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Traveling Waves: Crash Course Physics #17
  • Physics

Traveling Waves: Crash Course Physics #17

Waves are cool. The more we learn about waves, the more we learn about a lot of things in physics. Everything from earthquakes to music! Ropes can tell us a lot about how traveling waves work so, in this episode of Crash Course Physics, Shini uses ropes (and animated ropes) to talk about how waves carry energy and how different kinds of waves transmit energy differently.

  • Video
  • Beginner
  • English
Andrei Scherbak
Andrei Scherbak
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30
Past vs Present
  • English

Past vs Present

In this lesson we will discuss renovation topic, learn new words. talk about the experience of creating renovation. After we will revise past and present tenses.

  • Theory with exercises
  • Intermediate
  • English
Maria  Nekrasova
Maria Nekrasova
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30
Travel on light
  • English

Travel on light

In this lesson, we'll talk about different tips and tricks on how to take less luggage on a trip. What helps you decide which clothes to pack? Where should you put expensive things? We'll also revise the Passive Voice, countable and uncountable nouns and the vocabulary to talk about minimalism, everyday things and materials.

  • Theory with exercises
  • Intermediate
  • English
Darina Gribanova
Darina Gribanova
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30
present simple-3
  • English

present simple-3

1. I (to do) morning exercises. 2. He (to work) at a factory. 3. She (to sleep) after dinner. 4. We (to work) part-time. 5. They (to drink) tea every day. 6. Mike (to be) a student. 7. Helen (to have) a car. 8. You (to be) a good friend. 9. You (to be) good friends. 10. It (to be) difficult to remember everything.

  • Reading
  • Elementary
  • English
Anna Snim
Anna Snim