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Did you know?
EduBook Organización
- 1988 visitas
The blue whale is the largest animal that has ever lived on Earth; it can measure over 30 m and weigh up to 130 tonnes. When a blue whale calf stops drinking its mother's milk, it measures 15 m.…
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Compare the photos
EduBook Organización
- 1986 visitas
Look carefully at these two photos and answer the questions: In which of the two species has internal fertilisation taken place? Which of the two species is viviparous? ¿Cuál de las dos especies…
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The sense organs adapt
EduBook Organización
- 1981 visitas
2.1. The sense organs The sense organs receive stimuli from the environment. They are usually found close to the surface at the front of the body. An animal's sense organs determine how it perceives…
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Invetigate. Learn to observe different kinds of change in matter
EduBook Organización
- 1973 visitas
In this experiment you will observe physical and chemical changes in matter. Follow the instructions carefully. Copy and complete the table below. Place a half spatula of calcium carbonate into a test…
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Check. Motion
EduBook Organización
- 1974 visitas
Remember what you have studied in this section and answer the questions: Why do we need an origin as a reference point to know the position of a moving object? With a classmate, say what trajectories…
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Final Autoevaluation 9.08 - Motion and forces
EduBook Organización
- 1974 visitas
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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Check. Renewable sources of energy
EduBook Organización
- 1976 visitas
Remember what you have studied in this section and answer the questions: Ask a classmate to define panel, crop, blade, dam and harness. Give two different uses of solar energy. Describe how geothermal…
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Choose. Increase in heat and temperature
EduBook Organización
- 1978 visitas
Choose the correct answer: What is specific heat of a substance? What happens when a substance has a higher specific heat? What does a body with a larger mass need?
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Final Autoevaluation T12 07 - Waves. Light and sound
EduBook Organización
- 1991 visitas
Answer: Name the primary colours. What are the primary colours of pigments? What color is obtained by mixing the colour red with green? What colour is obtained by mixing the colour magenta and cyan?
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Choose. Transport and trade
EduBook Organización
- 1972 visitas
Choose the correct answer: What originally caused the need for a better transport network? How were developments in land transport applied to maritime transport? What is the basis of the market economy?…