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Physics Classroom is making strides to make our site accessible to everyone. Our site contains 6 navigation areas. The Primary, Secondary, and Page Level navigations have a screen reader version of their nav structure that allows using the left and right keys to navigate sibling navigation items, and up or down keys to navigate parent or child navigation items. The others can be navigated using tabs. The Primary Navigation handles the first 2 levels of site pages. The Secondary (which is not always available) handles the 3rd and 4th level of structure. The Page level navigation allows you to navigate the current page's headings quickly. The Header Navigation contains the Light/Dark Mode toggle, Search, Notifications and account login. The Breadcrumb Navigation contains the breadcrumb of the current page. If the current page has a breadcrumb, you can get to it by skipping to the content and tabbing in reverse (shift plus tab). The Footer Navigation contains links such as Privacy, Contact, about and terms. Some resources contain an Audio Player that can be activated by holding down the T key for 3 seconds, and then using K to pause and resume. While not every area of Physics Classroom is usable purely from keyboard and screen reader, we are committed to continue work on making this possible. If you have questions or need additional help, please use this link to contact us.

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Waves - Case Studies

The Waves - Case Studies Concept Builder focuses on an understanding of how a wave pattern is affected by changes in the properties of a wave (such as frequency and speed) and by the properties of a medium (such as tension and linear density of a string). There are 36 total questions organized into 12 different Question Groups and spread across three different activities. In Activity 1 - Wavelength and Amplitude - learners are presented with a wave pattern and asked to identify a wave pattern that has two times or one-half the wavelength or amplitude. In Activity 2 - Frequency, Speed, and Wavelength - learners are presented with one wave pattern and asked to identify a second wave pattern resulting from two times or one-half the speed or frequency. In Activity 3 - Speed, Tension, and Density - learners are presented with one wave pattern and asked to identify a second wave pattern that results from four times or one-fourth the tension or density. Use of this Concept Builder with our Task Tracker system allows teachers to track student progress.

Users are encouraged to open the Concept Builder and begin. There is no need for an activity sheet for this Concept Builder.

Learners and Instructors may also be interested in viewing the accompanying Notes page. Technical information, teaching suggestions, and related resources that complement this Interactive are provided on the View Notes.

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