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Check. Effects of heat on bodies
EduBook Organización
- 3406 visitas
Remember what you have studied in this section and answer the questions: Which factors affect the increase in temperature that a body experiences when it is heated? What is the specific heat of a…
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Complete. Characteristics of birds
EduBook Organización
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Complete the sentences with the correct words: beak nest constant wings oviparous The upper limbs of birds take the form of . Birds are warm-blooded animals. Their body temperature is . Birds do not…
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End-of-unit activities - The nervous system
EduBook Organización
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Right now, you are reading these words and you understand them. If you see food when you are hungry, your mouth starts to water. If you burn your hand, you move it away immediately. You automatically do…
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True/false. Density
EduBook Organización
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Are the sentences true or false? An object that occupies 2805 mm3 and has a mass of 1.3 g floats on water. Density is calculated using the mass and the temperature of a body. A substance floats when it…
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Think about it. The physical properties of matter
EduBook Organización
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Remember what you have studied in this section and answer the questions: Can solids be compressed? Give arguments for and against this idea. All materials expand when you heat them. Why? →…
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Reproduction in mammals
EduBook Organización
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3.1. Reproduction in mammals Mammals reproduce by internal fertilisation. They are viviparous. Males have a penis that they use to introduce sperm into the female's body. Fertilisation then takes…
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Entry test 01 - The first civilizations: Mesopotamia and Egypt
EduBook Organización
- 3003 visitas
Complete the following text with the correct word below: pyramid – afterlife – pharaoh – hieroglyphics – mummification – sarcophagus The king of ancient Egypt, or , had absolute power. When he…
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End-of-unit evaluation - The nervous system
EduBook Organización
- 2994 visitas
Right now, you are reading these words and you understand them. If you see food when you are hungry, your mouth starts to water. If you burn your hand, you move it away immediately. You automatically do…
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Complete. Reptiles
EduBook Organización
- 2910 visitas
Complete the following sentences with the missing words: were the first vertebrates to live completely on land. The bodies of snakes are covered in . Reptiles have four limbs that end in toes. Most…