CBSE Class 6 Science A Journey through States of Water (Class 6 NCERT New) Quiz 17

1. What is the difference between evaporation and boiling?

A Boiling happens only at the surface, while evaporation occurs throughout the liquid. B Evaporation occurs only at high temperatures, while boiling occurs at low temperatures. C Evaporation requires a specific temperature, while boiling can happen at any temperature. D Evaporation occurs at any temperature and only at the surface, while boiling occurs at a specific temperature throughout the liquid.

2. How does humidity affect the condensation process?

A Lower humidity increases the likelihood of condensation. B Higher humidity increases the likelihood and temperature at which condensation occurs. C Humidity has no effect on the condensation process. D Higher humidity decreases the temperature at which condensation occurs.

3. What happens to water when it freezes?

A Water contracts and becomes denser when it freezes. B Water expands and forms ice when it freezes. C Water evaporates completely when it freezes. D Water turns into steam when it freezes.

4. Can water exist in all three states at the same time?

A Yes, water can exist in all three states at the same time. B No, water cannot exist as a solid and liquid simultaneously. C Yes, but only under extreme pressure. D No, water can only exist in two states at a time.

5. What is the significance of the water cycle for the environment?

A The water cycle is significant for the environment as it supports ecosystems, regulates climate, and provides essential water resources. B The water cycle is primarily a geological process. C The water cycle has no impact on weather patterns. D The water cycle is only important for human consumption.

6. How does the water cycle contribute to weather patterns?

A The water cycle has no impact on weather patterns. B Weather patterns are solely determined by geographical location. C The water cycle only affects ocean currents, not weather. D The water cycle contributes to weather patterns by regulating humidity, temperature, and precipitation, which are essential for various weather phenomena.

7. What is the process called when water vapor cools and forms liquid water?

A Condensation B Precipitation C Evaporation D Transpiration

8. What is the term for the change of water from liquid to gas?

A Freezing B Evaporation C Condensation D Melting

9. What effect does increased temperature have on the rate of evaporation?

A Increased temperature only affects solid water. B Increased temperature increases the rate of evaporation. C Increased temperature decreases the rate of evaporation. D Increased temperature has no effect on evaporation.

10. What is the term for the process where water moves from the ground to the atmosphere?

A Transpiration B Evaporation C Condensation D Precipitation