B1 Intermediate US 30 Folder Collection
After playing the video, you can click or select the word to look it up in the dictionary.
Loading...
Report Subtitle Errors
Smart Learning for All
Topic: Heat transfer.
Why do we use a black umbrella in summer?
Hey.
Looks like you are heading out today.
But it is so hot outside.
Why don't you take a dark colored umbrella, preferably black?
See, I warned you.
At least now use the black umbrella.
Now, do you notice the heat?
No, right?
Do you know why?
This is because in summer season, the temperatures are quite high.
Now, as compared to other colors.
A black colored umbrella, being dark.
Absorbs most of the light and ultraviolet radiations coming from the sun and gets heated.
It then radiates the heat back into the air.
Thus, making a black umbrella, a good choice to use in summers.
For more educational videos please visit http://www.SmartLearningforAll.com
Also, don't forget to subscribe to our YouTube channel.
    You must  Log in  to get the function.
Tip: Click on the article or the word in the subtitle to get translation quickly!

Loading…

Why do we use a black umbrella in summer? | #aumsum

30 Folder Collection
AumSum published on April 15, 2019
More Recommended Videos
  1. 1. Search word

    Select word on the caption to look it up in the dictionary!

  2. 2. Repeat single sentence

    Repeat the same sentence to enhance listening ability

  3. 3. Shortcut

    Shortcut!

  4. 4. Close caption

    Close the English caption

  5. 5. Embed

    Embed the video to your blog

  6. 6. Unfold

    Hide right panel

  1. Listening Quiz

    Listening Quiz!

  1. Click to open your notebook

  1. UrbanDictionary 俚語字典整合查詢。一般字典查詢不到你滿意的解譯,不妨使用「俚語字典」,或許會讓你有滿意的答案喔