Science Spelling List

Primary 5 Spelling List

Week 1-4 Chapter 1 

Spelling and Definition for Water Cycle

1. Boiling is the process when a substance gains heat and changes from the liquid state to the gaseous state at a fixed temperature. 

2. Condensation is the process when a gas comes into contact with a cooler surface, loses heat and changes from the gaseous state to the liquid state. 

3. Evaporation is the process when a liquid at the surface changes from the liquid state to the gaseous state at a temperature between the melting point and boiling point. 

4. Freezing is the process when a substance loses heat and changes from the liquid state to the solid state at a fixed temperature. 

5. Melting is the process when a substance gains heat and changes from the solid state to the liquid state at a fixed temperature. 

6. Water vapour is water in its gaseous state.

7. Steam is water in its gaseous state with the temperature at boiling point.

8. Water cycle is the movement of water from the Earth to the sky and back to the Earth in a continuous way. 

9. The freezing point is the fixed temperature at which a substance changes from liquid state to solid state.

10. The boiling point is the fixed temperature at which a substance changes from liquid state to gaseous state.

Term 2

Spelling and Definition for Plant Reproduction

1. Pollination is the transfer of pollen grains from the anther to the stigma of a flower.

2. Fertilisation is the fusion of a male reproductive cell and a female reproductive cell to form a fertilized egg.

3. Dispersal is the scattering of fruits and seeds. 

4. Germination is the process when seeds develop into young plants under suitable conditions.

5. Stigma

6. Style

7. Ovary

8. Ovules

9. Pollen tube

10.  Female and male reproductive cells

11. Womb

12. Testes

13. Sperm