Author: Roberta (Page 498 of 561)

Weekend Science Fun: Spider Webs

Summer is a great time to study spider webs. Some webs, such as those of the orb weaver spiders, are incredibly complex and beautiful.

The spider uses its spinnerets to produce the silk. In this video, they suggest that the spider rests so it can switch between non-silky silk and sticky silk production. Note: It has captions, so you can turn off the sound.

Activity:  Make a Spider Web

Gather:

  • Cardstock, poster board or a file folder
  • Yarn
  • Hole punch
  • Small spider clip art (optional)

Next, cut a square out of the cardstock. Make the size appropriate for the age of the children you are working with. Cut out the center of the square, leaving a frame about one inch wide. Cut holes in the frame with a hole punch. Now have the child weave a web by placing yarn through the holes.

For young children, this may be simply a lacing exercise. Encourage older children to create an art project. When they are done, leave a tail of yarn and tie or glue on a spider picture.

spider web activity for kids

For giant fun, place some kitchen chairs in a circle in an open area, hand the kids some skeins of yarn and let them connect the chairs with their own human-sized web. Note:  This project is loads of fun for the kids, but not always that fun to clean up. Be prepared with some scissors.

For more information about spiders, check the spiders category of this blog.

Bug of the Week: Jumping Spiders

The jumping spider photos seems to be piling up, so maybe today would be a good day to use them.

jumping spider

Jumping spiders have two large round eyes on the front of their cephalothorax (we’d call it a head), as well as six smaller ones to the top and sides.

jumping spider

Jumping spiders are fairly tiny as spiders go. They sit on plants waiting for insect prey and when they see something, they jump with their stout legs.

jumping spider

Many jumping spiders are colorful. This one looks like a tiny zebra. or maybe that should be tiger…

jumping spider

This jumping spider had red markings on its abdomen.

jumping spider

It was trying to catch bees and flies coming to visit these large flowers.

jumping spider

jumping spider

Jumping spiders have retinas in their eyes, so the eyes change color as they look around. If their eyes go dark, they are looking right at you. Compare the eyes of this spider to the top one.

Have you seen any jumping spiders lately?

Meet a Scientist Monday: Physicists

If your child is interested in physics as a career, he or she might want to check out these case studies of actual people working in physics at Physics.org. As you will see, coursework in physics can lead to many different job opportunities.

For example, Catherine Heyman, who is an astrophysicist, uses the Hubble telescope in Hawaii.

Helen Gleeson works as a physics lecturer at Manchester University and does research on liquid crystals.

Chris Minto, a materials scientist, designs transducers to generate sound underwater for a small company. That “sounds” like a great job to me, except maybe the part about going down in a submarine.

Note:  The scientists listed studied in Great Britain and the terminology of coursework required reflects their school system.

If you want to learn more try,

Janice VanCleave’s Physics for Every Kid: 101 Easy Experiments in Motion, Heat, Light, Machines, and Sound (Science for Every Kid Series) by Janice VanCleave

Basher Science: Physics: Why Matter Matters by Dan Green and Simon Basher (Illustrator)

For adults:

Surely You’re Joking, Mr. Feynman! (Adventures of a Curious Character) by Richard P. Feynman , Ralph Leighton and Edward Hutchings (Editor)

>

The Great Physicists from Galileo to Einstein (Biography of Physics) by George Gamow

Great Physicists: The Life and Times of Leading Physicists from Galileo to Hawking by William H. Cropper

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