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Think about it. What plants need
EduBook Organización
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Remember what you have studied in this section and answer the questions: Why do plants sometimes need fertilisers to grow well? How does the way trees and animals get food differ? Which are autotrophs…
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Analyse a photograph
EduBook Organización
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This photo shows an eruption of Mount Etna, in Sicily. Describe what you see in the photograph. Notice the lava flowing down the mountainside. What is it like? Do you think there could be any towns or…
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Final Autoevaluation 9.08 - Motion and forces
EduBook Organización
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Answer true or false: Friction is a type of force. Friction is the force between an object and the surface on which the object moves. The effect of friction is equal to the movement. The friction value…
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Talk about it. Obtaining and using energy
EduBook Organización
- 2395 visitas
Look at the pictures and answer the questions: Is the Sun a source of energy? And a bonfire? List five sources of energy. Which of them could run out? Will we always have oil to use? Name a source of…
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Summaries - Heat and temperature
EduBook Organización
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1. Energy transfer: heat Heat or thermal energy is the energy that is transferred from hot bodies to cold bodies. All the particles that make up bodies have internal energy; the particles in a hot body…
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Match. Origins of heat
EduBook Organización
- 2400 visitas
Choose the correct answer: What other words do we use to describe heat? What is a heat source? How is the Sun a heat source? Why when we rub two sticks of wood together do we generate fire?
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Check. Materials that conduct and insulate heat
EduBook Organización
- 2394 visitas
Remember what you have studied in this section and answer the questions: What are the three ways by which heat is propagated? Give one example of each. Does matter move in convection? And in radiation?…
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Calculate. The nature of light (1)
EduBook Organización
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Calculate how far light travels in air in 20 s. In 20 s, light will travel .
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Look. Main periods of the 18th century
EduBook Organización
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Look at the timeline. Which dynasty began to reign in Spain in the 18th century? Name the monarchs.
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Match. Concepts of the birth of industry
EduBook Organización
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Match the definition with a concept: Machine invented by James Watt that burned coal and became a symbol of the Industrial Revolution. Textile imported from India that was later banned in order to…