Write a paragraph that describes the path that one drop of water takes as it moves through the water cycle. In your paragraph, include at least two changes in the form of water.
A drop of water in the ocean is warmed by the sun and evaporates, changing from liquid water into water vapor. The vapor rises, cools, and condenses into liquid droplets that form a cloud. The drop then falls to Earth as precipitation and flows over land as runoff, eventually returning to a river or ocean.
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Write a paragraph explaining how adhesion, cohesion, and capillary action all enable water to go from the roots to the top of a tall tree.
To transport water from the roots to the leaves of a tall tree, plants rely on the unique properties of water caused by its polar nature and hydrogen bonds. Cohesion is the attraction that makes water molecules stick to one another, creating a continuous water column. Adhesion is the attraction between water molecules and the walls of the tree's xylem vessels, which helps the water move against gravity. These two forces work together to produce capillary action, allowing water to climb upward. As water evaporates from the leaves, it pulls the entire column of water up from the roots.
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Write a paragraph explaining how adhesion, cohesion, and capillary action all enable water to go from the roots to the top of a tall tree.
Water molecules have polar bonds and form hydrogen bonds with one another, creating cohesion. Adhesion is the attraction that makes water stick to the walls of the tree’s xylem. Together, cohesion and adhesion produce capillary action, helping water move from the roots to the leaves against gravity.
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