Blobz Guide to Electric Circuits



Seat #___ Name ___________ Blobz Guide to Electric Circuits pg 48



Section 1: What Makes Circuits Work

Information

1. Circuits need to be complete for them to __________

2. The wires must make a loop from ________________ and _________________

3. If the circuit is not complete, it __________________

4. Why will incomplete circuits not work? _______________________________________

5. Power sources are __________________________ or ________________________

6. Batteries are ______________ and Wall sockets are __________________

7. Which source is more powerful? _________________

8. How do you arrange cells in a circuit? ____________

Activity

1. How many circuits worked? ____________________

2. How many circuits didn’t work? _________________

Quiz

1. Which does a circuit need so that it can work properly? _____________________

2. If a circuit is not complete, what happens? ______________________________

3. What do cells do in a circuit? ____________________________________

4. Will this bulb light up? _____________

5. Why do circuits need to be complete? _____________________________________

Section 2: Conductors and Insulators

Information

1. What is a conductor? _________________________

2. Give an example of a conductor _________________

3. What is an insulator? _________________________

4. Give two examples of insulators __________________________________________

5. Why do some wires have a plastic coating? _________________________________

6. Most conductors are _________________________

Activity

Which items were conductors? ___________________________________________ ____________________________________________________________________

1. Which items were insulators? ____________________________________________ ____________________________________________________________________

Quiz

1. What name is given to materials that do not allow electricity to pass through them? __________________________________________________________________

2. Which of these pairs of materials DO conduct electricity? _____________ ____________________________________________________________________________

3. Which of these is an example of a good conductor? ______________________

4. Why are electric wires often covered in plastic? __________________________

5. How many of these items will conduct electricity? ____________________

Section 3: All About Switches

Information

1. Why is a circuit with a bulb and cell not very useful? ________________________

2. Why do we have switches? ____________________________________

3. What do switches do? ____________________________________

4. When the switch is off the circuit is _______________________________________

5. What are two types of switches? ____________________________________

6. What are the switches on a calculator? ___________________________________

Activity

1. Which items have no switches ___________________________________________

2. Which items have 1 switch ___________________________________________

3. Which items have many switches ___________________________________________

Quiz

1. Which item does not contain a switch? _________________________________

2. When a switch is closed it means ___________________________________________

3. What happens if we turn on switch ‘a’? _______________________________

4. When a circuit is broken by a switch, what does this mean? __________________

5. What do we call this type of switch? __________________________

Section 4: Changing Circuits

Information

1. What two ways change this circuit? ____________________________________

2. Why would added bulbs be dimmer? ____________________________________

3. Why would added batteries make the bulbs brighter? _______________________

4. What would happen if you add too many cells? ___________________________

5. How else could you change the circuit? _________________________________

6. What happens to the bulb with a longer wire? ____________________________

7. What happens to the bulb with a shorter wire? ____________________________

Quiz

1. If we add more bulbs to a circuit, what happens to the bulbs? _______________

2. Which would make the bulbs get brighter? ______________________________

3. As it becomes more difficult for electricity to travel around a circuit, we say there is more _______________________

4. What happens if we add too many cells to a circuit? ________________________

5. If we shorten the resistance wire in a circuit, the bulbs will get _______________

Activity

Fill in the Data Table:

|Action |Bulb Brightness |

| |(Check appropriate Box) |

Battery |Bulb |Wire |Blown Out |Dim |Normal |Very Bright | |1 |1 |Short | | | | | |2 |1 |Short | | | | | |4 |1 |Short | | | | | |1 |2 |Short | | | | | |2 |2 |Short | | | | | |4 |2 |Short | | | | | |1 |4 |Short | | | | | |2 |4 |Short | | | | | |4 |4 |Short | | | | | |1 |1 |Long | | | | | |2 |1 |Long | | | | | |4 |1 |Long | | | | | |1 |2 |Long | | | | | |2 |2 |Long | | | | | |4 |2 |Long | | | | | |1 |4 |Long | | | | | |2 |4 |Long | | | | | |4 |4 |Long | | | | | |

Section 5: Circuit Diagrams

Information

1. What are used to represent different components in a circuit? ________________

2. How can everyone read the circuit diagram and understand it? ________________________________________________________________

3. Can you represent ANY circuit with a diagram? _____________

4. Draw the following symbols:

a. Bulb

b. Cell

c. Switch

d. Buzzer

e. Motor

5. What can you do with a circuit diagram? _______________________________

Activity

1. Line up the name with the correct picture and symbol. When you have finished it have the student next to you check your work and sign their name on this line. _________________________________________________________

Quiz

1. What do we call the different parts that make a circuit? ____________________

2. Which of these symbols is the buzzer? _______________

3. What does this symbol represent? ________________________

4. Which component is grouped with its symbol? ___________________

5. What do these two symbols represent? ____________________

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