Earth's Changing Surface Review answers
1. Earth’s crust is composed of rock plates that float on top of the mantle.
2. the mid-Atlantic Ridge splitting Iceland
3. Volcanoes are found on its rim.
4. They release materials that form fertile soils.
5. disturbance on the ocean floor.
6. the breakdown of rock and sediments into smaller pieces.
7. It forms from the remains of plants and animals.
8. They both help reduce erosion from water runoff.
9. It is a chemical weathering process in which oxygen combines with substances in rock.
10. frost wedging.
11. in folded mountains.
12. It is a rock with pores.
all correct
this is for a test at school. they're all right btw
1. True
2. True
3. True
4. True
5. False
6. True
7. True
8. True
9. True
10. True
11. True
12. True
That's great to hear! Congratulations on answering all the questions correctly. Good luck on your test!
Yes, all answers are correct. Well done!
To review the answers to the questions:
1. Earth's crust is composed of rock plates that float on top of the mantle.
- This is a true statement and a basic understanding of plate tectonics. Earth's crust is divided into several large and small tectonic plates that are constantly moving.
2. The mid-Atlantic Ridge splitting Iceland.
- This is a true statement. The mid-Atlantic Ridge is a divergent boundary where two tectonic plates are moving apart, creating a rift that runs through the center of the Atlantic Ocean. It splits Iceland as the country sits on this ridge.
3. Volcanoes are found on its rim.
- The statement is incomplete, but assuming it refers to volcanoes found on the rim of the Pacific Ocean, also known as the "Ring of Fire," then it is true. The Ring of Fire is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur due to plate tectonics.
4. They release materials that form fertile soils.
- This statement is true. Volcanic eruptions release materials like lava, ash, and other volcanic debris, which are rich in minerals and nutrients. Over time, these materials weather and break down, creating fertile soil that is excellent for plant growth.
5. Disturbance on the ocean floor.
- The statement is incomplete and vague. There are various disturbances and processes that can occur on the ocean floor, such as underwater earthquakes, the formation of underwater mountains or seamounts, the creation of trenches, or the movement of tectonic plates. Without further context, it's challenging to determine the specific answer.
6. The breakdown of rock and sediments into smaller pieces.
- This process is known as weathering, specifically physical weathering. It involves the physical breakdown of rocks and sediments into smaller pieces without changing their chemical composition. This can occur due to forces like temperature changes, freeze-thaw cycles, pressure, and wind erosion.
7. It forms from the remains of plants and animals.
- This statement refers to the formation of organic matter or organic sedimentary rock such as coal, which is derived from the accumulated remains of plants and animals. Through compaction and chemical changes over long periods of time, organic matter can turn into coal.
8. They both help reduce erosion from water runoff.
- This statement is true. Both vegetation (plants) and contour plowing (a method used in agriculture) help to reduce erosion caused by water runoff. Vegetation, such as trees or grass, can absorb water and slow down its movement, preventing excessive runoff and erosion. Contour plowing involves plowing along the contours of a slope to create ridges that act as barriers, reducing water flow and erosion.
9. It is a chemical weathering process in which oxygen combines with substances in rock.
- This statement refers to the process of oxidation, which is a type of chemical weathering. Oxidation occurs when oxygen combines with certain substances in rocks, resulting in a chemical reaction that can cause the rocks to break down and weaken over time.
10. Frost wedging.
- Frost wedging is a physical weathering process that occurs in colder climates. It happens when water seeps into cracks or pores in rocks, and when that water freezes, it expands, resulting in the widening and deepening of the cracks. Over time, this repeated freezing and thawing can lead to the disintegration of rocks.
11. In folded mountains.
- This statement is referring to the location of folded mountains, which are formed by compression between two tectonic plates pushing against each other, causing layers of rock to buckle and fold. Examples of folded mountains include the Himalayas, the Alps, and the Appalachians.
12. It is a rock with pores.
- This statement refers to the definition of a porous rock. A porous rock is a rock that contains small or interconnected spaces or pores within its structure. These pores can allow the rock to absorb and hold fluids, such as water or oil.
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P.S. this also works for tcah