Educator How-To: Make a Balancing Dipsy!

diplodocusFor those of you who have been going to HMNS for years, you may have noticed that we’ve been missing a rather large lady from our Hall of Paleontology. Our Diplodocus, “Dipsy”, was Houston’s first dinosaur unveiled in 1975 and she was de-installed in September 2013. This was her first trip from home for a well-deserved cleaning. Luckily, she’s due back at HMNS in March! We’re so excited for her to be back that we’ve even put her on our overnight shirts! In honor of her return, we’ve dedicated this month’s Educator How-to to this dynamic Diplodocus.

Dipsy can teach us quite a few things about balance! When we first installed Dispy in 1975, she was a tail dragging dino as you can see in the photo below. With further studies, they realized that large dinosaurs like the Diplodocus couldn’t possibly walk with their tail on the ground. Think of all the friction and weight! Instead, they realized that they must have used their tail as a counterbalance for their long neck and head like you can see in the illustration below. To demonstrate how Dipsy uses balance, we are going to make a balancing Dipsy!

tail draggin dipsy

Dispy’s early days at HMNS had her dragging her tail on the ground.

dipsy-illustration

Illustration of Dipsy using her tail for balance on our HMNS Overnight shirts.

How to make your own Balancing Dipsy:

1. Print a copy of Dipsy on cardstock

Dipsy-copy

2. Color your Dipsy (mine’s going on vacation, so I’ve got her wearing a festive Hawaiian shirt)

Vacation Dipsy

3. Cut out your Dipsy along the black lines.

cut-out-dipsy

 

4. If you try to balance her now, you may notice that she’s not very good at it. We need to add weight to correct her center of mass.

5. In this case we are going to use paperclips! Add paperclips to Dipsy to get her to balance. Since she is a very large and currently top-heavy dinosaur, we need to add lots of weight down low to keep her balanced. I’ve added three paperclips per foot.

paperclipped-Dipsy

6. If your students would like more of a challenge, have the students adjust the position of the paperclips and watch as her balancing point changes. See if they can get her to balance using different sized paperclips or changing the location of the paperclips. 

balancing-dipsy

The point on which something balances is in line with its center of mass. The object will be most stable (and easier to balance) if the center of mass is below the balancing point instead of above it. For regularly shaped objects like a rectangular sheet of paper the center of mass is the geometric center of the object, but it depends on the shape of the object and how the weight is distributed (imagine adding a bunch of paperclips to one side of an index card and then balancing it horizontally on a pencil eraser – the center of mass and the balancing point will be closer to one edge now).

For our Balancing Dipsy, the object is an unusual shape and has unusual weight distribution. We needed to add weights to our Balancing Dipsy to make her center of mass below where we place our finger when she is upright. With enough weight we can get Dipsy to balance on our finger or a pencil!

Dipsy is just one of many dinosaurs that use their tails to balance. On your next field trip to HMNS, you can see several dinosaurs in the Morian Hall of Paleontology that have their tails sticking out for balance. See if you can find them all! While you’re here, you can bring your own Balancing Dipsy to see our very Dipsy the Diplodocus. She’ll be back this March!

You Can Thank Science for Helping You Cook an Awesome Thanksgiving Dinner

Loosen your belts boys and girls, because we are approaching Thanksgiving, the day where diets and portion control cease to exist. To make things a bit easier for you, I have compiled some tips on how to make your Thanksgiving dinner a winner. And how do we do this? With science of course!

Turkey
friends animated GIF

When it comes to cooking turkey, the star of your Thanksgiving dinner, you have to make sure your bird comes out moist, tender, and flavorful. First thing to know is the cooking style and time depends on the parts of the turkey you are cooking. If you are going Ren-Fest style and just serving up turkey legs, a longer cooking time at a low temperature would be better to allow the tissue to break down slowly. However, if you are just serving up a turkey breast, it can be cooked at a higher temperature for a shorter period of time since there is not as much tissue as is in the legs.

