and the positive terminal of the energy source. A switch is located between the resistor and the negative terminal of the energy source. (3)
NOTE: If you finish early, go back over pages 96-103 to make sure all pages are completed. You will need completed work to a) get a good notebook grade, b) have a good resource to study for the electricity test, and c) have a goo resource to study when it is time to prepare for the semester exam in May.
Closure:
1) Turn to page 87 (the unit cover page)
2) Using a different color for each circuit, draw and label a working series circuit with a bulb, cell, and switch, and then draw and label a working parallel circuit with 2 bulbs, a cell, and a switch.
3) Next to the type of circuit that is used in homes, draw a house and write "used in homes"
Week 4, Day 3
PTT:
1) Turn to page 87 (the unit cover page) to check if you did yesterday's closure.
2) Using a different color for each circuit, draw and label a working series circuit with a bulb, cell, and switch, and then draw and label a working parallel circuit with 2 bulbs, a cell, and a switch.
3) Next to the type of circuit that is used in homes, draw a house and write "used in homes"
4) Next, check whether you finished answering the 4 lab questions from task 2 yesterday. When you are finished with them, show your answers to me, as this will be a grade.
Task 1: Circuit Breakers and Fuses
1) Turn to page 108 in your science notebook.
2) Title the page "Circuit Breakers, Fuses, and Household Electricity"
3) Record the date "W4, D3" in the top corner of the page
4) Record the goal - "Goal: I can explain how electricity works in my home."
5) Divide the page into a top half and a bottom half
6) Google image search for a circuit breaker and fuse. Draw and label these images in your notes - use color to differentiate between them. (NOTE: the circuit breaker should look like a big box with switches)
7) Below each image, write a sentence that describes its function, aka what it is meant to do.
Task 2: Household Electricity Notes
1) Draw this chart below on p. 108 - it can take up the rest of the page with notes you collect through reading and the various activities you'll be doing today.
2) Go through the following pages from a variety of sites. Take some notes on the following topics in your chart.
- Alternating current and direct current
- Plugs and plug wires - click here so you can record the standard wire colors for the USA (live, neutral, ground)
- Circuit breakers (also here for more about circuit breakers) and fuses
Task 3:1) Try this 'mains electricity activity". This is valuable common information that will help you better understanding of how electricity works in your home. This is valuable knowledge everyone should know,
2) Add any important notes into your chart.
Task 4:
1) Take the practice quiz to test your understanding. This is more to review. Some of these things won't be on the final test. The things you are responsible for are outlined in the chart above.
Closure:
How do you feel about your understanding of household electricity? Could you carry a conversation around the dinner table? Share with a partner all you know about how electricity works in your house. Discuss plugs, circuit breakers, and possible dangers.
Week 4, Day 4
PTT:
1) Open your notebook to page 109
2) Write the date in the top corner: W4, D4
3) Record the title - "Household Electricity"
4) Record the goal - Goal: I can explain how electricity works in my house.
5) When done, move on to task 1.
Task 1:
1) Try this 'mains electricity activity". This is valuable common information that will help you better understanding of how electricity works in your home. This is valuable knowledge everyone should know,
2) Add any important notes into your chart.
3) Check that you've got the following information (can be said different in different words, but you need to have the general ideas recorded).
- AC Current: alternating current - current changes directions constantly
In Mexico: 127 V at 60 Hz
This is the MAINS electricity (houses and buildings)
- DC Current: direct current - only one direction
In batteries
- Plugs: case of plastic (insulator); 3 brass pins to conduct electricity; fuse between live terminal and live wire (melts if there's too much current)
- Plug Wires: 3 types -
Live (the current goes through this): black (and sometimes red too);
neutral (current returns out of the house): white
Earth/ground (so electricity goes into ground and not you if there's a problem): green
- Circuit Breaker: meant to "trip" or turn things off if there's too much current or a short circuit (electricity traveling the wrong way); can go down to the box and turn it back on after you fix the problem
- Fuse: melts and turns things off if there's too much current or a short circuit; these need to be replaced after they melt
Task 2:
1) Take the practice quiz to test your understanding. This is more to review. Some of these things won't be on the final test. The things you are responsible for are outlined in the chart above.
Task 3:
1) Click the link to open this online textbook in a different tab.
2) Scroll to find page 212.
3) Read pages 212-213.
4) Answer the questions using complete sentences on p. 109 in your science notebook.
Closure:
How do you feel about your understanding of household electricity? Could you carry a conversation around the dinner table? Share with a partner all you know about how electricity works in your house. Discuss plugs, circuit breakers, and possible dangers.