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Recursos educativos
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Reflection and refraction of light
EduBook Organización
- 2846 visitas
Objects reflect light When light shines on an object, sometimes it passes through the object and other times it reflects off it. When an object reflects light, we can see it. Mirrors A mirror is a…
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True/false. The stars and the Sun
EduBook Organización
- 2779 visitas
Are the following sentences true or false? The Sun rotates in an anticlockwise direction. The surface of the Sun is hotter than its interior. The diameter of the Sun is a hundred times that of the…
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Summaries - The Atmosphere
EduBook Organización
- 2784 visitas
1. Parts of the atmosphere The atmosphere is a layer of gas that surrounds the Earth. It has five layers: the troposphere, the stratosphere, the mesosphere, the thermosphere and the exosphere. The…
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An example of the overexploitation of water
EduBook Organización
- 2752 visitas
The Ebro Delta has a surface area of 320 square kilometres. It is the second largest wetland area in the western Mediterranean after the French Camargue. The Delta is home to many different species of…
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Unit 9: Motion and forces
EduBook Organización
- 2740 visitas
Accelerate (v): to go faster; to increase in velocity. apparent weight (n): the total sum of forces acting on a body. area (n): a quantity which expresses the extent of a twodimensional surface.…
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CERN. Experiments and Projects / The Challenges of LHC Civil Engineering
Xtec Organización
- 2744 visitas
A mosaic of works, structures and workers of differents crafts and origins. Three consulting consortia for the engineering and the follow-up of the works. Four industrial consortia for doing the job. A…
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Summaries - Weather and climate
EduBook Organización
- 2687 visitas
1. The atmosphere The atmosphere is a gaseous layer more than 1000 m thick that surrounds the Earth and that serves to: Prevent the Sun’s rays from directly reaching the Earth’s surface. Protect the…
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Choose. Innovations in Italian sculpture and painting
EduBook Organización
- 2675 visitas
Do the following artistic innovations refer to sculpture or painting?: Mythological themes were added, especially nudes, busts and equestrian figures. Curves predominated, to give the work a sense of…
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Introduction - The Universe and our Solar System
EduBook Organización
- 2674 visitas
Since ancient times, humans have tried to explain the nature of the Universe. For centuries it was thought that the Earth was a flat surface. People believed that everything in the sky rotated around…
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Analyse. Paper consumption
EduBook Organización
- 2649 visitas
Read the text and do the activities: Paper consumption Our high paper consumption is having three serious negative effects on the environment: –Every two seconds, an area of trees equivalent to the…
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