1. Which answer best describes the difference between these 2 blocks?
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- 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
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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)
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3. A block of steel has a volume of 50 cm3, 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
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4-6: What are the missing values in this table?
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Substance |
Mass (g) |
Volume (cm3) |
Density (g/cm3) |
| 4. |
Wood |
20 |
25 |
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| 5. |
Copper |
|
36 |
9 |
| 6. |
Glass |
400 |
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2.5 |
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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
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8+9: A block of mass 3000 g rests on a desk as shown.
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8. What is the weight of the block?
- A) 0.3 kg
- B) 3 kg
- C) 3 N
- D) 30 N
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9. What pressure does the block cause on the desk?
- A) 1500 Pa
- B) 150 Pa
- C) 7500 Pa
- D) 750 Pa
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10-12:
What are the missing values in this table showing the pressure under different steel blocks in a scrap yard? |
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| Length (m) |
Width (m) |
Area (m2) |
Force on ground (N) |
Pressure (Pa) |
0.8 |
0.5 |
0.4 |
20 000 |
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0.2 |
2 |
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5000 |
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