Do all objects vibrate when they make sounds?
- Do Now– Please get out your ISN and copy down today’s Home Learning in your planner. Add to the Table of Contents: “Laser & Mirror Demonstration p.66” (Left Side). Head p.66 properly with “Laser & Mirror Demonstration-2/20/20.”
- Write-Pair-Share– Answer the following questions on ISN p.67: What do you think would cause differences in how the laser dot moved in the demonstration? How do you think the laser dot will move if we use a speaker to make different sounds? Why?
- Laser & Mirror Demonstration– Speaker- As we carry out our investigation, record our data on Part 2 of your handout. Make a claim from evidence on Part 4 of your handout.
- Rubric for Modeling Motion of an Object Making Sounds– Work with your partner to use the rubric to evaluate and revise your model.
- Notebook Work– Tape “How do instruments move when making sounds (vibrating)?” handout to ISN p.61. Tape “How do objects move when they make sounds?” (laser & mirror) handout as a flip page to ISN p.66.
Readings– due tomorrow, 2/21– Where else are lasers used to detect vibration? (Reading 1: “Engineers Measure Big Ben’s Bell” and “Reading 2: The Vibrating Moon”) Read the two articles and then answer the questions