Crash Course – Astronomy – 34: Binary and Multiple Stars

This is the thirty-fourth video of the Crash Course – Astronomy series, hosted by Dr. Phil Plait. This video examines star systems that include two or more partners.

From the video description:

Table of Contents:

  • What are binary stars? 0:51
  • Merging peanut-shaped stars 6:52
  • Close binaries begin to flow into one another, sometimes blowing up the star 8:29

Crash Course – Astronomy – 24: Light

This is the twenty fourth video of the Crash Course – Astronomy series, hosted by Dr. Phil Plait. This video explains how astronomers use light to observe and understand everything in the universe around us.

From the video description:

Table of Contents:

  • Light is a Form of Energy 0:39
  • Wavelength Tells Us Its Energy and Color 0:59
  • Spectroscopy 7:28

Crash Course – Astronomy – 6: Telescopes

This YouTube video explains how telescopes work, and describes various types of telescopes.

This is the sixth video of the Crash Course – Astronomy series, hosted by Dr. Phil Plait. This video describes the basic principles of telescopes and how varieties of telescope designs function. Also included is a basic guide to purchasing telescopes for personal use. From the video description:

Table of Contents:

  • How Telescopes Work 1:07
  • Refractors vs Reflectors 2:50
  • Technology and the Light Spectrum 7:45

Crash Course channel on YouTube

Crash Course videos are free to use in classes and by individuals. Funded via Patreon and featuring Hank Green on Anatomy and Physiology and Phil Plait (The Bad Astronomer) on Astronomy, the Crash Course series provides an up-to-date look at subjects from experts in their fields, and high-quality animation and production. STEAM topics covered include:

  • Anatomy & Physiology
  • Astronomy
  • Biology
  • Ecology
  • Chemistry

Housing a Forest – How to Make Oobleck Dance

Oobleck is an amazing substance. It flows like a liquid when relaxed, but stiffens to solidity when struck, before relaxing once again.

This demonstration adds a twist (or a rumba!) Putting oobleck into a cookie sheet, and suspending it over a subwoofer playing a variety of tones will cause the oobleck to jump and dance.

Recipes, equipment needed, options, and tips for easy cleanup are included.

Science is Fun – Chemiluminescence

The chemicals in a glow-stick produce light with no noticeable heat. This activity explores glow-stick behavior over time, and at different temperatures.