Tennessee Science Grade 7

Chapter 2: Cells

Calculate a Ratio

1
Calculate the ratio of surface area to volume for a cube that is 3 cm long.
A)1.8 cm2/cm3
B)2 cm2/cm3
C)3 cm2/cm3
D)2.2 cm2/cm3
2
Calculate the ratio of surface area to volume for a cube that is 3 cm long. What happens to this ratio as the size of the cube decreases?
A)it increases
B)it decreases
C)no change
D)it becomes negative
3
Calculate the ratio of surface area to volume for a cube that is 5 cm long.
A)1.8 cm2/cm3
B)2 cm2/cm3
C)1.2 cm2/cm3
D)0.8 cm2/cm3
4
Calculate the ratio of surface area to volume for a cube that is 5 cm long. What happens to this ratio as the size of the cube increases?
A)it increases
B)it decreases
C)no change
D)it becomes negative
5
Calculate the ratio of surface area to volume for a cube that is 2.5 cm long.
A)1.6 cm2/cm3
B)2 cm2/cm3
C)2.2 cm2/cm3
D)2.4 cm2/cm3
6
Calculate the ratio of surface area to volume for a cube that is 2.5 cm long. What happens to this ratio as the size of the cube decreases?
A)it increases
B)it decreases
C)no change
D)it becomes negative
7
Calculate the ratio of surface area to volume for a cube that is 4.5 cm long.
A)1.0 cm2/cm3
B)0.8 cm2/cm3
C)1.3 cm2/cm3
D)1.8 cm2/cm3
8
Calculate the ratio of surface area to volume for a cube that is 4.5 cm long. What happens to this ratio as the size of the cube increases?
A)it becomes negative
B)it increases
C)no change
D)it decreases
9
If a 3-cm cube doubled just one of its dimensions, what would happen to the ratio of surface area to volume?
A)it increases
B)it decreases
C)no change
D)it becomes negative
10
If a 2.5-cm cube doubled just one of its dimensions, what would happen to the ratio of surface area to volume?
A)it decreases
B)it increases
C)no change
D)it becomes negative
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