Now I am going to assume that you are a Thanksgiving champion and are cooking the whole turkey. Here’s what you should do to make a winner winner turkey dinner:

  • As mentioned above, the breast and legs have different cooking times, however if you are cooking the whole turkey, this isn’t really an option. However, there is a way you can help differentiate the cooking times before putting your turkey in the oven. “Take the bird out ahead of time and let the legs warm up a little bit while you keep the breasts covered with ice packs. That way, you keep the breasts cold. The legs warm up by maybe 10, 20 degrees, and that way, when you put the bird in the oven, you’ve already built in a temperature differential. The breasts are going to end up, at a given time, less-cooked than the legs.“ – NPR- “Delicious Turkey Tips From Food Scientists
  • We have all had that dry, chewy turkey before, and I don’t know about you, but I would rather not repeat that experience. To help your turkey maintain its moist deliciousness, soak your bird in a saltwater solution prior to cooking–aka brining. Brining helps loosen the structure of the muscle fibers and increases the turkey’s water weight, these steps combined result in tender and juicy meat. Check out Butterball’s brining guide to find the correct brining time for your turkey.
  • If you are roasting the turkey, cook it on an elevated rack a few inches off the bottom of the pan to allow the heat to circulate evenly around the turkey. If your turkey is resting on the pan, the heat will not be able to fully circulate resulting in an unevenly cooked bird.
  • Have ever cut your turkey (or steak, too) while it is hot and seen the juicy deliciousness seeping out? Well, sorry my friend, but you are watching the flavor leave your meat. When your meat is still hot, the juices are still flowing and have not rested into the fibers yet. Therefore, you should allow your turkey to rest prior to carving. The rest time depends on the size of your turkey and can be anywhere from 5-20 minutes. Letting your bird rest will also make for easier carving.

Sides

  • Green beans
    funny animated GIF
    Blanching green beans brings out their vibrant green color, but you may have noticed that their color dulls over time. This is “a result of the chlorophyll molecules losing their magnesium ions in the heat.” To stop this, shock the beans with an ice bath immediately after they finish cooking.
  • Pie 
    the office animated GIF
    Who knew the secret to a flaky, yet easy to work with crust was vodka? When rolling out pie dough, water is often added to form a more cohesive crust that is easier to place into the pan. This is fine up to a certain point. Adding too much water will activate the gluten development causing the dough to lose its flakiness. However, vodka will add the extra moisture you need without activating the gluten development. (Don’t worry your pie crust won’t taste like vodka.) Source – Live Science
  • Stuffing
    television animated GIF  
    While cooking stuffing in the turkey is tradition, you may want to rethink that. Most stuffing mixes contain eggs which need to be brought up to a temperature of 165 degrees Fahrenheit in order to kill the bacteria. In order for the stuffing temperature to reach 165 degrees Fahrenheit, you risk overcooking the turkey and drying out the meat – not cool. Instead cook the stuffing on its own and serve it on the side or add it to your turkey platter after the turkey has been cooked.
  • Rolls
    bread animated GIF

    Rolls are one of the best parts of Thanksgiving in my opinion, but making it is not. If you’ve had homemade rolls you know there is nothing that you can get out of a box, carton, or frozen package that compares to the delicious fluffiness of homemade rolls. No one has the time, especially on Thanksgiving, to endlessly knead bread. Unfortunately, kneading is a necessary step in the break making process to “break down existing bonds and form stronger, straighter gluten sheets.” However, you can save your hands five minutes of kneading thanks to autolyse – i.e. let the dough rest before kneading (about 20 minutes). The resting time allows for the existing bonds to break down on their own. 

    Now get ready Thanksgiving, because we are coming for you!
    friends animated GIF

Four Ways to give your kid a great birthday at HMNS

Planning a great birthday party for your little tyke can be daunting to say the least, that’s why we’re here — to make sure your kid AND their friends AND you can have a great time at their birthday party!

To top it off we’re running a special of $50 off all remaining 2014 parties* at both of our locations** (including Deluxe Packages!) booked between September 1st-15th, 2014! Don’t miss out!

