1.
What best describes why water is unique
Correct Answer
C. It has no taste, shape, colour or smell
Explanation
Water is unique because it lacks taste, shape, color, or smell. Unlike other substances, water is odorless, colorless, and tasteless. This unique property allows water to be a universal solvent and to easily mix with other substances. It also enables water to exist in three states - solid, liquid, and gas - making it essential for various natural processes and life on Earth.
2.
What are the two types of water found on Earth ?
Correct Answer
B. Fresh and salt
Explanation
Fresh and salt water are the two types of water found on Earth. Freshwater is found in lakes, rivers, and underground sources, and it has a low concentration of salt. It is suitable for drinking and supports various ecosystems. Saltwater, on the other hand, is found in oceans and seas and has a high concentration of salt. It is not suitable for drinking and supports a different set of marine organisms adapted to the saline environment.
3.
Water is a natural resource
Correct Answer
A. True
Explanation
Water is considered a natural resource because it is found in nature and is not created by human beings. It is essential for all forms of life and plays a crucial role in various natural processes such as the water cycle. Additionally, water is used for various purposes such as drinking, irrigation, and industrial activities. Therefore, it meets the criteria of being a natural resource.
4.
Why do animals need water ?
Correct Answer
C. To stay hydrated
Explanation
Animals need water to stay hydrated. Hydration is essential for their overall well-being and survival. Water helps regulate body temperature, aids in digestion, transports nutrients, and removes waste from the body. It also lubricates joints, supports organ function, and helps maintain healthy skin and coat. Without enough water, animals can become dehydrated, which can lead to various health issues and even death. Therefore, staying hydrated is crucial for animals to maintain their bodily functions and ensure their overall health and vitality.
5.
Why do plants need water ?
Correct Answer
A. To make food
Explanation
Plants need water to make food through a process called photosynthesis. During photosynthesis, plants use water, along with sunlight and carbon dioxide, to produce glucose, which is their source of energy. Water is essential for the plants to carry out this process and convert sunlight into chemical energy. Additionally, water helps in the transportation of nutrients and minerals from the soil to different parts of the plant. It also aids in maintaining the turgidity of plant cells, which is important for their structure and growth.
6.
The human body is made up of 70% of water ?
Correct Answer
A. True
Explanation
The human body is made up of approximately 70% water. Water is essential for various bodily functions such as digestion, circulation, temperature regulation, and waste removal. It is present in cells, tissues, and organs, playing a crucial role in maintaining overall health and well-being. Adequate hydration is necessary to support these functions and to prevent dehydration, which can lead to various health issues.
7.
When I clean out my fish tank I can conserve ( Save ) water by ...
Correct Answer
B. Watering my plants.
Explanation
Watering plants is a practical way to conserve water when cleaning out a fish tank. Instead of pouring the water down the drain, which would be wasteful, using it to hydrate plants provides a useful purpose for the water. This helps to minimize water waste and promotes sustainability. Drinking the water would not be recommended as it may contain harmful substances for human consumption.
8.
Which are the ways we can conserve (save ) water
Correct Answer
C. All the above
Explanation
The correct answer is "All the above" because both having shorter showers and turning off dripping taps are effective ways to conserve water. Taking shorter showers reduces the amount of water used, while turning off dripping taps prevents water wastage. By implementing both of these practices, we can contribute to water conservation efforts.
9.
True or false : The oceans holds the majority of Earth's water.
Correct Answer
A. True
Explanation
The statement is true because the oceans cover about 71% of the Earth's surface and contain about 97% of the Earth's water. The vast volume of water in the oceans makes them the largest reservoir of water on our planet.
10.
What is Water Cycle
Correct Answer
A. Evaporation, condensation, precipitation
Explanation
The correct answer is evaporation, condensation, precipitation. This is the correct sequence of events in the water cycle. Evaporation occurs when water changes from liquid to vapor and rises into the atmosphere. Condensation happens when the water vapor cools and forms clouds. Finally, precipitation occurs when the water droplets in the clouds become heavy and fall to the ground as rain, snow, sleet, or hail. This process is essential for the continuous circulation of water on Earth.