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碗是人们的饮食工具,拿一只碗就可完成力、热、声、光等十个家庭小实验.一、物体的浮沉将空碗慢慢平放在水面上是漂浮的,而倒放或斜放在水面上则是下沉的.由此得出物体所受的浮力与排开液体所受的重力有关.二、液面升降将盛满水的碗放在平面上,在碗内放一小块冰静止后仍然是满的,待冰熔化后,观察水面变化情况.同样换用盐水也可实验.三、摩擦力与接触面粗糙程度的关系干净的碗和碗外有油的碗分别用手拿,可
The bowl is a dietary tool for people. A bowl can be used to complete ten small experiments such as force, heat, sound, and light. First, the floating of an object slowly floats on the surface of the water and floats. Or inclined on the surface of the water is sinking. From this, it is concluded that the buoyancy of the object is related to the gravity of the discharged liquid. Second, the liquid level rises and lowers the bowl full of water on the plane, in the bowl After putting a small piece of ice still, it is still full. After the ice melts, observe the change of the water surface. Also use the salt water to change the experiment. Third, the relationship between the friction and the roughness of the contact surface Clean bowl and bowl with oil outside The bowls are held by hand and can be