Recursos educativos human body página 115

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End-of-unit activities - The nervous system
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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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Check. Effects of heat on bodies
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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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True/false. Density
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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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Complete. Characteristics of birds
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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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Reproduction in mammals
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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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End-of-unit evaluation - The nervous system
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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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Complete. Reptiles
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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…
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Introduction - The nervous system
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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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Entry test 01 - The first civilizations: Mesopotamia and Egypt
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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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Breathing (II)
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Exchange of gases in our lungs Our body exchanges oxygen for carbon dioxide inside the pulmonary alveoli. Each alveolus is connected to a network of very small blood vessels, called capillaries. Oxygen…
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