Questions for Practice
1. Daniel's school has a garden, and the students are responsible for watering the plants. What is the most efficient way for the students to water the garden while conserving water?
a) Water the garden during the hottest part of the day.
b) Use a tube with a high-pressure nozzle for faster watering.
c) Water the plants at the base, avoiding wetting the leaves.
d) Flood the garden with water to ensure thorough watering.
View answer
Answer: c) Water the plants at the base, avoiding wetting the leaves.
Explanation: Water the plants at the base, avoiding wetting the leaves. This method minimizes water waste by directing water to the plant roots where it is needed most, promoting efficient water use in the garden.
2. Emily noticed that her home's sink was constantly running, wasting a significant amount of water. What is an effective and practical solution to address this issue?
a) Ignore the leak as it doesn't matter much.
b) Fix the leak immediately to prevent water wastage.
c) Increase the tap's speed to run out of water quickly.
d) Use a bucket of water to manually throw all the water.
View answer
Answerb) Fix the leak immediately to prevent water wastage.
Explanation: Fixing the leak immediately to prevent loss of water as soon as possible.
3. What do we call when the tiny droplets come together in clouds and fall to the ground as rain and snow?
a) Evaporation
c) Condensation
c) Precipitation
d) Runoff
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Answer: c) Precipitation
Explanation: Precipitation is the term for water drops in clouds that combine and fall on the ground as rain or snow.
4. Emily's family planning to wash their car on the weekend. What is the most water-efficient way for them to wash the car?
a) Using a piping without a nozzle.
b) Using a bucket and a sponge.
c) Washing the car every day.
d) Never wash the car.
View answer
Answer: b) Using a bucket and a sponge.
Explanation: Using a bucket and sponge allows the car to be washed efficiently with a controlled amount of water.
5. Sarah noticed that her family uses a lot of water every day. She wants to help them save water. What can Sarah do to save water while brushing her teeth?
a) Leave the tap running
b) Turn off the tap when not using water
c) Use hot water for brushing
d) Stop brushing her teeth
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Answer: b) Turn off the tap when not using water
Explanation: By turning off the tap when not actively using water, Sarah can save water.
6. Alex's family wants to set up a rainwater harvesting system. What is the purpose of installing a rain barrel in their garden?
a) To stop rain
b) To throw rainwater away
c) To collect and store rainwater for later use
d) To use it to dump trash
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Answer: c) o collect and store rainwater for later use
Explanation: A rain barrel is installed to collect and store rainwater for later use.
7. What is the process where water from oceans, lakes and rivers turns into vapour and rises into the sky?
a) Evaporation
b) Condensation
c) Precipitation
d) Water conservation
View answer
Answer: a) Evaporation
Explanation: Evaporation is when water is heated by the sun and turns into vapour, rising into the sky to form clouds.
8. Emily wants to use rainwater to water her garden. What should she do before using collected rainwater for this purpose?
a) Pour the rainwater directly into the plants.
b) Filter the rainwater to remove dirt and debris.
c) Boil the rainwater.
d) Mix rainwater with tap water.
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Answer: b) Filter the rainwater to remove dirt and debris.
Explanation: Filtering will remove the impurities thus ensuring that the water we are using is clean.
9. After water falls as precipitation and collects in rivers, what is the process where it flows downstream and finally joins another water source?
a) Filtration
b) Evaporation
c) Conservation
d) Runoff
View answer
Answer: d) Runoff
Explanation: Runoff is the movement of water from precipitation, flowing downstream, joining other streams and eventually forming rivers.
10. Sophie is curious about how the water from the ocean reaches the land. What happens to the ocean water when it's sunny?
a) It disappears
b) It gets salty
c) It goes up and becomes clouds
d) Turns into ice
View answer
Answer: c) It goes up and becomes clouds
Explanation: When it's sunny, the ocean water goes up into the sky and becomes clouds.
