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Science con IA: sounds, material and structures - Contenido educativo

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Subido el 30 de marzo de 2025 por María F.

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Unit 7. Light, Sound, Materials and Structures. Second Grade. 00:00:00
1. Light and Sound. What is light? Properties of light. What is sound? Properties of sound. 00:00:08
2. Materials. Materials. Natural and man-made materials. Properties of materials. 00:00:17
3. Structures 00:00:26
What is a structure? 00:00:29
Conditions for a good structure 00:00:32
1. Light and sound 00:00:34
What sense do you use to perceive light? 00:00:38
What sense do you use to perceive sound? 00:00:43
We use our sense of sight to see light. 00:00:46
We use our sense of hearing to hear sounds. 00:00:49
What is light? 00:00:53
Light is a type of energy. It helps us see things. 00:00:54
Light sources are things that emit light. Some are neural like the sun, lightning, and stars. 00:01:00
And others are artificial, like a flashlight, a light bulb, or a television. 00:01:07
Properties of light 00:01:13
It moves in a straight line, a ray of light. 00:01:14
It is faster than sound. In a storm, first you see the lightning. 00:01:19
Then, you hear the thunder. 00:01:24
Reflection, it bounces and goes to the opposite direction. 00:01:27
Some objects block the light and others don't. 00:01:31
Shadows happen when something blocks the light. 00:01:35
Transparent, light can pass through it. 00:01:39
Translucent, some light can pass through it. 00:01:42
Opaque, light can't pass through it. 00:01:46
What is sound? 00:01:50
Sound is a type of energy. 00:01:52
It helps us hear noises, music and voices. 00:01:54
A source of a sound is what makes that noise. 00:01:58
Some are natural, like a river, a bird or thunder. 00:02:02
And others are man-made like an airplane, a speaker or an explosion. 00:02:06
Properties of sound 00:02:11
It moves in a waves through air, water and solids. 00:02:14
Sound vibrations have two characteristics. 00:02:18
Pitch, high pitch, whistle or low pitch, drum. 00:02:22
Volume, high volume, loud or low volume, soft. 00:02:27
Practice, match the correct sentence with the picture. 00:02:32
2. Materials 00:02:35
Materials 00:02:41
Wood 00:02:43
Cardboard 00:02:44
Paper 00:02:46
Plastic 00:02:47
Straw 00:02:48
Rubber 00:02:50
Glass 00:02:51
Fabric 00:02:52
Wool 00:02:54
Leather, silk, cotton, stone, concrete, brick, diamond, clay, slate, metal, copper, iron, steel, bronze, silver, gold 00:02:55
natural wood brick diamond clay slate rubber wool leather silk cotton straw metal man-made 00:03:16
Concrete 00:03:36
Glass 00:03:37
Plastic 00:03:38
Paper 00:03:40
Cardboard 00:03:41
Properties of materials 00:03:43
Materials can be soft or hard. 00:03:46
Materials can be rough or smooth. 00:03:50
Materials can be rigid or flexible. 00:03:53
Materials can be transparent or opaque. 00:03:56
Practice 00:03:59
Circle the correct words. 00:04:00
3. Structures 00:04:07
What is a structure? 00:04:09
And structure is a group of elements that resists a load. A load can be 00:04:12
the weight of the structure, weather, rain, wind, temperature changes, the weight of people, 00:04:19
machines, furniture. Why do we build a structure? To create a separate space like a building, 00:04:27
a house or a stadium. To connect two places, a bridge or an elevator. 00:04:34
to resist the forces of nature a dam or a retaining wall conditions for a good structure 00:04:40
a good structure doesn't break a good structure doesn't lose its shape a good structure has a 00:04:48
function a good structure costs money materials and workers a good structure is beautiful 00:04:56
the end you did it 00:05:03
Materias:
Ciencias
Niveles educativos:
▼ Mostrar / ocultar niveles
  • Educación Primaria
    • Primer Ciclo
      • Primer Curso
      • Segundo Curso
    • Segundo Ciclo
      • Tercer Curso
      • Cuarto Curso
    • Tercer Ciclo
      • Quinto Curso
      • Sexto Curso
Autor/es:
Colegio JABY
Subido por:
María F.
Licencia:
Reconocimiento - Compartir igual
Visualizaciones:
3
Fecha:
30 de marzo de 2025 - 13:20
Visibilidad:
Público
Centro:
CPR INF-PRI-SEC JABY
Duración:
05′ 09″
Relación de aspecto:
1.78:1
Resolución:
1920x1080 píxeles
Tamaño:
10.85 MBytes

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