1.
When it is raining outside, at which stage of the water cycle is the water falling down?
Correct Answer
B. Precipitation
Explanation
When it is raining outside, the water that is falling down is in the stage of the water cycle known as precipitation. Precipitation occurs when water vapor in the atmosphere condenses into water droplets or ice crystals and falls to the ground as rain, snow, sleet, or hail. This is an important part of the water cycle as it replenishes the Earth's water supply and helps maintain the balance of water on our planet.
2.
When water is heated, it changes from a liquid into a gas called _________.
Correct Answer
D. Water Vapor
Explanation
When water is heated, it gains energy and the molecules start moving faster. Eventually, the energy is enough to break the bonds between the water molecules and the water changes from a liquid to a gas. This gaseous form of water is called water vapor.
3.
What is another name for rainfall?
Correct Answer
A. Precipitation
Explanation
Precipitation refers to the process of water falling from the atmosphere to the Earth's surface. It includes various forms such as rain, snow, sleet, or hail. The term "rainfall" specifically refers to the amount of rain that falls in a particular area during a specific period of time. Therefore, precipitation is another name for rainfall as it encompasses all forms of water falling from the atmosphere.
4.
Water that soaks into the soil is used by plants or stored as groundwater. What is this called?
Correct Answer
A. Infiltration
Explanation
Infiltration refers to the process of water soaking into the soil. This water can then be utilized by plants for their growth or stored as groundwater. It is an essential part of the water cycle and plays a crucial role in maintaining the water balance in ecosystems.
5.
Which is the beginning phase of the water cycle?
Correct Answer
D. It is a cycle and has no beginning or end.
Explanation
The water cycle is a continuous process with no specific beginning or end. It is a cycle that involves various stages, including evaporation, condensation, and precipitation. Each stage is interconnected and leads to the next, creating a continuous cycle of water movement on Earth. Therefore, the correct answer is that the water cycle has no beginning or end.
6.
As water goes around and around the water cycle, the amount of water on earth ______.
Correct Answer
C. Stays the same
Explanation
The water cycle is a continuous process where water evaporates from the surface, forms clouds, falls back to the earth as precipitation, and eventually returns to bodies of water. While the amount of water in different forms may vary at any given time, the total amount of water on earth remains constant. This is because water is neither created nor destroyed; it simply changes form and moves through the water cycle. Therefore, the correct answer is that the amount of water on earth stays the same.
7.
Most of the water that evaporates on earth comes from ______.
Correct Answer
B. Oceans
Explanation
Most of the water that evaporates on earth comes from oceans. This is because oceans cover about 71% of the Earth's surface and contain a vast amount of water. The sun's heat causes the water in the oceans to evaporate, turning it into water vapor that rises into the atmosphere. This water vapor eventually condenses to form clouds and falls back to the Earth as precipitation, replenishing the water cycle. Therefore, the oceans play a crucial role in the water cycle and are the primary source of water for evaporation.
8.
As water vapor rises and cools, it changes into droplets which form clouds, fog, or mist. What is this called?
Correct Answer
D. Condensation
Explanation
When water vapor rises and cools, it undergoes a process called condensation. This occurs when the water vapor molecules lose heat energy and come together to form liquid water droplets. These droplets then gather and form clouds, fog, or mist. Evaporation refers to the process of water turning into vapor, precipitation refers to the falling of water in any form (rain, snow, sleet), and infiltration refers to the process of water seeping into the ground.
9.
Water that comes from plants and is then released into the air as water vapor is called ______.
Correct Answer
B. Transpiration
Explanation
Transpiration is the process by which water is absorbed by plants through their roots and then released into the air as water vapor through small openings in their leaves called stomata. This process helps plants to regulate their temperature, transport nutrients, and maintain their shape. Therefore, the correct answer for the given question is Transpiration.
10.
As water moves through the water cycle. it changes______.
Correct Answer
C. Taste, shape, and form
Explanation
Water changes its taste, shape, and form as it goes through the water cycle. The water cycle involves processes such as evaporation, condensation, and precipitation, which cause water to transform from liquid to vapor, change shape from droplets to clouds, and form into rain, snow, or hail. These changes in taste, shape, and form are essential for the water cycle to continue and for water to be distributed across the Earth.