Introduction
Photoelectric effect, phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation. The objective of this WebQuest is to inform about this topic and allow to test knowledge. In the section "Task" it will be able to get acquainted with the conditions of the task, in the "Process" it will be able to do the task, in the "Evaluation" and "Conclusion" it will be possible to assess the knowledge. Good luck!
Task
You will watch a short video about the photoelectric effect. You have to listen carefully and answer to 10 questions that will be given about the video. The questions will be in chronological order, answers must be written on a sheet of paper, so you can later compare them. The link to the video is in the next section and so are the questions. Do the task and them compare your answers to the correct ones in the ''Evaluation'' section.
Process
Click on the video to watch it! You can pause by clicking on it again, to write down your answer. You may watch it several times, if it is needed. The 10 questions you should find answers to are below the video. I suggest opening the video in another window (multi-task settings) since this web page makes you scroll up and down to see all the questions.
1. What might the metal release when you shine light on metal surfaces?
2. What does the classical electromagnetic theory treats light as?
3. What can affect the emission of electrons?
4. What did Albert Einstein suggest in 1905?
5. What do we call a particle of light containing a chunk of light energy?
6. What is the equation for the amount of energy in a photon of light?
7. What is the Planck's constant?
8. Why can't the red light eject electrons?
9. How can you increase the energy of photons?
10. What can photons with high energy do?
Evaluation
Compare your answers to the correct ones!
1. Electrons.
2. A wave.
3. Amplitude and frequency.
4. Light energy must come in chunks.
5. A photon.
6. E=hv
7. 6.626× 10-34 J*s
8. Each photon doesn't have enough energy to dislodge the electron.
9. By increasing the frequency.
10. Remove electrons from metal.
If you got 8-10 correct answers, congratulations, you are a very careful listener, you can now educate your friends and family about this topic. 6-7 correct answers - you should pay more attention to it. If you scored less, I suggest watching the video a few more times, so you can understand where you were mistaken.
Conclusion
Thank you for participating! I hope you found this WebQuest useful and will use the information you received in future! You can study more about this topic and improve your knowledge. Also feel free to share this WebQuest with your classmates.
Credits
This WebQuest was created Alise Reinholde.