physics chap 7,8

Which of the following solids has a regular arrangement of atoms?

• Amorphous solids
• Crystalline solids
• Polycrystalline solids
• Gases

Which of the following materials is a polycrystalline solid?

• glass
• diamond
• steel
• water

Which solid has no long-range order but may exhibit short-range order?

• Amorphous solids
• Crystalline solids
• Polycrystalline solids
• Gases

In a cubic unit cell, atoms are located at:

• Only at the corners
• Corners and center of each face
• Corners and center of the unit cell
• Only at the center

What is the coordination number of a simple cubic unit cell?

• 2
• 4
• 6
• 8

When a material reaches its yield point, it enters the:

• Plastic region
• Elastic region
• Fracture region
• Stress-relaxation region

Which modulus is used to describe the change in shape of a material when subjected to a shear force?

• Young’s modulus
• Shear modulus
• Bulk modulus
• Modulus of resilience

In thermal equilibrium, there is no:

• Heat transfer between the objects
• Temperature difference
• Energy exchange
• All of these

In thermal equilibrium, the rate of heat transfer between two objects is:

• Equal in both directions
• Zero
• High in one direction and low in the other
• Constant but in different directions

Which of the following factors does NOT affect the internal energy of a system?

• Temperature
• Pressure
• Volume
• The external environment