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Complete. Blood circulation and the heart
EduBook Organización
- 2378 visitas
Complete these sentences with the correct words: The heart contains four . The allow blood to pass from the atrium to the ventricle, but not in the opposite direction. The human bloodstream follows a…
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Final self-evaluation 7 - The Atmosphere
EduBook Organización
- 2219 visitas
Complete the text with the missing words. Some words can be used more than once: water – high – anticyclones – low – heats – opposite cyclones – cools – cold – lighter – sea –…
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Video: The Future of Publishing
Esl video Organización
- 1601 visitas
This 2 minute video conveys a message when every line is read top to bottom and the exact opposite when it is read bottom to top. Students may discuss their reading habits and try to write something…
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Forces in everyday life. Equilibrium
EduBook Organización
- 4460 visitas
5.1. Motive force Motive force, Fm, is the force which makes an object move. For example, the force exerted by the engine of a plane which allows the plane to fly. 5.2. Friction Friction, Ffrict, is the…
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Match. Forces and their characteristics
EduBook Organización
- 3763 visitas
Match the types of forces with their characteristics. The force is perpendicular to the surface and if the surface is horizontal, its magnitude is equal to the weight of the object. Objects held by…
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Calculate. Forces
EduBook Organización
- 3238 visitas
Remember what you have studied in this section and answer the questions: A dynamometer has a spring with a modulus of elasticity k = 150 N/m. What force will be required to extend it 30 cm? Calculate…
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Analyse a text
EduBook Organización
- 3141 visitas
The feeding habits of starfish Starfish have a voracious appetite; in one week an adult starfish can devour over fifty clams or small oysters. When an oyster is attacked, it closes its valves, but the…
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BT Personal Skills Journey: Leadership
Tiching explorer Organización
- 4200 visitas
This reading defines an effective leader as somebody who inspires and motivates a team. The text explores different styles of leadership: official, expert, team-builder, dictatorial. It also…
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True / False. How do muscles move?
EduBook Organización
- 2500 visitas
Are these sentences true or false? We only use our muscles to produce movement. When we produce movement or force, our muscles become shorter and thicker because they contract. When the muscle…
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Complete. Dilation and contraction
EduBook Organización
- 2483 visitas
Complete the text with the correct words: heat contraction dilations mass temperature dilation material When objects heat up, the amount that they increase in temperature depends on three things, their…
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