Conceptual Physics Alive: Gravity 2

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Master teacher Paul Hewitt continues the discussion of gravitation with the emphasis on the ocean, earth, and atmospheric tides.

Please note: The digital content will be sent to the email provided during checkout, once your order has been processed. Order will be processed no later than the next business day.
Digital format: The email you will receive will contain a hyperlink to download a .ZIP file containing a digital video (.MP4) and questions set with answers (.PDF).
Notice: This digital content can be used in physical or remote classroom settings (e.g., Google Classroom, Canvas, etc.), or Homeschool. Replicating and distributing this digital content for profit without the authority of the copyright owner is an infringement of the copyright.

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Additional Details

Conceptual Physics Alive: Gravity 2 includes a digital video and questions set with answers.

Observe Paul Hewitt teach in a classroom with real students, using engaging demonstrations and artwork. In this video, the discussion of gravitation continues with the emphasis on the ocean, earth, and atmospheric tides. Other topics include tunnels through the earth, black holes, the big bang, and speculations of an oscillating universe.

Gravity 2 Includes:

  • Hewitt begins with a discussion of ocean tides.
  • Hewitt by chalkboard explanation gives an analogy of pulling on a ball of jello in such a way as to deform the jello (like the moon does to the earth's oceans).
  • The earth and moon accelerate toward each other as they orbit about a common center of mass.
  • The earth rotates daily beneath bulges produced by the moon's pull.
  • Hewitt demonstrates the twice-daily tides with a rotating globe.
  • The sun's influence in producing tides.
  • Explanation of tide variation due to the various positions of the moon and the sun.
  • Affects of alignment of sun, moon, and earth, and the new or full moon.
  • Moon phases.
  • Tides in the molten parts of the solid earth.
  • Tides in the atmosphere of the earth.
  • Cosmic ray incidence at the earth's surface.
  • Zero gravitational field at the earth's center.
  • Geometrical explanation of reduced field inside the earth.
  • Gravitational field at the surface of a collapsing star.
  • Escape speeds at the surface of collapsing stars.
  • The concept of a black hole.
  • Hewitt stresses the role of equations in guiding thinking.
  • The oscillating theory of the universe is discussed.
  • Hewitt considers cosmic time via an imaginary graph and compares the time when fire was discovered with the present, and speculates on how humans will be in the future.

Please note: The digital content will be sent to the email provided during checkout, once your order has been processed. Order will be processed no later than the next business day.

Digital format: The email you will receive will contain a hyperlink to download a .ZIP file containing a digital video (.MP4) and questions set with answers (.PDF).

NoticeThe Conceptual Physics Alive Digital content is protected by copyright laws. Replicating and distributing this digital content without the authority of the copyright owner is an infringement of the copyright. This digital content can be used in physical or remote classroom settings (e.g., Google Classroom, Canvas, etc.), or Homeschool.

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