Questions 2 and 3 refer to the following information.
The powerful Gulf Stream and other currents encircle much of the North Atlantic Ocean. Within this area, away from prevailing winds, lies the nearly motionless Sargasso Sea. Large masses of sargassum seaweed accumulate on the surface and float on remarkably clear blue water. Because there is almost no current here, no water enters the area. The whole area remains warm under the sun’s light. No upwelling currents occur in the motionless mass of water, so no nutrients are brought up from the depths below. Other than the floating seaweed and the eels that spend part of their life cycle there, the Sargasso is a "dead sea."
Questions 4 and 5 refer to the following information.
The water cycle is a process that describes how water moves from Earth to the atmosphere and back again. The Sun provides energy for the water cycle. In evaporation, heat from the Sun changes water to a gas, water vapor. Water evaporates from oceans, lakes, rivers, and streams. As it evaporates, it moves upward into Earth’s atmosphere.
As the water vapor rises in the atmosphere, it is cooled. As the water vapor cools, it condenses, or changes back to liquid form. Droplets of condensed water vapor form clouds.
When the clouds can hold no more condensed water vapor, the droplets fall to Earth as precipitation such as rain. The rain soaks into the ground, moves along the ground in streams and rivers, or evaporates. Once the water evaporates, the water cycle repeats.
Questions 6 and 7 refer to the following diagram and information.
When damp air blows against a mountain, the air rises. As it moves higher, it gets colder. For every 1,000 feet the air rises, its temperature drops 3 degrees. Clouds also form because moisture condenses as air becomes colder. When the air has reached the top of the mountain, it is quite dry. As the dry, cold air moves down the other side of the mountain, it heats up about 5 1/2 degrees for every 1,000 feet of descent. It heats up more because the moisture is gone.
Questions 8 and 9 refer to the following information.
Many physical and chemical processes change Earth’s surface. These processes involve the action of wind, water, ice, heat, and gravity. Five of these processes are defined below.abrasion—wearing away of rock by the grinding of ice, soil, or other materials against it
creep—very slow movement of soil downhill
deposition—accumulation of substances that are no longer dissolved in water
exfoliation—peeling or flaking of thin layers from the surface of rock
leaching—the removal of minerals from the soil as water moves through it