Question 1

A metal block has a density of 5000 kg per cubic meter and a volume of 2 cubic meters. What is the block's mass?

Accepted Answer

A) 1000 kg 
B) 2500 kg 
C) 5000 kg 
D) 10,000 kg 
E) none of the above 
A) 1000 kg 
B) 2500 kg 
C) 5000 kg 
D) 10,000 kg 
E) none of the above D

Question 2

A metal block has a density of 5000 kg per cubic meter and a mass of 15,000 kg. What is its volume?

Accepted Answer

A) 0.33 cubic meters 
B) 3 cubic meters 
C) 5 cubic meters 
D) 15 cubic meters 
E) none of the above 
A) 0.33 cubic meters 
B) 3 cubic meters 
C) 5 cubic meters 
D) 15 cubic meters 
E) none of the above B

Question 3

When weight is applied to the top of a stone arch, the stone blocks in the arch undergo

Accepted Answer

A) tension. 
B) compression. 
C) expansion. 
D) none of the above 
A) tension. 
B) compression. 
C) expansion. 
D) none of the above B

Question 4

Which has more skin?

Accepted Answer

A) an elephant 
B) a mouse 
C) both the same 
A) an elephant 
B) a mouse 
C) both the same

Question 5

If an elephant grows proportionally to twice its height, the area of its ears would be about

Accepted Answer

A) twice. 
B) four times more. 
C) six times more. 
D) eight times more. 
E) none of the above 
A) twice. 
B) four times more. 
C) six times more. 
D) eight times more. 
E) none of the above

Question 6

The metal in a chunk of copper or iron is composed of

Accepted Answer

A) crystals. 
B) non-crystalline fibers. 
C) amorphous particles. 
D) none of the above 
A) crystals. 
B) non-crystalline fibers. 
C) amorphous particles. 
D) none of the above

Question 7

If the mass of an object were doubled while its volume remained the same, its density would

Accepted Answer

A) be half. 
B) double. 
C) stay the same. 
D) be four times as great. 
A) be half. 
B) double. 
C) stay the same. 
D) be four times as great.

Question 8

Flatten a spherical meatball into a hamburger and you increase its

Accepted Answer

A) surface area. 
B) volume. 
C) both of these 
D) none of these 
A) surface area. 
B) volume. 
C) both of these 
D) none of these

Question 9

The effects of scaling are beneficial to small creatures

Accepted Answer

A) that get wet. 
B) that fall from great heights. 
C) who are hungry. 
D) all of the above 
E) none of the above 
A) that get wet. 
B) that fall from great heights. 
C) who are hungry. 
D) all of the above 
E) none of the above

Question 10

A 1-centimeter cubed sugar cube scaled up by a factor of 10 has a total surface area of

Accepted Answer

A) 60 cm2. 
B) 600 cm2. 
C) 6000 cm2. 
D) none of the above 
A) 60 cm2. 
B) 600 cm2. 
C) 6000 cm2. 
D) none of the above

Question 11

Consider the fictional case of the incredible shrinking woman. If a fictional shrinking woman shrinks to 0.1 her original height, her total skin area shrinks to

Accepted Answer

A) 0.1 times its original value. 
B) 0.01 times its original value. 
C) 0.001 times its original value. 
D) 0.0001 times its original value. 
E) none of the above 
A) 0.1 times its original value. 
B) 0.01 times its original value. 
C) 0.001 times its original value. 
D) 0.0001 times its original value. 
E) none of the above

Question 12

In cold weather, your hands will be warmer if you wear

Accepted Answer

A) gloves. 
B) mittens. 
C) both the same 
A) gloves. 
B) mittens. 
C) both the same

Question 13

The strength of a beam is most related to its

Accepted Answer

A) cross section. 
B) length. 
C) both of these 
A) cross section. 
B) length. 
C) both of these

Question 14

If you hold two objects that have the same weight density, then they

Accepted Answer

A) may have unequal mass densities. 
B) have equal mass densities. 
C) are equal in weight. 
A) may have unequal mass densities. 
B) have equal mass densities. 
C) are equal in weight.

Question 15

Which ball is more elastic?

Accepted Answer

A) a common rubber ball 
B) a steel ball 
C) both the same 
A) a common rubber ball 
B) a steel ball 
C) both the same

Question 16

Tripling the linear size of an object multiplies its area by

Accepted Answer

A) 3 and its volume by 9. 
B) 9 and its volume by 18. 
C) 9 and its volume by 27. 
D) 27 and its volume by 81. 
E) none of the above 
A) 3 and its volume by 9. 
B) 9 and its volume by 18. 
C) 9 and its volume by 27. 
D) 27 and its volume by 81. 
E) none of the above

Question 17

Stone slabs are stronger under

Accepted Answer

A) tension. 
B) compression. 
C) both of these 
D) none of these 
A) tension. 
B) compression. 
C) both of these 
D) none of these

Question 18

When a load is placed on the middle of a horizontal beam supported at each end, the top part of the beam undergoes

Accepted Answer

A) tension. 
B) compression. 
C) either of these 
D) none of these 
A) tension. 
B) compression. 
C) either of these 
D) none of these

Question 19

Compared with a solid steel bar having a rectangular cross-section, an I-beam has the advantage of

Accepted Answer

A) being lighter. 
B) being stronger per bodyweight. 
C) both of these 
D) neither of these 
A) being lighter. 
B) being stronger per bodyweight. 
C) both of these 
D) neither of these

Question 20

Support a horizontal toothpick at both ends. Then do likewise for a log of the same kind of wood. There is more sag in the

Accepted Answer

A) toothpick. 
B) log. 
C) same in each 
A) toothpick. 
B) log. 
C) same in each

Exam 12: Solids

A metal block has a density of 5000 kg per cubic meter and a volume of 2 cubic meters. What is the block's mass?

A metal block has a density of 5000 kg per cubic meter and a mass of 15,000 kg. What is its volume?

When weight is applied to the top of a stone arch, the stone blocks in the arch undergo

Which has more skin?

If an elephant grows proportionally to twice its height, the area of its ears would be about

The metal in a chunk of copper or iron is composed of

If the mass of an object were doubled while its volume remained the same, its density would

Flatten a spherical meatball into a hamburger and you increase its

The effects of scaling are beneficial to small creatures

A 1-centimeter cubed sugar cube scaled up by a factor of 10 has a total surface area of

Consider the fictional case of the incredible shrinking woman. If a fictional shrinking woman shrinks to 0.1 her original height, her total skin area shrinks to

In cold weather, your hands will be warmer if you wear

The strength of a beam is most related to its

If you hold two objects that have the same weight density, then they

Which ball is more elastic?

Tripling the linear size of an object multiplies its area by

Stone slabs are stronger under

When a load is placed on the middle of a horizontal beam supported at each end, the top part of the beam undergoes

Compared with a solid steel bar having a rectangular cross-section, an I-beam has the advantage of

Support a horizontal toothpick at both ends. Then do likewise for a log of the same kind of wood. There is more sag in the

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