Author: Roberta (Page 216 of 562)

Mystery Seed of the Week 190

Our seeds this week are actually from a plant that is related to last week’s plant.

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The seeds don’t look much alike, however.

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This week mystery seeds are speckled and teardrop shaped, rather than round and brown like last week’s.

Today’s seeds were hard to retrieve because they drop from the plant as soon as they mature. In fact, the ones in these photographs might not be fully ripe.

mystery-seeds-190-calyx

Perhaps seeing the “seed holders” from the plant will help?

Do you recognize what plant these seeds are from? If you choose to, please leave a comment with your ideas.

New mystery seeds and Seed of the Week answers are posted on Tuesdays.

Edit:  The answer is now posted.

Seed of the Week: Common or Garden Sage

Our round mystery seeds from last week were from the common or garden sage, Salvia officinalis (The hint meant someone who is “wise” is a sage.)

common-sage-seeds-wiki

Perhaps you can recognize the seeds better from this public domain photograph from Wikimedia.

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Garden sage is a perennial herb, originally from the Mediterranean region.

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The leaves of the most common variety are gray-green, but some may be variegated with cream or purplish areas.

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The leaves are soft and look bumpy.

sage-leaf-close

The botanical term for the bumpiness is rugose, and it is due to the plants veins forming a deeply-indented net.

Salvia_officinalisThis public domain illustration from Wikimedia shows the tubular flowers. The flowers vary in color from light pink to blue to purple, depending on the variety.

Sage is used in cooking, particularly at Thanksgiving.

Do you have a favorite recipe that uses sage?

Plastic, Ahoy: Investigating the Great Pacific Garbage Patch

Want a first hand look at young scientists exploring a recently discovered phenomenon? Plastic, Ahoy!: Investigating the Great Pacific Garbage Patch by Patricia Newman, with photographs by Annie Crawley introduces the middle grade level reader to three graduate students who spend nearly three weeks aboard a research vessel in the Pacific Ocean taking samples from what is called the “Great Pacific Garbage Patch.”

Plastic, Ahoy!- Investigating the Great Pacific Garbage Patch

In August of 2009, Miriam Goldstein, Chelsea Rochman, and Darcy Taniguchi departed on a ship as part of the Scripps Environmental Accumulation of Plastic Expedition or SEAPLEX (see the blog). The book chronicles their observations and experiences.

You can get a feel for the book in this trailer:

 

 

Surprisingly, the students found that much of the plastic in the Garbage Patch is small broken pieces, basically “the size of confetti.” The small size is going to make removing the plastic from the water very difficult because any net that is the right size to capture the bits of plastic will also capture all sorts of marine life. The bottom line is that these are not all full-sized water bottles floating around.

The team members also discovered that 9% of 147 the fish they sampled during the trip had plastic bits in their stomachs. Given that there is some evidence plastic bits tend to accumulate toxins from the water, this could have long term negative consequences to food chains. Obviously more studies need to be done.

Not all the news was necessarily negative, however. One study found that sea-going relatives of water striders called “sea striders” are actually doing better in the Garbage Patch because more debris means more places they can lay their eggs (Plastic Trash Altering Ocean Habitats, Scripps Study Shows).

Plastic, Ahoy! can be a jumping off point for many potential science experiments and explorations of your own. Here are just a few ideas:

1. The lifespans of plastic objects

How long will your trash bag live? is an idea for a science fair project that compares the longevity of plastic, paper, and biodegradable plastic bags buried in the ground. This is a long duration experiment (months).

In this article, a Teen Decomposes Plastic Bag in Three Months

2. Preventing plastic from reaching the ocean

Science Buddies has a science fair project idea for looking at the design of storm drains with the idea of keeping trash from getting into the water

3. Floating ocean trash experiments from previous post at Growing with Science

4. The National Ocean and Atmospheric Administration’s Marine Debris Program has educational materials such as:

Plastic, Ahoy!: Investigating the Great Pacific Garbage Patch by Patricia Newman, with photographs by Annie Crawley is an exciting introduction to science, told through the stories of actual young scientists. You will want to share it with children interested in marine biology, chemistry and conservation. It would make perfect reading for Earth Day (April 22, 2014) or World Ocean Day (June 8, 2014) or a unit on the environment, particularly the marine environment.

Recommended Ages:  8-12
Publisher: Millbrook Pr Trade (January 1, 2014)
ISBN-10: 1467712833
ISBN-13: 978-1467712835

Disclosures: This book was provided for review via Blue Slip Media. Also, I am an affiliate for Amazon, and if you click through the linked titles or ads and make a purchase, I will receive a small commission at no extra charge to you. Proceeds will be used to maintain this self-hosted blog.

 

Come visit the STEM Friday blog each week to find more great Science, Technology, Engineering and Math books.

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