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Презентация, доклад по физике на тему Применение электромагнитов (8 класс) на английском языке.
Содержание
- 1. Презентация по физике на тему Применение электромагнитов (8 класс) на английском языке.
- 2. Слайд 2
- 3. Applications of electromagnetshttps://www.kendrion.com/
- 4. Electromagnetic relayPart 1 Pre-taskTry to guess the
- 5. Electromagnetic relay1. A relay is an electrical switch
- 6. Electromagnetic relay2nd switch1st switch2nd circuityokearmatureelectromagnet
- 7. Electromagnetic relay
- 8. Electric bell and electric door boltStudy the
- 9. Description and explanation of the processStructure1. Paraphrasing the question2. Overview3. Detailing each stage (describing and explanation)
- 10. Description and explanation of the processParaphrasingExample1 Process
- 11. Description and explanation of the processOverviewAsk yourself
- 12. Description and explanation of the processDetailing each
- 13. Description and explanation of the processDetailing each
- 14. Description and explanation of the working process
Applications of electromagnetshttps://www.kendrion.com/
Слайд 1Her eyes were e______________, It a__________ my heart when it had
the c_______ named ‘Love’
Kevin Jeffrey,
professional football forward
Слайд 4Electromagnetic relay
Part 1 Pre-task
Try to guess the missing words in the
text Electromagnetic relay
Try to label the diagram of electromagnetic relay
Part 2 While-task
Watch the video https://www.youtube.com/watch?v=tbMX9USTyAI
https://www.youtube.com/watch?v=cunddFiQzrk
Fill the gaps in the text
Label the diagram
Try to label the diagram of electromagnetic relay
Part 2 While-task
Watch the video https://www.youtube.com/watch?v=tbMX9USTyAI
https://www.youtube.com/watch?v=cunddFiQzrk
Fill the gaps in the text
Label the diagram
Слайд 5Electromagnetic relay
1. A relay is an electrical switch that opens and closes
under the control of another electrical circuit.
2. The switch is operated by an electromagnet to open or close one or many sets of contacts.
3. A relay has at least two circuits. One circuit can be used to control another circuit. The 1st circuit (input circuit) supplies current to the electromagnet.
4. When the switch is close, the electromagnet is magnetized and attract one end of the iron armature.
5. The armature is then closes the contacts (2nd switch) and allows current flows in the second circuit.
6. When the 1st switch is open again, the current to the electromagnet is cut, the electromagnet loses its magnetism and the 2nd switch is opened. Thus current stop to flow in the 2nd circuit.
2. The switch is operated by an electromagnet to open or close one or many sets of contacts.
3. A relay has at least two circuits. One circuit can be used to control another circuit. The 1st circuit (input circuit) supplies current to the electromagnet.
4. When the switch is close, the electromagnet is magnetized and attract one end of the iron armature.
5. The armature is then closes the contacts (2nd switch) and allows current flows in the second circuit.
6. When the 1st switch is open again, the current to the electromagnet is cut, the electromagnet loses its magnetism and the 2nd switch is opened. Thus current stop to flow in the 2nd circuit.
Слайд 7Electromagnetic relay
Josef Henry, 1835 United States
https://dir.indiamart.com/impcat/electromagnetic-relay.html
https://www.sutori.com/item/1838
https://www.explainthatstuff.com/
Electric telegraph
William Cooke and Charles Wheatstone,
1838 England
developed by Samuel Morse, United States
Telephone
Alexander Graham Bell,
1876 Canada
Transistor
John Bardeen, William Shockley
and Walter Brattain,
1947 United States
Слайд 8Electric bell and electric door bolt
Study the slides 1 to 26
or 27 to 40 of the presentation
Draw the diagram showing how electric bell/door bolt is structured
Label the diagram to show the main components of this appliance
Describe and explain how this appliance works
Draw the diagram showing how electric bell/door bolt is structured
Label the diagram to show the main components of this appliance
Describe and explain how this appliance works
https://www.indiamart.com/proddetail/electric-bell-4880921448.html
https://www.mr-locks.com/locks/electronic-locks/
Слайд 9Description and explanation of the process
Structure
1. Paraphrasing the question
2. Overview
3. Detailing
each stage (describing and explanation)
Слайд 10Description and explanation of the process
Paraphrasing
Example1 Process of Photosynthesis
Example2 Production of electricity by a nuclear power station
The illustration shows the process of how nuclear power plants make electricity
The diagram demonstrates how plants produce energy from sunlight
Use synonyms and change the word order of the sentence
Слайд 11Description and explanation of the process
Overview
Ask yourself the following questions and
form 2 overview sentences
Is it a man-made or natural process?
How many stages are there?
What is produced?
Where does it start and where does it end?
Is it cyclical or linear?
Are any materials added?
Is it a man-made or natural process?
How many stages are there?
What is produced?
Where does it start and where does it end?
Is it cyclical or linear?
Are any materials added?
Слайд 12Description and explanation of the process
Detailing each stage (describing and explanation)
Say
what each stage does
What it produces
If any materials are added
Discuss the relationship with the previous or subsequent stages.
What it produces
If any materials are added
Discuss the relationship with the previous or subsequent stages.
What is the difference between description and explanation?
Слайд 13Description and explanation of the process
Detailing each stage (describing and explanation)
Sequencing
the Process
• Firstly/First of all
• Secondly
• After that
• From this
• Where
• Following that
• Subsequently
• Before that
• In turn
• Then
• Firstly/First of all
• Secondly
• After that
• From this
• Where
• Following that
• Subsequently
• Before that
• In turn
• Then
Слайд 14Description and explanation of the working process of electric bell/electric bolt
Diagram1
Uses Of Electromagnet - Electric Bell
http://spmphysics.onlinetuition.com.my/2008/06/uses-of-electromagnet-electric-bell.html
Diagram2 Uses of Electromagnet – Electric Door Bolt
