1. Which answer best describes the difference between these 2 blocks?


 A) Block A has a larger volume than block B
 B) Block B is denser than block A
 C) Block A has more mass than block B
 D) Block A has more tightly packed particles than block B


2. What is the formula for density?
 A) Density = volume x mass
 B) Density = volume ÷ mass
 C) Density = mass ÷ volume
 D) Density = ½ x mass x (volume)


3. A block of steel has a volume of 50 cm^{3}, a length of 4cm and a width of 5cm. The height of the block is
 A) 2 cm
 B) 2.5 cm
 C) 5 cm
 D) 10 cm


What are the missing values in this table?

Substance 
Mass (g) 
Volume(cm^{3}) 
Density (g/cm^{3}) 
4. 
Wood 
20 
25 

5. 
Copper 

36 
9 
6. 
Glass 
400 

2.5 


7.. Which of these is the correct formula to calculate the pressure on an area?
 A) P = F x A
 B) P = F ÷ A
 C) P = F x d
 D) P = F ÷ d


8.. A block of mass 3000 g rests on a desk as shown.


What is the weight of the block?
 A) 0.3 kg
 B) 3 kg
 C) 3 N
 D) 30 N


9. What pressure does the block above cause on the desk?
 A) 1500 Pa^{}
 B) 150 Pa^{}
 C) 7500 Pa^{}
 D) 750 Pa^{}


1012:
What are the missing values in this table showing the pressure under different steel blocks in a scrap yard? 


Length (m) 
Width (m) 
Area (m^{2}) 
Force on ground (N) 
Pressure (Pa) 
10. 
0.8 
0.5 
0.4 
20 000 

11+12 . 

0.2 
2 

5000 

