WHICH CYCLE ARE THESE STEPS DESCRIBING? Earth’s water travels through a continuous cycle, moving between the geosphere, hydrosphere, atmosphere, and biosphere as the result of phase change and chemical reactions.

When liquid water in the hydrosphere is heated or gains radiant energy from the Sun, evaporation occurs.

The molecules begin to move quickly and change phase to form water vapor, the gas form of water.

When water vapor rises into the atmosphere, cools, and loses energy, condensation occurs.

The molecules slow as the gas changes phases once again to form a liquid. The resulting water droplets cling together to form clouds.

Precipitation occurs once the collected droplets become heavy and are pulled to Earth by gravity.

The cycle then leaves the atmosphere with the water either entering the geosphere or returning to the hydrosphere.

Water that soaks into the soil is collected by the roots of plants and is carried to the leaves.

Plants combine radiant energy from the Sun, carbon dioxide from the atmosphere, and water to perform the chemical reaction of photosynthesis.

When the product of the chemical reaction, glucose, is used by the plant for energy, a second chemical reaction, chemical respiration, occurs. As a result of this reaction, transpiration occurs as water is released from the plant back into the atmosphere.

98 points you will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. before you conduct your experiment, you need to form a hypothesis. a hypothesis is a prediction of what you think will happen in the experiment. the hypothesis is a statement that describes “if” a certain set of circumstances are present “then” there will be a specific result that will occur. record your hypothesis here: record the results from step one of the experiment (dropping the objects in the air): first trial: second trial: third trial: record the results from step two of the experiment (dropping the objects in a vacuum): first trial: second trial: third trial: did the experiment support your hypothesis? using the data from your experiment, describe why you believe your hypothesis was either proven or disproven. what forces were acting on the objects dropped in the air? what force was acting on the objects dropped in the vacuum? part two: comparing forces choose two forces and compare and contrast these forces. you must provide two ways that they are alike and two ways that they are different. you may make a list, write in paragraph form, or make a chart. choose two forces and compare and contrast these forces. these must be different forces than used in the prior question. provide two ways that they are similar and two ways that they are different. you may make a list, write it out, or make a chart.