UV and IR - "The Invisible Light"

-

     We cannot see ultraviolet light, but it makes our skin darker/ more tanned.

    We cannot see the infrared light, but snakes can use it to find prey.

What is the difference between the two? Why space telescopes use these electromagnetic waves to scan our universe?




  


    The students in class were very enthusiastic about the movie "Predator", were an alien who can only see in infrared spectrum hunts people.


  This is a good opportunity to tell them about the "invisible" ultraviolet and infrared light, as well as about the space telescopes that use it to see distant stars better.


   A short video clip from the movie, as well as a presentation with the explanations, and a fun quizizz game on this topic may be downloeded from this link  https://sharelessonresources.blogspot.com/2021/04/uv-and-ir-invisible-lights.html



https://drive.google.com/drive/folders/1dH9m4HcG1EA214RBeaGSUzWJ6Gz2lOx0?usp=sharing

   


Easy Quizizz - 7 questions about different Electromagnetic Waves  https://quizizz.com/admin/quiz/607e5ebb220a91001f88e7bc










Comments

Post a Comment

Popular Posts

Plant Hormones - The Gibberellic Acid Experiments on Radish Plants

-
Image
Radishes are easy to grow – they do need special care and are no susceptible to many diseases. Radishes are ready to harvest after 1-2 months since planting the seeds. How to use plant hormones to get bigger radishes? What will gibberellic acid do to a radish plant? Let’s do an experiment ! See the video highlights of the experiment https://youtu.be/TDPGbxsoahU See the lesson PowerPoint  https://drive.google.com/drive/folders/1Mh3618X7SwjSraHK-7qJxG48w1-kbjiy?usp=sharing                                                
Read more

Project 1 - Describe an Animal

-
Image
 Project 1 - Describe an Animal Hello Everybody! Please see below a Grade 7 Science project "Describe an Animal". There is the project announcement, a sample presentation, and instructions on how to students may download images from internet on school laptops.  https://drive.google.com/drive/folders/1AO82w-lXZIEaVzQyCsB5ckct5GgimAAZ?usp=sharing           Project Announcement                Sample Presentation                How to make a presentation
Read more

Seeds and Spores - Reproduction of Plants

-
Image
   Why do plants need flowers? What is pollen? Pollination and fertilization, and parts of a flower.  What are dormant seeds and what is germination of seeds?    Why do some plants have no flowers? How do conifers reproduce?    How do ferns reproduce? What are spores? Gametophyte and sporophyte stage of the seedless plants' life cycle. https://drive.google.com/drive/folders/1HKKwvtxnv5Up85EbRLgdsF674EhLNd-s?usp=sharing  /\/\/\/\/\/\/\/\/\/\/ \Lesson Highlights \/\/\/\/\/\/\/\/\/\/\/\/ ********************************************************************************                                     Download   or see the lesson  PowerPoint  and the  video   from Google Drive >>>>>>>>>>>>>>>>>>>>>Click on the link below https://drive.google.com/drive/folders/1HKKwvtx...
Read more

Vascular vs Nonvascular Plants, Flowering vs Nonflowering Seed Plants

-
Image
 Why plants need to have fruits? Vascular vs Nonvascular Plants  Flowering vs Nonflowering Seed Plants Featuring t he Largest tree in the world  Featuring the date palm trees farm in Jordan. Did you know that palm trees have flowers? https://www.youtube.com/watch?v=U5uhcPsUC3k Download the complete lesson for free https://drive.google.com/drive/folders/19c5UsUgIatXT4RC59Z_JP7gqFNb9hBJL?usp=sharing Meet a giant sequoia - the biggest tree in the world! Find out, how can it grow so tall. Let's visit a date palm trees farm in Jordan! Let's learn about vascular, nonvascular, flowering, and nonflowering plants! The lesson includes useful tables to understand what each of the four groups of plants has                               
Read more