Independent Practice: Predicting whether an object will sink or
float.
Table 1
Density of Some Common Substances
Substance
Density (g/cm3)
water
1.00
aluminum
2.70
iron
7.80
olive oil
0.92
mercury
13.5
gold
19.3
1. Using Table 1, predict which substance(s) will float in water?
______________________ will ________________ because it is ___________
dense than _________________.
2. Using Table 1, determine which substance(s) will sink in mercury?
_____________________ will _________________ because it is ____________
dense than _________________.
3. Will gold sink or float when placed in a fluid with a density of 12.7
g/cm3?
_____________________ will _________________ because it is ____________
dense than _________________.
4. The following table shows properties of four different sample materials.
One of these materials is cork, a type of wood that floats in water.
Table 2
Physical
Properties
Sample
Number
1
2
3
4
Mass
Volume
89 g
26 g
24 g
160 g
10 mL
10 mL
100 mL
100 mL
Given the density of water is 1.00 g/cm3. Which of the samples is most
likely cork?
Sample _______ is most likely __________ because its density is
______________ water, so it will _____________.
5. Using Table 1, Which substance will sink in mercury?
_____________________ will _________________ because it is ____________
dense than _________________.
6. Using Table 1, predict if aluminum will sink or float when placed in a fluid
with a density of 1.50 g/cm3?
________________ will ___________________ because it is ________________
dense than the fluid in which it is placed.
6. Using Table 2, predict if Sample 2 will sink or float when placed in
Sample 3.
Sample 2 will _______________________ when placed in Sample 3 because
it is _________________ dense than __________________.
The densities of four different woods are shown below.
Table 3
Wood Sample
Densities Type of
Wood
African
Teakwood
Balsa
Cedar
Ironwood
Density ( )g
cm3
0.98
0.14
0.55
1.23
7. Using Table 3, predict which wood will sink when placed in water?
___________________________ will sink because it is _______________ dense
than ____________________.
8. Using Table 3, predict which wood will sink when placed in a fluid with a
density of 0.75 g/cm3?
________________ will sink because it is ______________ dense than the fluid
in which it is placed.
9. Using Table 3, determine which wood you would use to build a toy boat
that can float in a lake? Why?
I would use _____________________________ because
________________________________________________________________________
________________________________________________________________________
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