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Types of Volcanoes
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NASA Why? Files segment describing three different varieties of volcanoes.
Hi, my name is Robert Bryan, a fifth grade student in Mr. Thomas' class.
00:00:00
What is your project?
00:00:07
Well, we have been studying volcanoes, and we have found out that there are three basic types of volcanoes.
00:00:09
What are they?
00:00:13
Let me show you some of the models that we've made, then.
00:00:14
This one is a model of a composite volcano.
00:00:17
Its eruptions vary between quiet and violent ones.
00:00:20
When the volcano has a violent one, it throws out ash and dust, creating a tephra layer.
00:00:23
Wow, that's cool. What are the quiet eruptions like?
00:00:28
That is when the volcano erupts lava, like this.
00:00:31
Wow, that's cool. What are the other two types?
00:00:34
Another volcano is a cinder-cutting volcano.
00:00:37
This volcano only erupts ash and dust, like this.
00:00:41
And there is a shield volcano.
00:00:48
Shield? You mean like what knights used to defend themselves?
00:00:50
Well, sort of.
00:00:53
Take a look at our model.
00:00:55
As you can see, the lava flows differently.
00:00:57
It forms very flat layers, and these layers have very broad and gently sloping sides.
00:01:00
That's interesting. We learned a lot. Thanks for your help.
00:01:05
Bye from the NASA Wildfiles Kids Club, Manhattan, Virginia.
00:01:10
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- Idioma/s:
- 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:
- 400
- Fecha:
- 28 de mayo de 2007 - 15:32
- Visibilidad:
- Público
- Enlace Relacionado:
- NASAs center for distance learning
- Duración:
- 01′ 16″
- 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:
- 7.76 MBytes
