Category: Fun Science Activity (Page 74 of 112)

Weekend Science Fun: “Cool” Ice Experiments

As the temperatures heat up, its time to pull out the ice and do some “cool” science.

1. Ice Spikes

Have you ever seen bumps or spikes come up from the ice cubes in your ice cube tray? SnowCrystals.com has a great discussion of ice spikes, how they form and how to grow some of your own. For more pictures and a movie, try Spikes on Ice Cubes.

2. Ice cube rescues

Give your child(ren) a challenge to “rescue” ice cubes floating in a glass of water with only a piece of string and some salt. Then watch this video to see how it is done.

3. Freezing and thawing water

Freeze water in various-sized containers and then set the ice “sculptures” out to thaw. (Set them in in deep bowl indoors or outside on a sidewalk or patio where a little melt water won’t matter.) Time how long it takes various sizes and shapes to melt with a watch or clock. Does size or shape influence melting time? How?

Try freezing a water-filled water balloon (set in a bowl first). Once it is frozen, what happens when you toss it? What happens when you freeze a balloon filled with air in a bowl of water?

4. Floating and sinking

Create an ice cube boat and float it to emphasize that ice is less dense than water.

Gather:

  • ice cube tray
  • cold water
  • pie plate or shallow bowl
  • plastic wrap
  • toothpicks
  • triangle of paper
  • clay (optional)

ice-boat
Fill the ice cube tray with water. Cover the tray with a tight layer of plastic wrap, which will hold up the toothpicks. Stick a toothpick in the center of each cube, enough so that there is a least one for each child. When the ice cubes are frozen, remove from the tray. Insert a small triangle of colored paper on each toothpick to make a sail, and float the ice cubes in a bowl of cold water (the colder the better). Do the boats float? Do they stay upright? If not, try adding some clay to the bottom until the ice cubes are balanced. (This may be difficult at first, if the oily clay doesn’t stick to the wet ice. I found it did work with patience.)

5. Moving on to dry ice

Dry ice (frozen carbon dioxide) is available at many grocery stores. Just remember that it is much colder than regular ice and will require special handling. Always use gloves, and tongs are a good idea too. Never put dry ice in a swimming pool!

See this Steve Spangler video for some ideas and handling suggestions.

Ice is so much fun to experiment with in the summer. Let me know if you have any other experiments to do with ice or activity tips.

For more information, try these books:

and these related subjects:

Ice Scientist: Careers in the Frozen Antarctic (Wild Science Careers) by Sara L. Latta

Pioneering Frozen Worlds by Sandra Markle

Trash to Treasure Contest 2010

design-squadLooking for something to do this summer? PBS Kids is sponsoring a Trash to Treasure Contest for ages 5–19. Entries are accepted online from April 5 to September 5, 2010. The idea is to: “Recycle, reuse, and re-engineer everyday materials into an out-of-the box invention.”  Download the contest flyer and read the Official Rules to see if you are interested. Three contestants will be chosen to travel to Boston to appear on the Design Squad show.

Even if you don’t want to participate, take a look at the Parents and Educators section for information and activities that you might find useful.

Honey Bees: Science Activities for Kids

Once again, our activities this week are inspired by a book, this time it is The Hive Detectives: Chronicle of a Honey Bee Catastrophe (Scientists in the Field Series) by Loree Griffin Burns and photographs by Ellen Harasimowicz. (We also used Loree Burn’s Tracking Trash: Flotsam, Jetsam, and the Science of Ocean Motion for activities in a previous post). Check Wrapped in Foil for a review of the book.hive-detectives

You may have heard on the news that honey bees are disappearing. The Hive Detectives follows the research of four scientists trying to figure out what is going on, as well as discussing a lot of general information about honey bees.

In the 1990’s I co-authored a set of lesson plans about honey bees, called “Africanized Honey Bees on the Move” for the University of Arizona. At the time the Africanized honey bees had just moved into Arizona, and many people were concerned about them. The lesson plans have a number of hands-on activities to do with many aspects of honey bee biology. If you go to a grade level, it will list appropriate lessons. Each lesson has links to activity and information sheets. Many of the lessons can be adapted to mixed-age groups.

Here are some honey bee-related activities and links:

1. Gardening for bees

Honey bees require pollen and nectar from flowers in order to survive. One simple activity is to investigate what kinds of bee-friendly plants grow in your area and have your children design and plant a bee garden.

You may wonder if encouraging honey bees to visit flowers in an area with children might be dangerous. It turns out that bees collecting food, called foraging bees, are not likely to sting unless they are stepped on, caught or otherwise threatened. This might not be an appropriate activity, however, for children who are allergic to bees.

(The first two websites were recommended in the book).

Pollinator.org has free planting guides to help you find appropriate plants.

And don’t forget the Great Sunflower Project mentioned in a previous post.

These flowering plants help all kinds of pollinators, not just honey bees.

2. Honey bees and water

honey-bees-drinking

Any idea what these bees are doing?

Honey bees need a lot of water, especially in the summer. They use the water to cool inside the hive, to prevent the wax honeycomb from melting. You can see the tongue, called a proboscis, sucking up the water at the edge of this lily pad.

Getting water can be dangerous business for a honey bee. Honey bees often end up falling in, like the ones you see in swimming pools. Can you design a safe place for honey bees to gather water to add to your garden?

3. Honey bee communication and dances.

One of my favorite lessons was always doing the honey bee waggle dances as a way of learning how honey bees communicate.

Dancing under a polarized sky also has a lot of information about honey bee dances.

4. Honey bee senses

Honey bees perceive the world in a way that is very different from humans.

Honey bee senses lesson

What a bee sees

5. Honey bee and other bee nests

Investigate where honey bees live, where beekeepers keep bees and what it is like inside a hive.

The Insect Architects post has a some information about honey bee homes.

You can supply nest sites for other kinds of bees.

bee-nest-site

I don’t know whether you can read it, but the sign says “Digger Bee Nest Site.” We have left a patch of soil for the tiny digger bees to nest in.

The solitary and social bees lesson has a explanation of the different kinds of bees and how to construct an orchard mason bee nest.

bee-nest-site-2

There are a lot of ways to use honey bees as examples for science and nature lessons. Please let me know if you would like more information about any of these activities or if you have found a great website that helps children learn about honey bees.

Books to help you find out more (linked images and titles go to Amazon):

In addition to The Hive Detectives: Chronicle of a Honey Bee Catastrophe (Scientists in the Field Series),

you might be interested in these other books about bees from a precious post:
For young children you might want to try The Magic School Bus Inside a Beehive

Are You a Bee? (Backyard Books) is an intriguing book that compares humans and honey bees in an informative and gently humorous way.

The Bumblebee Queen by April Pulley Sayre (Author), Patricia J. Wynne (Illustrator) is a positively gorgeous book, chock full of good information. Any child who is interested in bees will love this book.

A Country Year: Living the Questions by Sue Hubbell has some interesting tidbits on keeping honey bees, although it is about many other aspects of the natural world as well. A few of the chapters can some information that could be considered adult, such as she briefly discusses her divorce. You might want to read it first to determine if it is suitable for your older children. I have to say my son and I love it and I read it to him almost every summer (a summer tradition).

A Book of Bees: And How to Keep Them by Sue Hubbell contains a lot more technical information about beekeeping. There are many other books about beekeeping available, but this one warms my heart because it also shows more of the human side of the experience.

Plus visit our growing list of children’s books about honey bees at Science Books for Kids.

Note: the book that inspired this post was found at our local library.

« Older posts Newer posts »