Saltar navegación

Activa JavaScript para disfrutar de los vídeos de la Mediateca.

1º ESO/DR NAGLER´S LABORATORY: LATITUDE AND LONGITUDE - Contenido educativo

Ajuste de pantalla

El ajuste de pantalla se aprecia al ver el vídeo en pantalla completa. Elige la presentación que más te guste:

Subido el 28 de febrero de 2021 por Alicia M.

74 visualizaciones

Más información Transcripción

Descargar la transcripción

Imagine that you're flying in a plane. Beautiful skies, amazing views, but how 00:00:01
do you know where to go? There aren't any signs floating in the air, right? So how 00:00:07
do pilots know where to land their planes? Would you like to find out? 00:00:13
Yeah, I would. In this lab we're going to be learning about the invisible lines 00:00:22
that help us navigate the world longitude and latitude this is a compass 00:00:28
it can tell you which direction you were traveling north east south west a good 00:00:45
way to remember is to remember the saying never eat soggy waffles but just 00:00:51
knowing which direction you're going isn't enough to pinpoint a specific 00:00:57
place look here let's say we're here and we want to go to that spot right there 00:01:01
We know we're going east, but how far east? Where do I stop? Is it southeast? Northeast? 00:01:07
Now imagine you were up in the air and you wanted to find this point. How would you be able to see it? 00:01:15
Yeah, I'm not seeing any dots up here. 00:01:23
That's right. Well, we can help him by drawing some lines to really find that point. 00:01:26
Can you picture these lines running all around the Earth? 00:01:33
These are called lines of longitude, and they run north and south. 00:01:38
But that's not what they're there for. 00:01:43
Hi, Dr. Nagler. It took me all night, but I finally finished hand-making that globe you wanted. 00:01:46
Excellent. Looks good. Especially the lines. 00:01:50
What do you think these longitude lines tell us? 00:01:55
Well, imagine if you could cut through one. 00:01:58
Why imagine? 00:02:01
Let's do it! 00:02:03
You cut through my globe! 00:02:08
Of course I did, and it cut very nicely. 00:02:18
You see, longitude lines run north to south, but they separate east and west. 00:02:21
To help identify these lines, we number them. 00:02:32
This line is zero degrees longitude, also known as the prime meridian. 00:02:36
Degrees in this case isn't temperature. 00:02:43
It's a unit of measure that we tell how far away from the center we are. 00:02:46
So we start with zero degrees, and we move away from the center. 00:02:52
So this line would be 10 degrees, and this one would be 20 degrees, and so on. 00:02:57
And also notice on the other side of zero, the same thing happens, 10 degrees and 20 degrees. 00:03:03
And the way we label these is which side of zero is east and west. 00:03:11
And you'll notice that this point is 10 degrees east, and this one is 10 degrees west. 00:03:17
So here is our point at 30 degrees east, but is that enough to land our plane? 00:03:25
What do you think? 00:03:31
Okay, I'm flying on that longitude, but I don't see the runway. 00:03:33
That's not enough information. 00:03:37
That's right. 00:03:39
You need to know where on the line our point is. 00:03:40
Is it down here, up here? 00:03:44
We need lines going the other way to intersect our lines of longitude. 00:03:47
So the longitude lines separate east and west. 00:03:53
What do you think these lines will do? 00:03:56
Okay, Dr. Nagler, I was able to make one more globe. 00:03:58
Please be careful with this one. 00:04:02
Of course I will. 00:04:04
I have safety glasses on. 00:04:06
I need a new job. 00:04:10
You see, I cut laterally to create latitude lines. 00:04:21
These lines go from east to west, but they separate north and south. 00:04:25
These two halves are called hemispheres, which means half a sphere or half a globe. 00:04:31
north and south. Just like the longitude lines, latitude lines are numbered beginning with zero 00:04:39
degrees in the center. This is called the equator. Let's label these lines as we did before, 00:04:46
starting with zero degrees equator and going 10 degrees north and 10 degrees south, away from zero. 00:04:52
Now let's see where our point is. The latitude lines have intersected our longitude lines 00:05:00
right at our point now we have two lines that cross and X marks the spot our 00:05:07
point is 20 degrees north and 30 degrees east these two numbers are called 00:05:14
coordinates will that be enough to land the plane okay I see it I see the runway 00:05:21
so did you learn anything useful today yes I did I learned that it takes two 00:05:29
coordinates to find yourself on the globe longitude and latitude that's 00:05:36
right latitude and longitude are invisible lines used for navigation that 00:05:42
intersect at specific points what else did we learn I learned not to give you 00:05:47
the keys to the chainsaw that's not all didn't we learn what the two halves of 00:05:53
the globe are called hemispheres and what does hemisphere mean half half of a 00:05:59
globe. That's right. And remember, the point where the hemispheres meet is labeled zero degrees, 00:06:06
and we start numbering there in both directions. Now that we've learned how longitude and latitude 00:06:13
work, you're going to find some points on the globe yourself. 00:06:19
Subido por:
Alicia M.
Licencia:
Dominio público
Visualizaciones:
74
Fecha:
28 de febrero de 2021 - 19:31
Visibilidad:
Público
Centro:
IES LA SENDA
Duración:
06′ 33″
Relación de aspecto:
1.78:1
Resolución:
640x360 píxeles
Tamaño:
47.96 MBytes

Del mismo autor…

Ver más del mismo autor

EducaMadrid, Plataforma Educativa de la Comunidad de Madrid

Plataforma Educativa EducaMadrid