facebook Light Intensity Observer DIY | Generation Genius
1%
Processing, please wait...
It was processed successfully!
It was processed successfully!
Login Create Free Account
Create Free Account
Oops! It looks like your security settings are blocking this video 🙁

If you are on a school computer or network, ask your tech person to whitelist these URLs:
*.wistia.com, fast.wistia.com, fast.wistia.net, embedwistia-a.akamaihd.net

Sometimes a simple refresh solves this issue. If you need further help, contact us.

 

Causes of Seasons Activity for Kids

Light Intensity Observer DIY

  • Duration: 10 min
  • Difficulty: Easy
  • Cost: $0 to $10

See the difference in light intensity at different angles!

Material List

  • 1Flashlight (or phone light)
  • 1Toilet Paper Tube
  • 1Sheet of Graph Paper
  • 1Straw
  • 2Different Colored Markers
  • 1Roll of Tape

Instructions

  • 1Tape the straw to the toilet paper tube.
  • 2Turn on the flashlight and shine it through the tube on to the graph paper
  • 3Trace the circle of light with the marker, making sure to keep it straight.
  • 4Repeat the process with the tube at a 45° angle.
  • 5Trace the new oval of light with a different colored marker.
  • 6Observe the difference!

How It Works

When the light is shined at an angle, the same amount of light spreads out, which makes it less intense. The smaller the angle, the more it spreads out. Differences in light intensity, due to the Earth’s tilt, are what cause seasons. The light intensity is highest in the summer and lowest in the winter.

Find More
Exciting Activities

More Activities

Browse All
Full Lessons

Watch Full Lessons
X
Success
We’ve sent you an email with instructions how to reset your password.
Ok
x
Choose Your Free Trial Period
3 Days

3 days to access to all of our teaching resources for free.

Continue to Lessons
30 Days

Get 30 days free by inviting other teachers to try it too.

Share with Teachers
Get 30 Days Free
By inviting 4 other teachers to try it too.
4 required

*only school emails accepted.

Skip, I will use a 3 day free trial

Thank You!

Enjoy your free 30 days trial