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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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Concept Builders - Fluids

A Concept Builder is an interactive questioning module that presents learners with carefully crafted questions that target various aspects of a concept. Each Concept Builder focuses the learner's attention upon a discrete learning outcome. Questions target that outcome from a variety of angles using multiple difficulty levels or varying activities. The following Concept Builders target concepts associated with Fluids.

Activities

Bernoulli's Principle

🞋︎ Learning Goal: To use Bernoulli’s principle (and the principle of continuity) to compare the velocity and the pressure at various locations within a flow tube.

Buoyancy

🞋︎ Learning Goal: To relate the actual weight of an obect to: the apparent weight when fully submerged in water, the buoyant force it experiences, and the amount of water displaced (in L, kg, and N).

Fluid Pressure

🞋︎ Learning Goal: To describe the nature of fluid pressure and to identify the variables that affect the amount of fluid pressure at a given location.

Flow Velocity

🞋︎ Learning Goal: To identify the effect of variations in the cross-sectional area of a flow tube upon the flow velocity for fluid in the flow tube.

Properties of Matter

🞋︎ Learning Goal: To identify the properties of solids, liquids and gases with an emphasis on properties that are most characteristic of fluids.To understand the properties of solids, liquids and gases with an emphasis on properties that are most characteristic of fluids.

Sinking, Floating, and Hanging

🞋︎ Learning Goal: To relate object mass and volume information to the gravity and buoyant force in order to predict whether an object would float, sink, or "hang".

Pascal's Principle

🞋︎ Learning Goal: To use Pascal’s Principle to explain and analyze the operation of a hydraulic lift.

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