Any ideas what plant these seeds are from?
Let us know what you think.
Edit: The answer is now posted.
Month: August 2010 (Page 5 of 7)
Did you guess what plant these mystery seeds came from?
Here’s a few more hints:
Do you recognize it yet? These are the flowers and vines of the birdhouse gourd, Lagenaria siceraria.
We had never grown them before, so we were surprised to find out the white flowers opened at night. Apparently they are moth pollinated.
Like their relatives the squashes and pumpkins, birdhouse gourds have separate male and female flowers. The female flowers have a rounded bump under the petals.
The male flowers lack the bulge.
Hopefully we have enough moths to pollinate the flowers and produce some of these:
By the way, these plants trail everywhere, so if you decide to grow them, make sure you have a lot of space.
Have you grown birdhouse gourds?
This week our activity is inspired by the middle-grade book Candy Bomber:Â The Story of the Berlin Airlift’s “Chocolate Pilot” by Michael O. Tunnell. For a full review of the book, visit Wrapped In Foil.
In Candy Bomber, pilot Gail Halvorsen releases small parachutes over the city of West Berlin after the end of World War II. The parachutes are carrying bundles of candy for the children whose lives have been disrupted by the aftermath of the war. Eventually the candy drops are turned into an official U.S. Air Force operation and more pilots join in. It is a heartwarming tale.
The challenge of building and testing parachutes would be a fun science activity to pair with this book.
A parachute consists of some sort of light material to form the canopy and suspension lines to attach the load.
Variables to test:
- parachute materials, such as cloth, plastic bags, paper, etc. Handkerchiefs were used in the Candy Bomber.
- canopy shape, such as square versus round
- canopy size
- length and/or number of suspension lines
- different shapes and types of candy
Some potential factors to measure:
- Time of descent (slower is better)
- Accuracy of parachute flight to a target
- Safety of load delivery (Does the candy land unharmed?)
- Distance traveled (if testing outside under windy conditions)
You will need a launch site. We drop ours over the balcony from the second story of our house to the first floor. You might try playground equipment at a park or school that has a stable, raised platform. Keep safety in mind.
Gather:
- materials to make canopies
- materials to make suspension lines, such as string or yarn
- measuring tape
- stopwatch
- assorted candy, individual pieces of hard candy with holes in the center would be the easiest.
- pencil and paper to record results
- scissors
- heavy-duty tape to attach suspension lines (optional, but may speed assembly) and to attach load
The simplest parachute to make is a square of material with strings tied to the four corners. Start with lines about 1 foot long. Tie the strings on the corners and bring the strings together at the bottom. Tie on a candy. A single hard candy with a hole in the center might be a good starting point, as long as your children are old enough.
Drop your parachute and measure one of the suggested factors. This is a great project to do with groups.
Here’s a somewhat long video that shows you more details of how to make toy parachutes.
Let us know what you find out about parachutes.
Also, let us know what you think of the book.
For more information, see Roberta Gibson Writes.