Science Quiz - Grade 7 NO(1)

1. Complete the following:

  1. We can distinguish between ammonia and perfume by their different…………

• smell

• the mass 

• water

• The volume

2. ............ and ........ can float on water surface, while.............and.............. Sink in water.

3. Density is ............. of unit volume of the substance

and its measuring unit is…………….

4. .................. Is the measuring unit of mass, while…………… Is the measuring unit of Volume.

2. Choose the correct answer:

1. The volume of the liquid is calculated from the relation……………….

• a. mass / density

• b. density / mass

• c. mass x density.

• d. no correct answer.

2. If you know that the density of water is 1 gm/cm³, so the volume of 10 gm of water is ....................

• 5 cm³

• 10 cm³

• 20 cm³

• 40 cm³