International Grade 7 Science Second Tryout Question Grid 2024 (November)

1. Students are able to identify scenarios that represent a chemical change by analyzing the characteristics of chemical and physical changes.
2. Students can explain why boiling water is classified as a physical change by understanding the difference between physical and chemical changes.
3. Students are able to identify the temperature scale primarily used by scientists and recognize its key reference points.
4. Students can evaluate the suitability of different thermometers based on their temperature ranges and the context of their use.
5. Students are able to identify practical applications of the expansion and contraction of matter in everyday life.
6. Students can calculate the specific latent heat of fusion using the formula L= Q/m given the heat energy and mass of the substance.
7. Students are able to analyze and identify the specific latent heat (fusion or vaporization) involved in changes of state based on given scenarios or diagrams.
8. Students can identify and differentiate between methods of heat transfer (conduction, convection, and radiation) based on a given diagram.
9. Students can explain the method of heat transfer responsible for warming a metal rod when one end is heated, demonstrating understanding of conduction.
10. Students can identify suitable conductors for completing an electric circuit, based on the properties of materials.
11. Students can explain why metals are better conductors of heat compared to materials like wood, rubber, and glass by understanding the properties of thermal conductivity.
12. Students can identify which surface properties (color and texture) are best for absorbing and emitting heat based on the concepts of thermal radiation.
13. Students are able to compare and explain how surface characteristics (shiny vs. matte black) affect heat absorption and reflection.
14. Students can describe the process of sweating and explain how it helps in regulating body temperature through the principles of evaporation and heat transfer.
15. Students are able to analyze the role of the hypothalamus in thermoregulation and correctly identify mechanisms the body uses to lower temperature when it is too high.
16. Students can convert temperatures between different scales (Celsius to Réamur) using the appropriate formula.
17. Students can calculate the mass of water produced during condensation by using the specific latent heat of vaporization formula Q=mL
18. Students are able to classify animals into homeothermic and poikilothermic categories based on their ability to regulate body temperature.
19. Students can explain the purpose of expansion joints in bridges by understanding the effects of thermal expansion and contraction on materials.
20. Students can suggest methods to accelerate the drying process of wet objects, such as shoes, using principles of evaporation, heat transfer, and air circulation.