Last updated on September 2nd, 2024 at 10:52 pm
Which state of water has a fixed shape?
- Solid
- Liquid
- Gas
- None of the above
Answer: a) Solid
What happens to water molecules during evaporation?
- They slow down
- They speed up
- They become heavier
- They change color
Answer: b) They speed up
What is the main source of energy for the water cycle?
- Wind
- Gravity
- The Sun
- Earth’s core
Answer: c) The Sun
What causes dew to form on grass in the morning?
- Rain
- Condensation
- Evaporation
- Transpiration
Answer: b) Condensation
What happens to the temperature of remaining water as some of it evaporates?
- It increases
- It decreases
- It stays the same
- It fluctuates randomly
Answer: b) It decreases
Which of these would evaporate fastest?
- Alcohol
- Water
- Oil
- Honey
Answer: a) Alcohol
What is the primary reason for using an earthen pot to store water?
- It’s cheap
- It’s traditional
- It keeps water cool through evaporation
- It improves water taste
Answer: c) It keeps water cool through evaporation
In which of these locations would evaporation likely be slowest?
- Desert
- Tropical rainforest
- Mountain top
- Arctic tundra
Answer: b) Tropical rainforest
What is the main difference between evaporation and boiling?
- Evaporation only occurs at the surface, boiling throughout the liquid
- Evaporation requires more energy than boiling
- Boiling only occurs at the surface, evaporation throughout the liquid
- There is no difference
Answer: a) Evaporation only occurs at the surface, boiling throughout the liquid
What causes fog to form?
- Rapid evaporation
- Rapid condensation near the ground
- Heavy rainfall
- Strong winds
Answer: b) Rapid condensation near the ground
What happens to the humidity of air as temperature increases?
- It increases
- It decreases
- It remains constant
- It becomes zero
Answer: b) It decreases
Which of these would evaporate faster?
- Salt water
- Pure water
- Sugar water
- All would evaporate at the same rate
Answer: b) Pure water
Which of these is NOT a way to increase the rate of evaporation?
- Using a fan
- Spreading the liquid out
- Increasing temperature
- Increasing pressure
Answer: d) Increasing pressure
What is the main reason for sprinkling water on the floor during summer?
- To clean the floor
- To increase humidity
- To cool the surroundings through evaporation
- To prevent dust from rising
Answer: c) To cool the surroundings through evaporation
What happens to the kinetic energy of water molecules during condensation?
- It increases
- It decreases
- It remains the same
- It becomes zero
Answer: b) It decreases
