These UV Beads Change Color in SECONDS When You Go Outside!

Описание: These UV Beads Change Color in SECONDS When You Go Outside!
Amazing Science Experiment Shows Hidden UV Rays! (UV Beads)
Made for parents & teachers

Hey, welcome back to Kids Fun Science! Today's *science experiment* demonstrates how UV beads react to *uv light**, making it a fantastic **science for kids* project. This *do it yourself science* activity helps teach about *sun protection* and sun safety in a practical way.

Chapters
0:21 What you need
1:17 What you need with UV flashlight
1:24 making a bracelet
2:19 1st experiment - White beads turn color in the sun
2:57 2nd experiment - UV sun glasses to block the white beads
3:32 3rd experiment - SPF sunscreen 50 vs 15
3:49 Glow in the dark beads
3:59 Why do the beans turn color?

Korlon 1500 Pcs UV Beads, Glow in The Dark Beads for Bracelets (I get a small commission)
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Creative Arts by Charles Leonard Chenille Stem Class Pack (I get a small commission)
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UV Flashlight USB Rechargeable
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Science Kits & more (I get a small commission)
https://elementarysciencen.wixsite.co...

Kids Fun Science Online Store
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Instructions
1) Take one pipe cleaner
2) Take 10/15 UV beads
3) Put the UV beads on the pipe cleaner
4) Rap the pipe cleaner around your wrist.
5) Take them outside and the white beads will turn bright colors in direct sunlight. When you return back into the building the UV beads will turn back to white. They can do this 1000's of times. PLUS they glow in the dark!

Watch white beads change to bright colors when taken outside! When returned they turn back to white. What causes the change? Humidity? Temperature? The beads contain pigments which react with ultraviolet light from the sun, even on a cloudy day. Great for teaching UV awareness! Use the beads to test the UV blocking effectiveness of sunblock, sunglasses, windows, etc.

UV Beads Classroom Activities
Next Generation Science Standards (NGSS)
1-PS4-2 Students can conduct investigations showing evidence of illumination from an external source such as the sun
1-PS4-4 Electromagnetic Radiation Objects can be seen only when light is available to illuminate them.

There are many ways to use the Ultraviolet Light Detecting Beads in your class, depending upon the time available and grade level of your students. Here are some starter ideas:

1) A Great Inquiry Lesson! Give each of your students five white beads on a pipe cleaner to take home (use different colored beads). Do not tell them what to expect. Tell them that their homework is to determine what makes the beads “special.” They should write down their observations and at least two questions that they would like to explore further. This is an excellent way to guarantee a lively discussion during the next class session!

2) Make a UV detecting bracelet. To each student, distribute two each of red, yellow, orange, blue and purple UV detecting beads. Instruct them to place the beads onto a rawhide string (#UV-RAW), to create a pattern so that two beads of the same color are not next to each other. Your students can check their progress by exposing the beads to sunlight. Tell students to wear their bracelets (or tie them to a backpack) and monitor their UV exposure for the next few days. What observations can they make about the amount of time they spend in sunlight? Does the bracelet seem like a reliable UV detector? As a class, develop a list of possible ways these beads could be used to promote awareness around sun safety and skin cancer prevention in their school.

3) Test the effectiveness of sunblock. By coating one side of a sandwich bag with different levels of sun block, and placing a purple UV bead under each and then exposing the sheets to UV light, you can observe which bead changes most dramatically and determine if the SPF or brand of lotion actually affects the amount of UV light that passes through to your skin.

4) Measure variations in the sun’s UV light. Instruct students to compare the
amount of UV light emitted from the sun on different colored beads and at different
times of the day. You will find that the beads change color much faster at noon than in
the late afternoon. As an added twist, take your beads outside at the same time of the
day, but under different weather conditions. Does cloud cover change the amount of
UV light you are exposed to? What about rainy or cold weather? Encourage students
to make and test their hypotheses about what makes the beads change colors.

5) Investigate UV absorption. Place different transparent filters between a UV light source and the beads—for instance, try eyeglasses, sunglasses or a UV-absorbing window film. Do they completely block the UV light or merely reduce its intensity? You will find that the front windshields of most cars block UV radiation, but the side windows usually don’t have this built-in protection.
#uvlight #ultraviolet #uvbeads