Water — A Precious Resource
Science · Grade 7 · Week 16 · 25 questions
Mixtures and solutions are everywhere — from the air you breathe to the drinks you enjoy. Understanding how substances combine and how to separate them is fundamental to chemistry.
What you'll practise
- Distinguish between mixtures and pure substances
- Identify methods for separating mixtures
- Understand dissolving and solubility
- Apply separation techniques in practical contexts
All 25 questions in this Water — A Precious Resource quiz
Grade 7 Science — Water — A Precious Resource: 25 practice questions with instant scoring and explanations.
- The process by which water changes from liquid to vapor is called:
- The water cycle involves all of the following except:
- Groundwater is mainly replenished through:
- The level below which the ground is saturated with water is called:
- Depletion of groundwater can be caused by:
- Rainwater harvesting is a technique to:
- Which of the following is a method of rainwater harvesting?
- The main source of fresh water for most communities is:
- Water conservation can be practiced by:
- The percentage of water on Earth is approximately:
- Of the total water on Earth, the percentage of fresh water is approximately:
- An aquifer is a layer of:
- When water evaporates, it becomes:
- Condensation is the reverse process of:
- Precipitation includes:
- The water table is usually highest during:
- Excessive extraction of groundwater can lead to:
- Which activity does NOT contribute to water pollution?
- A watershed is an area of land where all water drains to:
- Transpiration is the process of water loss from:
- The combination of evaporation and transpiration is called:
- Which of the following is a renewable source of water?
- A wetland is important because it:
- Saltwater intrusion in coastal areas occurs when:
- To maintain sustainable water use, we should:
Question 1 of 250 correct so far