Share Science 4 - Unit 1.4 - Different types of skeletons
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What is an endoskeleton? 什么是内骨骼？
A skeleton inside the body. 身体内部的骨骼。
What is an exoskeleton? 什么是外骨骼？
A skeleton on the outside of the body. 身体外部的骨骼。
What does the word "endo" mean? "endo"这个词是什么意思？
Inside. 内部。
What does the word "exo" mean? "exo"这个词是什么意思？
Outside. 外部。
What is a vertebrate? 什么是脊椎动物？
An animal with an endoskeleton and a spine. 有内骨骼和脊柱的动物。
What is an invertebrate? 什么是无脊椎动物？
An animal with an exoskeleton and no spine. 有外骨骼但没有脊柱的动物。
Which animals are vertebrates? 哪些动物是脊椎动物？
Humans, dogs, cats, birds, and fish. 人类、狗、猫、鸟和鱼。
Which animals are invertebrates? 哪些动物是无脊椎动物？
Insects, spiders, crabs, and snails. 昆虫、蜘蛛、螃蟹和蜗牛。
True or False: All animals have the same kind of skeleton. 对还是错：所有动物都有相同种类的骨骼。
False. 错。
True or False: Humans are vertebrates. 对还是错：人类是脊椎动物。
True. 对。
True or False: Insects are vertebrates. 对还是错：昆虫是脊椎动物。
False. 错。
Fill in the blank: An animal with a spine is called a ______. 填空：有脊柱的动物叫做______。
Vertebrate. 脊椎动物。
Fill in the blank: An animal without a spine is called an ______. 填空：没有脊柱的动物叫做______。
Invertebrate. 无脊椎动物。
What is an identification key? 什么是鉴定检索表？
A set of questions that helps you identify an animal. 一组帮助你识别动物的问题。
What does an identification key help scientists do? 鉴定检索表帮助科学家做什么？
Identify and group animals. 识别和分组动物。
Which of these is a vertebrate? A) Spider B) Crab C) Dog D) Snail 以下哪个是脊椎动物？A) 蜘蛛 B) 螃蟹 C) 狗 D) 蜗牛
C) Dog. C) 狗。
