第四课 Lesson Four 1.做一块卵石 Make a pebble 2.酒精灯、大口玻璃瓶（有盖）碎砖块。 Alcohol lamp, big mouth glass bottle (with cover) broken brick. 3.搜集有关卵石形成的资料。 Collect information on the formation of pebbles. 4.嗨，我的名字叫卵石，我有什么特点？ Hi, my name is pebble. What's my characteristic? 5.做一块卵石 Make a pebble 6.大自然中的卵石是怎样形成的？ How do pebbles form in nature? 7.温度会对岩石造成破坏吗？ Does temperature damage rocks? 8.回忆一下，风化作用对岩石有什么影响？ Recall, what effect does weathering have on rocks? 9.位于地壳表面或接近地面的岩石受到温度、水、植被等因素的影响，会发生破碎或成分变化，逐渐崩解、分离为大小不等的岩屑或土层，岩石的这种变化称为风化。 Under the influence of temperature, water, vegetation and other factors, rocks on the surface of the earth's crust or close to the ground will break up or change in composition, and gradually disintegrate and separate into rock fragments or soil layers of different sizes. This change of rocks is called weathering. 10.引起岩石这种变化的作用称为风化作用。 The action that causes this change of rock is called weathering. 11.海边的卵石是怎样形成的？ How do pebbles form by the sea? |
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