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潜水艇是靠改变自身重实现潜水和上浮的。由于它能潜入水下,行动隐蔽,军事上常用来侦察敌情,攻击敌人,平常多用于海底考察、水下运输。学习“浮力的应用”之后,同学们对潜水艇非常感兴趣。这里介绍一种取材容易、制作简便的方法,供同学们参考。 材料:包装电器的泡沫塑料一块,直径约1.6厘米、长约16厘米的试管一支,两孔橡胶塞(与试管配套)一个,长17厘米玻璃管一支,长5厘米玻璃管一支,一次性注射器一
Submarines rely on changing their weight to achieve diving and floating. Because it can dive into the water, action hidden, the military is often used to detect the enemy, attack the enemy, usually used for undersea inspection, underwater transport. After studying “buoyancy application”, students are very interested in submarines. Here is a introduction of a simple, easy to create methods for students to reference. Material: a piece of plastic foam electrical packaging, a diameter of about 1.6 cm, a test tube length of 16 cm, two holes rubber plug (with test tube supporting a), a 17 cm long glass tube, a 5 cm long glass tube, Disposable syringes one