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Wild Turkey Information from Mass Wildife November 24, 2008

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turkey

Click below to read about Wild Turkeys in Massachusetts.  Check out the “FAQ” section (frequently asked questions).

http://www.mass.gov/dfwele/dfw/wildlife/facts/birds/turkey/turkey_home.htm

Happy Turkey Day from the Science Center!

Tarantula Molts! November 20, 2008

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tarantula

I had the pleasure of observing and photographing the Science Center’s Chilean Rose-hair Tarantula during its molt.

Click below to view pictures of “Shadow” the Tarantula as she molts.

 tarantula-molting

 Tarantulas are invertebrate animals that need to shed their complete exoskeleton in order to grow.  Molting may occur as often as once a month in young “spiderlings”, or only once every one to two years in adults. As a molt approaches, the tarantula may refuse food, sometimes for several weeks or even months. Further evidence of an upcoming molt is reduced activity, increased use of silk as it creates a webby “molting mat” and dull coloration.

When a tarantula molts it will turn onto its “back.”  Pressure changes within the molting tarantula will cause its old exoskeleton to separate at the carapace and abdomen. It will pull its legs out of its old skin much like you pull your fingers out of a glove. The cast exoskeleton looks much like a hollowed-out complete tarantula. Once the process is completed the pale-colored tarantula will rest and then spend the course of the next week growing, as its new exoskeleton hardens.  This is the time when the tarantula is its most vulnerable. Tarantulas may fully harden in 3-4 days or up to two weeks.

To learn more about tarantulas, check out links below:

http://animals.nationalgeographic.com/animals/bugs/tarantula.html

 

 http://www.tarantulas.com/

Third grade Rockhounds split a Geode! November 14, 2008

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Without a doubt, one of the most exciting units in science is the study of Rocks and Minerals.  All grade 3 students in Burlington become  rock and  mineral experts.  One of their favorite activities is to watch a Geode being split in half by a Diamond Blade Rock Saw.

un-cut-geode

Francis Wyman student displaying un-cut geode

The Burlington Science Center is lucky enough to own a really “neat” rock saw!  The saw has diamond chips on the blade and spins through water in order to keep things cool as the geode is being cut.

Diamond blade rock saw cutting the geode.

Diamond blade rock saw cutting the geode.

The fascinating thing about Geodes is that no one has any idea what is inside the spherical hunk of rock! One theory of how they are created is:  Geodes begin as bubbles in volcanic rock as it cools.  Sometimes they can also form in Sedimentary Rock where an animal once made a hole or even where a mud ball formed.  Over thosands of years, water seeps through the air bubble and deposits crystals of minerals like quartz.  The crystals keep building up in the bubble and over time create a beautiful design.  The only way to determine what is inside the geode is to either smash it open with a large hammer or cut it in half with a diamond rock saw.  The secret is trapped in the rock for thousands of years!

geode1

Francis Wyman student displays beautiful geode

We hope that some Burlington students will have the opportunity to hunt for their very own geodes on a family vacation.  To learn more about Geodes, you can visit:  www.desertusa.com.  You can also buy pre-cut Geodes online.

Pumpkin Science! November 12, 2008

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pumpkin-close

Every 2nd grade had the opportunity to participate in Pumpkin Science!

Each class received a pumpkin with a series of hands-on experiments including Sink or Float & the Science of Fire.  They recorded data such as pumpkin weight. Teachers also had their students’ measure the circumference and diameter of the pumpkin using both English and Metric units.  

Pumpkin Data Chart

Pumpkin Data Chart

Ms. Sheehan and student testing Sink or Float

Ms. Sheehan and student testing Sink or Float

 

Mrs. Screnci teaches about the Fire Triangle

Mrs. Screnci teaches about the Fire Triangle

What is the diameter of our pumpkin?

What is the circumference of our pumpkin?

We love Pumpkin Science!

We love Pumpkin Science!

4th Grade Rocket Day Blasts Off! November 3, 2008

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All 4th grade students in Burlington had the opportunity to build and launch their own model rockets.  They learned about forces, motion and rocket design.  Rocket Day reinforced the tech & engineering standards in the Science Curriculum.  This yearly event has been widely attended and supported by Burlington parents. 

 

This year the event was generously sponsored by the United States Air force communication Group of Hanscom Air force Base.  BHS graduate, Amanda Gustafson, was instrumental in acquiring funds for the project. 

Mr. Pap teaching about forces

Mr. Pap teaching about forces

 

Ms. Pavlicek rides the Rocket Car

Excited students wait for launch

Excited students wait for launch

Up and away!

Up and away!

Students watching rockets in the sky

Students watching rockets in the sky

A great day for everyone!

A great day for everyone!

Captain Harding Flies an RC Helicopter

Captain Harding Flies an RC Helicopter

We would like to thank the students, teachers and parents for all their hard work.

We would also like to thank Rick Karwan (Rick Karwan Photos) for sending us some great photos.