1.
Where does the energy that powers the water cycle come from?
Correct Answer
C. Sun
Explanation
The sun is the ultimate source of energy for the water cycle. The sun's heat causes water on the Earth's surface to evaporate, forming water vapor. This water vapor then rises into the atmosphere where it cools and condenses, forming clouds. Eventually, the water droplets in the clouds combine and fall back to the Earth as precipitation, such as rain or snow. This constant cycle of evaporation, condensation, and precipitation is driven by the sun's energy, making it the primary source of power for the water cycle.
2.
What is the process of evaporation?
Correct Answer
B. Water gets warm and changes from liquid water to water vapor.
Explanation
The process of evaporation involves water getting warm and changing from liquid water to water vapor. This occurs when the water molecules gain enough energy from heat to break their bonds and escape into the air as vapor. Evaporation is a natural process that takes place in various environments, such as when water bodies are exposed to sunlight or when wet surfaces dry up. It is an important part of the water cycle and contributes to the formation of clouds and precipitation.
3.
What is the correct term for moisture that falls to the ground from clouds?
Correct Answer
B. Precipitation
Explanation
Precipitation is the correct term for moisture that falls to the ground from clouds. It includes various forms such as rain, snow, sleet, or hail. This occurs when the water vapor in the air condenses into liquid or solid form and becomes too heavy to remain suspended in the atmosphere, leading to its release as precipitation. Condensation, on the other hand, refers to the process of water vapor changing into liquid water, while evaporation is the process of liquid water turning into water vapor.
4.
From which of these water bodies does water evaporates the most?
Correct Answer
B. Rivers
Explanation
Rivers evaporate the most water compared to puddles and well water. This is because rivers have a larger surface area and continuous flow, allowing for more water to be exposed to the air and evaporate. Puddles, on the other hand, are small and shallow, limiting the amount of water available for evaporation. Well water is typically located underground and is not directly exposed to the air, resulting in lower rates of evaporation.
5.
What is the correct term for rising water vapor meeting colder air and turning back into water droplets?
Correct Answer
A. Condensation
Explanation
Condensation is the correct term for rising water vapor meeting colder air and turning back into water droplets. When warm air containing water vapor comes into contact with colder air, the water vapor cools down and condenses into tiny water droplets or ice crystals. This process is responsible for the formation of clouds, fog, and dew. Dehydration refers to the loss of water from an object or organism, while precipitation refers to any form of water that falls from the atmosphere to the Earth's surface, including rain, snow, sleet, or hail.
6.
What are the three stages of the water cycle?
Correct Answer
A. Evaporation, condensation, precipitation
Explanation
The water cycle consists of three stages: evaporation, condensation, and precipitation. Evaporation occurs when water changes from a liquid to a gas, usually due to heat from the sun. The water vapor then rises into the atmosphere. Condensation happens when the water vapor cools and changes back into liquid form, forming clouds. Finally, precipitation occurs when the condensed water droplets in the clouds become too heavy and fall back to the Earth's surface as rain, snow, sleet, or hail.
7.
A substance that is very important to us. We need it to live, and it covers over two thirds of the surface of the Earth.
Correct Answer
A. Water
Explanation
Water is a substance that is essential for our survival as it is required for various bodily functions. It covers over two thirds of the Earth's surface in the form of oceans, seas, and lakes. Without water, life as we know it would not be possible. It plays a crucial role in regulating temperature, transporting nutrients, and supporting ecosystems. Additionally, water is involved in many industrial processes, agriculture, and energy production. Its abundance and significance make it a substance of utmost importance to us.
8.
Where is water vapor found?
Correct Answer
D. All of the above
Explanation
Water vapor is found in all of the mentioned options. When we exhale, our breath contains water vapor. The air around us also contains water vapor, as it is constantly evaporating from various sources such as bodies of water. Additionally, steam from a kettle is formed by the boiling of water, which releases water vapor into the air. Therefore, all of these options contain water vapor.
9.
What is the correct term for plants releasing water from their leaves, which then evaporates?
Correct Answer
C. Transpiration
Explanation
Transpiration is the correct term for plants releasing water from their leaves, which then evaporates. During transpiration, water is drawn up from the roots to the leaves through the xylem vessels. Once in the leaves, the water evaporates through small openings called stomata. This process helps to transport nutrients and water throughout the plant and also cools the plant down.
10.
The process in which water circulates from the oceans to the clouds to the land to the rivers, and then accumulates back into the oceans.
Correct Answer
B. The water cycle
Explanation
The given process describes the movement of water from the oceans to the clouds through evaporation, then to the land through precipitation, and finally back to the oceans through rivers. This continuous cycle is known as the water cycle.