“What’s a Deluxe Package?” you ask, why it’s only the best way to celebrate in the museum. Here are the four Deluxe Package options:

1. PARTYSAURUS

Party among prehistoric beasts in HMNS’ expansive new Hall of Paleontology and enjoy a spectacular view from above. Click here for more information.

Success Kid Meme - Dinosaur Birthday Party

2. WINGED WONDERLAND

The Cockrell Butterfly Center provides a stunning backdrop for the ultimate butterfly or insect fan! Click here for more information.

Success Kid Meme - Butterfly Birthday Party

3. GALACTIC GATHERING

You and your guests will enjoy an out of this world party in the Arnold Space HallClick here for more information.

Success Kid Meme- Space Birthday Party

4. HALL OF ANCIENT EGYPT

Kids will walk like an Egyptian after exploring the Hall of Ancient Egypt in this Deluxe party! Click here for more information.

Success Kid Meme - Egypt Birthday Party

 

BONUS ADD-ON: SHARK! EXHIBIT PRIVATE TOUR

For a limited time, you can add a private SHARK! exhibit tour (complete with shark touch tank) to any HMNS birthday package!

Success Kid Meme - Shark Birthday Party

 

With all of these great options it’s no wonder why parents and kids alike love HMNS Birthday Parties! Book your 2014 party by September 15 and receive $50 off! Email Birthdays@HMNS.org or call 713-639-4646 to reserve yours today.

 

*To receive the $50 discount, your party must take place in 2014 and must be booked by September 15, 2014
**Some birthday party options are not be available at the HMNS Sugar Land location, please contact one of our Party Planners for more information at Birthdays@HMNS.org or 713-639-4646

STEM & GEMS: Chemical Engineer Stevie Showalter Talks Nerdy To Us

Editor’s Note: As part of our annual GEMS (Girls Exploring Math and Science) program, we conduct interviews with women who have pursued careers in science, technology, engineering, or math. This week, we’re featuring Stevie Showalter, ALLEX Program Participant for Air Liquide.

Nerd Alert

HMNS: How old were you when you first become interested in science/technology/engineering and/or math?
Showalter:
It was literally second grade when I first learned the word chemistry. Then I was hooked. I wanted to be a chemist until high school when my parents and teachers swayed me to chemical engineering.

HMNS: Was there a specific person or event that inspired you when you were younger?
Showalter:
I had two really awesome chemistry/science teachers and two really awesome math teachers that pushed me to do my best and learn as much as I could.

HMNS: What was your favorite project when you were in school?
Showalter:
I always LOVED science fair season! I didn’t do it in high school because it wasn’t offered, but in 8th grade I advanced to the regional level with my project. My project was the efficiencies of different light bulbs (incandescent, fluorescent, black light) by measuring the temperature they gave off.

HMNS: What is your current job? How does this relate to science/technology/engineering/math?
Showalter:
Currently I work as an engineer for Air Liquide in their rotational training program. My last rotation I worked at a primary production plant making liquid and gaseous nitrogen, oxygen, and argon by separating those elements from the air through cryogenic distillation. My rotation now is all about maintenance and reliability. I currently evaluate all the ‘mini’ plants (I guess you could say) that we have at customer sites to see how we can increase their productivity.

HMNS: What’s the best part of your job?
Showalter:
The fact that our product reaches soooooo many people. You may not know it, but our carbon dioxide is in Pepsi and Coke. Our oxygen is the supply at many hospitals. Our nitrogen helps make different products like tires, rubber, car seats, and so many other things!

HMNS: What do you like to do in your spare time?
Showalter:
Read, go on bike rides, try new things and travel!

HMNS: What advice would you give to girls interested in pursuing a STEM career?
Showalter:
Just keep going! It’s fun and exciting and so satisfying to see your math and science in action!

HMNS: Why do you think it’s important for girls to have access to an event like GEMS?
Showalter:
To encourage them to pursue their geeky interests! It’s ok to be a nerd sometimes! Nerds and geeks run the world! (It’s ok that I say this, because I’m quite a nerd/geek)