7 Iron rusting 铁生锈 Gauze Nails Silver nails 纱布 铁钉 银钉 Under what conditions does iron rust easily? 铁在什么条件下容易生锈？ Iron nails tend to rust in a humid environment. 铁钉在潮湿环境下容易生锈。 Try sprinkling some salt water. 洒点盐水试试。 Let's design comparative experiments to study it. 我们设计对比实验来研究吧。 My experimental protocol is ...... 我的实验方案是...... The environment I chose for comparison is ...... 我选择的对比环境是...... Experimental records of rusting of iron nails 铁钉生锈情况实验记录 The environment where the iron nail is located Underwater Half water, half air In the air 铁钉所在的环境 水中 一半水，一半空气 空气中 Rusting after one week 一周后的生锈情况 My conclusion 我的结论 Experimental records of rusting of iron nails 铁钉生锈情况实验记录 The environment where the iron nail is located Underwater In vinegar In salt water 铁钉所在的环境 水中 醋中 盐水中 ······ Rusting after one week 一周后的生锈情况 My conclusion 我的结论 What we found 我们的发现 Rust-prone environment 容易生锈的环境 Environment that is not prone to rust 不容易生锈的环境 How to prevent iron from rusting? 怎样防止铁生锈？ We can paint the iron and also ...... 我们可以给铁涂上油漆，还可以...... Find information about the pros and cons of rusting metals. 查找资料，了解金属生锈的利与弊。 |
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