Read and interpret electrical signs, symbols and data Appreciate the importance of learning electrical signs, symbols and data. Analyze electrical components and materials based on electrical signs, symbols and data Objectives
DIAGRAM HAZARD PROHIBITION A hazard is a potential source of harm. It is a symbolic representation of information using visualization techniques. It is the act or practice of forbidding something by law Which of these circuits would work? Definition of Terms
Guess the common words or phrase using series of picture A B C Rebus Puzzle!
ELECTRICAL SIGN Are pictures of a symbol intended to alert and instruct people to avoid potentially hazardous condition. - Knowing and understanding these symbols will help you operate your tool better and more safely.
Indicates a hazardous situation which, if not avoided, will result in death or serious injury. Indicates that a person should observe extra awareness. Indicates some precautionary measures against potential hazardous situation which, if not avoided, may result to a minor or moderate injury. Electrical Sign
Indicates high voltage in the area and surrounding equipment. Sign indicate specific safety-related instruction or procedures. Indicates that electrical is present in the area. Electrical Sign
Other Circuit Components Shown below are other circuit components and their corresponding electrical symbols: battery closed switch open switch resistor motor fuse
Activity # 3 “Symbol Sort” Directions: Two Grouped-activity. Each group will pick an envelope, inside the envelope are the corresponding task the group will perform.
When these electrons pass through a load or a receiver, electrical energy can change into other forms, such as light, heat and sound. A dry cell provides the ‘push’ needed for electrons to flow in the loop. These electrons are already present in the wires. What happens in a circuit?
Completing the Circuit Use the electrical symbols when drawing the circuits. 1 way to connect them to get the bulb to light up? Given a bulb, a wire and a cell, can you suggest: 1 way to connect them such that the bulb does not light up?
Bulb lights up Bulb does not light up Completing the Circuit SAMPLE ANSWER
WITH THE HELP OF YOUR TEACHER OR CARER, TEST WHETHER YOUR SUGGESTIONS AND DRAWINGS WILL MAKE THE BULB LIGHT USING ACTUAL BATTERIES, A SMALL LIGHTBULB, AND WIRES. Completing the Circuit EXTENSION ACTIVITY With the help of your teacher or carer, test whether your suggestions and diagrams will make the bulb light using actual batteries, a small lightbulb and wires.
Conductors vs Insulators These materials allow charges to flow freely. These materials resist the free movement of charges. Conductors Insulators silver spoon copper wire rubber balloon rubber tire diamond
WITH THE HELP OF YOUR TEACHER OR CARER, TEST WHETHER YOUR SUGGESTIONS AND DRAWINGS WILL MAKE THE BULB LIGHT USING ACTUAL BATTERIES, A SMALL LIGHTBULB, AND WIRES. Think About It! Can you name other conducting materials aside from copper wire and silver spoon?
Electric circuits play a crucial role in our daily lives. It allows specific devices to produce heat and sound. It allows light bulbs to light up. It helps trains move and makes travelling to work or school easier. It enables the cooling system of a refrigerator to work. What can electric circuits do?
A complete circuit features an unbroken loop where charges can flow. It is a complete path through which electric current flows. Some of its components include wires, a bulb and a power source (cell or battery). Review What is an electric circuit?
Today’s Focus Electric Circuit Components of an Electric Circuit What happens in a circuit? Conductors and Insulators
Which of these circuits would work? A B C Circuit or Circus?
Criteria Excellent 5 POINTS Very Good 3 POINTS Good 1 POINT Content All signs and symbols are put in the proper column correctly. There are 1 to 2 signs and symbols answered incorrect. Majority of signs and symbols answered incorrect. Cooperation All the members of the group give their best and possess appropriate confidence in the entire duration of the performance. Most of the members of the group give their best and possess appropriate confidence in the entire duration of the performance. Only few of the members of the group give their best and possess appropriate confidence in the entire duration of the performance. Time Management Finished the task before the given time Finished the task in time Unable to finished the given task