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Dragster Test Activity - Contenido educativo

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Subido el 28 de mayo de 2007 por EducaMadrid

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NASA Connect segment involving students in a hands-on activity that simulates the research from the ALDF test track. The students use an Effervescent Non-combustible Dragster to test different ratios of water and effervescent tablets then students graph the data.

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NASA Connect traveled northwest to Richmond, Virginia to conduct the student activity for 00:00:00
today's program. 00:00:07
Hi! 00:00:08
We're at Chandler Middle School in Richmond, Virginia. 00:00:09
NASA Connect asks us to help you understand how to do this show's student activity. 00:00:13
Earlier we learned that NASA Langley's Aircraft Landing Dynamics Facility, or ALDEF, uses 00:00:19
a carriage, pressurized water, and a test track to test tires. 00:00:25
Let's simulate the research they do at ALDEF using the effervescent non-combustible dragster, 00:00:30
or ENCD. 00:00:35
You'll test different ratios of water and effervescent tablets to propel the dragster 00:00:36
down a track. 00:00:42
Then you'll measure the distance your dragster travels and create graphs to analyze the results, 00:00:43
just like NASA researchers do. 00:00:49
The instructions for the entire student activity are found in the Educator's Lesson Guide, 00:00:51
so make sure your teacher has it. 00:00:56
Before we can test our dragster, we need to prepare three things, the dragster, the propulsion 00:00:58
device, and the test track. 00:01:04
First, let's make the dragster. 00:01:06
The materials you need, like milk tops and straws, are easy to find. 00:01:08
After you've made the dragster, it's time to assemble the propulsion device. 00:01:13
This is made by using a shoebox. 00:01:18
Finally, prepare the test track, kind of like the one at ALDEF. 00:01:21
This next step is very important for making accurate measurements. 00:01:25
Now you're ready to begin testing your dragster. 00:01:29
Make sure you have your safety goggles on. 00:01:32
Place your dragster behind the starting line and slide the skewer on the shoebox into the 00:01:34
straw on the dragster. 00:01:39
Make sure you line up the dragster so that the front wheels are on zero. 00:01:41
Place your foot into the shoebox to hold it in place during the test. 00:01:46
Let's conduct the trials. 00:01:50
To propel our dragster down the track, we'll use a ratio of an effervescent tablet to water. 00:01:52
For the first trial, use the ratio of half a tablet of fuel to two teaspoons of water. 00:01:58
Fill the film canister with the water and hold it near the front of the shoebox. 00:02:04
Quickly drop the fuel tablet into the canister, snap on the lid, attach the canister to the 00:02:09
shoebox, and stand back. 00:02:14
Average the distance your dragster traveled and record that distance on the data sheet. 00:02:17
After every trial, rinse the film canister with clean water and dry it with a paper towel. 00:02:22
Now, repeat the trial using the same ratio of water to fuel and record the distance traveled. 00:02:28
Average the distance traveled for the two trials. 00:02:34
Remember how NASA engineers used prediction to determine which runway was best for the 00:02:37
space shuttle? 00:02:42
Let's do the same. 00:02:43
Look at your first trial and predict what size tablet might propel your dragster a greater 00:02:45
distance. 00:02:50
After you choose a different size tablet, run two trials with the new ratio. 00:02:51
Be sure to use the same amount of water. 00:02:57
Average the results like you did before and record on the data sheet. 00:03:00
Based on your findings, predict another size tablet that might propel your dragster an 00:03:03
even greater distance. 00:03:08
Run two trials on the new ratio and average the distance. 00:03:11
After you've completed all your trials, your teacher will get you started on graphing your 00:03:14
data, then help you understand how to analyze the results. 00:03:19
Now, how can we display the data that we collected? 00:03:23
Think about the information that we collected and how we are going to compare it on the 00:03:27
chart. 00:03:32
Now that we have our graph displayed, I would like a member from each of the groups to come 00:03:33
up and to plot the average of their trial run on the chart. 00:03:39
Now that we've finished and we've collected all of our data, it is now time to analyze 00:03:44
it. 00:03:55
What type of graph is it? 00:03:56
Is it a bar graph? 00:03:57
Is it a line graph? 00:03:58
Or is it a scatter plot? 00:03:59
What was the maximum distance our dragster traveled? 00:04:00
What tablet ratio produced the greatest distance? 00:04:07
Do you think there is another tablet ratio that could produce an even greater distance? 00:04:10
Okay, how can we find it out? 00:04:15
Let's test it! 00:04:18
NASA Connect would like to thank the Hampton Roads section of the AIAA for their help with 00:04:24
the classroom activity. 00:04:29
Hey teachers! 00:04:31
If your students want to conduct this awesome activity, then visit the NASA Connect website 00:04:32
and download the lesson guide for this program. 00:04:37
And kids, make sure you visit our site too. 00:04:39
There are lots of exciting activities for you to check out. 00:04:42
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Idioma/s:
en
Materias:
Matemáticas
Niveles educativos:
▼ Mostrar / ocultar niveles
      • Nivel Intermedio
Autor/es:
NASA LaRC Office of Education
Subido por:
EducaMadrid
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
537
Fecha:
28 de mayo de 2007 - 16:54
Visibilidad:
Público
Enlace Relacionado:
NASAs center for distance learning
Duración:
04′ 45″
Relación de aspecto:
4:3 Hasta 2009 fue el estándar utilizado en la televisión PAL; muchas pantallas de ordenador y televisores usan este estándar, erróneamente llamado cuadrado, cuando en la realidad es rectangular o wide.
Resolución:
480x360 píxeles
Tamaño:
28.73 MBytes

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