Extra Explaining Questions - MEASUREMENT

MEASUREMENT

1. 1.

   Correct the mistakes in the student's answer about floating and sinking.

   A cork floats in water because its density is less than water. A stone sinks because its density is greater than water.
2. 2.

   Explain the effect when kerosene is mixed with water in a beaker.

   Kerosene floats on water because it is less dense than water.
3. 3.

   Why do bodies weigh more on Earth than on the Moon?

   The Moon has weaker gravitational force (about 1/6 of Earth's gravity).
4. 4.

   Why does 1 kg of water have smaller volume than 1 kg of steam?

   Water molecules are closely packed giving higher density than steam.