Physics & Ict week : 7 grades

Which one of the following shows only units of length?

• l, Å, kg

• m, m³, s

• Å, m, km

• dam, g, m²

The density of gold is 19.3 g/cm³.

What is the mass of 10 cm³ gold?

• 19.3 g

• 0.193 g

• 1.93 g

• 193 g

How many seconds are equivalent to

5 min?

• 30 s

• 60 s

• 120 s

• 300 s

What is the mass of a copper cube of side 2 cm?

(Take dcopper = 9 g/cm³)

• 0.18 g

• 72 g

• 180 g

• 36 g

How many minutes are there between 05:30 and 21:15 ?

• 715

• 945

• 1595

• 900

What is the volume of 60 g wood?

(dwood = 0.6 g/cm³)

• 10 cm³

• 36 cm³

• 100 cm³

• 360 cm³

What is the relationship between the volume and density of objects which have equal masses?

• The object with the greatest volume has the

  greatest density.

• The object which has the lowest volume has the

  lowest density.

• The object which has the greatest volume has

  the lowest density.

• None of the above.

What is the unit of area?

• m

• m²

• m³

• l

2 ml is equal to:

• 2 m³

• 20 m³

• 2 cm³

• 20 cm³

A regular container of base area

100 cm2 and height 5 cm is half-filled with water.

What is the volume of the water?

• 250ml

• 500ml

• 100ml

• 200 ml