Page 98 - Physics

Physics for Secondary Schools
(iii) Two cylinders are made of the same
metal shown in Figure 4.13. Both
cylinders have the same cross-
sectional area but one is longer than
the other. Which quantity is the same
for both cylinders?
Cylinder 1
Cylinder 2
Figure 4.13
(a) Density. (c) Weight.
(b) Mass. (d) Volume.
(iv)A person measures the length, width,
height, and mass of a rectangular
metal block. Which of these
measurements must be used in order
to calculate the density of the metal?
(a) Mass only. Section B
(b) Height and mass only.
(c) Length, width, and height only.
(d) Length, width, height, and mass.
(v) A liquid has a volume of 100 cm 3
and a mass of 85 g. The density of
water is 1.0 g/cm . How does the
3
density of the liquid compare with
the density of water?
(a) Its density is higher than that of
water.
(b) Its density is lower than that of
water.
(c) Its density is the same as that of
water.
(d) It is impossible to say with only
this data.
92
Physics Form 1 Final.indd 92
(vi) Figure 4.14 shows the equipment
used to determine the density of a
liquid. Which formula can be used
to accurately determine the density
of the liquid?
Figure 4.14
(a) mass of beaker and liquid - mass of beaker
volume of liquid
mass of beaker and liquid - mass of liquid
(b) volume of liquid
volume of liquid
(c) mass of beaker and liquid - mass of liquid
volume of liquid
(d) mass of beaker and liquid - mass of beaker
2. A rectangular block measures length
4.00 cm, width 2.50 cm, and height
1.00 cm.
(a) Name the instrument used
to measure the sides of the
rectangular block.
(b) Calculate the volume of the
rectangular block.
(c) If the mass of the rectangular
block is 300 g, fi nd the density
of the block.
3. Explain how each of the following
quantities differs from each other.
(a) Density and relative density.
(b) Mass and weight.
4. (a) The density of water is
1 000 kg/m . What does it imply?
3
Student’s Book Form One
16/10/2024 20:56