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Check. Test yourself
EduBook Organización
- 4323 visitas
Remember what you have studied in this unit and answer the questions: What are the two different types of waves? What are sources of light like? Name two classifications. What types of shadows does an…
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Remember - Air and the atmosphere
EduBook Organización
- 4276 visitas
Humans, plants and animals need air to breathe and live. Air is a mixture of gases. A layer of air covers the Earth and protects life on our planet. This layer of air is called the atmosphere. When air…
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Activities - Heat, light and sound
EduBook Organización
- 2 lo usan
- 3776 visitas
Heat, light and sound are all around us. We can feel heat from the Sun in the summer and from a radiator in the winter. We need light to see people and objects. We get light from the Sun during the day…
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Interpreta. Consumo mundial de enerxía
EduBook Organización
- 4176 visitas
Este gráfico utiliza como unidade de valor a British Thermal Unit (BTU), medida británica equivalente a 1055,05585 jules, que é a unidade do Sistema Internacional para medir a enerxía: Que…
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Vertader/fals. Com funciona un múscul (I)
EduBook Organización
- 4126 visitas
Indica si les afirmacions següents sobre els músculs són vertaderes o falses: Un múscul és antagonista d'un altre quan fa el moviment contrari. Quan fa força o moviment, el múscul es contreu,…
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Natural Science
EduBook Organización
- 3 lo usan
- 3506 visitas
Unit 8: Nutrition, breathing and circulation allergy (n): a negative reaction in our body's immune system to a certain substance, like nuts or shellfish. breathing (n): the act of inhaling oxygen…
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Introduction - Plants
EduBook Organización
- 4072 visitas
Plants are living things. They live in different places. Plants need water and the Sun to grow. They use the water and the light from the Sun to make their own food. Plants reproduce by making seeds.…
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Relaciona. El motor elèctric
EduBook Organización
- 4058 visitas
Assenyala si les frases següents es refereixen a l'alternador o al motor elèctric: Transforma l'energia elèctrica en energia mecànica o energia del moviment. El corrent elèctric fa que giri…
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Introduction - Matter and materials
EduBook Organización
- 3956 visitas
Everything around us is made of matter. Matter can be solid, like a table, liquid, like milk, or gas, like the air. All matter is made of different materials. Some things are made of wood, like a…
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Remember - Matter and materials
EduBook Organización
- 3905 visitas
Everything around us is made of matter. Matter can be solid, like a table, liquid, like milk, or gas, like the air. All matter is made of different materials. Some things are made of wood, like a…