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Matter and materials II

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Subido el 31 de marzo de 2020 por Beatriz C.

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Tema 5, Matter and materials

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Okay, class, now let's continue our work on page 79 of your natural science book. 00:00:00
On exercise four, you will look at each picture and think and tick, is the picture correct 00:00:10
or incorrect? 00:00:21
tick the box if it is correct and do not tick if incorrect. First we have a 00:00:24
picture of bricks growing on a tree. So you must think bricks. Are bricks man-made 00:00:34
or natural. We know that on trees, flowers and fruits can grow, which are natural. 00:00:47
On trees, bricks do not grow, so that will be incorrect. Next, we have a man making 00:00:57
bricks. He is pouring hot stone into the mold and he is creating new bricks. You 00:01:11
see this is a human, a man, and so he is making something and this is correct. 00:01:24
Next, we have the man. Again, a different man. Look at the man. Is he making a 00:01:33
material? Yes or no? Please tick if you think this is correct or incorrect way 00:01:46
to man make a material. Finally, look at the bush. We see that there is glass, 00:01:55
glass cups in the bush, and we know that glass is a man-made material. Glass does 00:02:08
not grow in a bush. Bushes are natural and so they cannot grow glass. So this 00:02:20
would be, what do you think? Correct or incorrect? It is incorrect. Next let's 00:02:29
move to exercise number five. Here we have wool, plastic, cotton, wood, and glass. 00:02:40
So I will explain each one shortly to you so that you can classify in natural 00:02:56
or man-made depending on how each material is created. So first we remember from this last page 00:03:06
that wool is a natural material. It comes from sheep and other animals. So wool comes from 00:03:17
nature. Next we have plastic and plastic is hard or soft and people make plastic to use it 00:03:32
for carrying or for holding things and it can be used to create many different things. 00:03:45
So plastic is man-made. Next, cotton. Cotton is made from plants. You can see here that this is a 00:03:54
cotton plant. So is cotton man-made or natural? Please write cotton in man-made or natural, 00:04:06
depending on what you think. Finally, wood. Wood comes from trees and trees are a type of plant. 00:04:19
So because wood comes from a tree, which is natural, it is going to be a natural material. 00:04:33
Wood is a natural material. Finally, we have glass. Glass is hard and transparent, which 00:04:43
means that we can see through glass. We can see with our eyes through glass. So glass 00:04:57
is something that man makes out of using heat from sand to make glass. So glass will be 00:05:05
man-made. Finally, we have exercise six. So please just use this chart as you filled in 00:05:17
wool, plastic, cotton, wood, and glass to write natural or man-made. Wool is a 00:05:31
material. What do you think? Natural or man-made? Please write in natural next to wool 00:05:43
and continue with plastic, glass, and wood. Thank you. 00:05:54
Idioma/s:
en
Autor/es:
Beatriz
Subido por:
Beatriz C.
Licencia:
Reconocimiento - No comercial
Visualizaciones:
79
Fecha:
31 de marzo de 2020 - 9:51
Visibilidad:
Clave
Centro:
CP INF-PRI SAN PABLO
Duración:
06′ 02″
Relación de aspecto:
16:9 Es el estándar usado por la televisión de alta definición y en varias pantallas, es ancho y normalmente se le suele llamar panorámico o widescreen, aunque todas las relaciones (a excepción de la 1:1) son widescreen. El ángulo de la diagonal es de 29,36°.
Resolución:
848x480 píxeles
Tamaño:
56.18 MBytes

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