IGCSE (General Physics) All Answers Correct
1. Avoiding parallax error
- To avoid parallax error, view the ruler perpendicularly.
2. Meniscus used in measuring volume
- When measuring volume, use the bottom meniscus, except for Mercury, where the upper meniscus
is used.
3. Measuring short intervals of time
- Measure time by timing a specific number of cycles and then dividing the total time by the number of
cycles.
4. Mass
- Mass is the amount of matter in an object or the property of an object that resists changes in motion.
,5. Density
- Density is the ratio of mass to volume for a substance.
6. Formula for density
- Density is calculated as mass divided by volume: Density = mass / volume.
7. Density of water
- The density of water is 1000 kg/m³ or 1 g/cm³.
8. Least dense state of matter
- Gas is the least dense state of matter.
9. Why do icebergs float in water?
, - Icebergs float in water because ice is less dense than water.
10. Which is denser, gold or silver?
- Gold is denser than silver.
11. Finding the volume of an irregularly shaped object
- Use the displacement method to find the volume of an irregularly shaped object.
12. Formula for speed
- Speed is calculated using the formula: Speed = distance / time.
This reorganization presents each topic clearly while avoiding redundancy and maintaining clarity in
each answer.
Formula for average speed ✔️Average speed = total distance / total time taken
1. Avoiding parallax error
- To avoid parallax error, view the ruler perpendicularly.
2. Meniscus used in measuring volume
- When measuring volume, use the bottom meniscus, except for Mercury, where the upper meniscus
is used.
3. Measuring short intervals of time
- Measure time by timing a specific number of cycles and then dividing the total time by the number of
cycles.
4. Mass
- Mass is the amount of matter in an object or the property of an object that resists changes in motion.
,5. Density
- Density is the ratio of mass to volume for a substance.
6. Formula for density
- Density is calculated as mass divided by volume: Density = mass / volume.
7. Density of water
- The density of water is 1000 kg/m³ or 1 g/cm³.
8. Least dense state of matter
- Gas is the least dense state of matter.
9. Why do icebergs float in water?
, - Icebergs float in water because ice is less dense than water.
10. Which is denser, gold or silver?
- Gold is denser than silver.
11. Finding the volume of an irregularly shaped object
- Use the displacement method to find the volume of an irregularly shaped object.
12. Formula for speed
- Speed is calculated using the formula: Speed = distance / time.
This reorganization presents each topic clearly while avoiding redundancy and maintaining clarity in
each answer.
Formula for average speed ✔️Average speed = total distance / total time taken
