Changes To Earth's Surface Vocabulary Test

A volcano is a mountain formed by the eruption of lava and ash from the Earth's crust. When magma, which is molten rock beneath the Earth's surface, rises to the surface and erupts, it creates a volcano. The lava and ash that are expelled during the eruption build up over time, forming a mountain-like structure. Therefore, a volcano is the correct answer as it best describes a mountain formed by lava and ash.

An earthquake refers to a shaking of the ground, which occurs due to the sudden release of energy in Earth's crust. This release of energy is often caused by the movement of tectonic plates, resulting in seismic waves that cause the ground to shake. Lava, volcano, and fault are not correct answers as they do not specifically describe the shaking of the ground caused by the release of energy in Earth's crust.

Fossils refer to remains or traces of past life that are found in sedimentary rock. These can include bones, sediments, or any other organic material that has been preserved over time. Fossils provide valuable evidence of the existence and characteristics of ancient organisms, helping scientists to understand the history and evolution of life on Earth.

The correct answer is "landforms" because physical features on the surface of the Earth, such as mountains, valleys, and plateaus, are collectively referred to as landforms. These landforms are created through various geological processes, including weathering, erosion, and deposition. Weathering breaks down rocks and minerals, erosion transports the weathered materials, and deposition occurs when these materials are deposited in a new location. Together, these processes shape the land and give rise to a diverse range of landforms.

The correct answer is "core." The core refers to the center layer of the Earth, which is composed of a solid inner core and a liquid outer core. It is the hottest and most dense part of the Earth, consisting mainly of iron and nickel. The core plays a crucial role in generating the Earth's magnetic field and is responsible for the movement of tectonic plates.

Continental drift refers to the theory that explains how Earth's continents move over its surface. This theory suggests that the continents were once joined together in a supercontinent called Pangaea and have since drifted apart to their current positions. It is supported by evidence such as matching coastlines, similar rock formations, and fossil records. Continental drift has had a significant impact on various aspects of Earth's history, including the formation of mountains, the distribution of plants and animals, and the evolution of climate patterns.

Pangea is the correct answer because it was a supercontinent that existed around 300 million years ago, where all the land on Earth was joined together. It was formed by the collision of several smaller continents and eventually broke apart to form the continents we know today. Gondwana, Lemura, and Laurasia are not correct answers as they either refer to different landmasses or are not associated with the concept of a supercontinent.

Deposition refers to the process of dropping or depositing sediments in a new location. This occurs when eroded materials such as rocks, soil, or sand are transported by wind, water, or ice and then settle down in a different area. Deposition is an important geological process that contributes to the formation of various landforms, such as deltas, beaches, and riverbanks. It is a key part of the overall cycle of weathering, erosion, and sediment transport in the Earth's surface.

The Earth's outer layer is called the crust. It is composed of solid rock and is the thinnest layer of the Earth. The crust is divided into several large and small plates that float on the semi-fluid mantle beneath them. These plates are constantly moving and interacting with each other, causing earthquakes, volcanic activity, and the formation of mountains. The crust is the layer that we live on and is where most of the Earth's geological activity occurs.

Weathering is the correct answer because it refers to the process of breaking down rocks into smaller particles, such as soil, sand, or sediments. This process can be caused by various factors like temperature changes, water, wind, or even biological activity. Weathering plays a crucial role in the formation of landforms by gradually wearing down rocks and shaping the Earth's surface over time.

Magma is the correct answer because it is the hot, partially molten rock that forms in the Earth's upper mantle. It is the precursor to lava, which is magma that reaches the Earth's surface through a volcano. The crust is the outermost layer of the Earth, and a volcano is a vent or opening in the Earth's surface through which magma, gases, and ash are ejected.

The mantle is the layer of rock beneath Earth's crust. It is located between the crust and the core. The mantle is composed of solid rock that is in a semi-solid state due to high temperatures and pressure. It plays a crucial role in the movement of tectonic plates and is responsible for the formation of volcanic activity and earthquakes.

Faults are places where pieces of the Earth's crust move. They are fractures in the Earth's crust where rocks on either side have moved relative to each other. Faults are responsible for causing earthquakes as the movement along the fault line releases accumulated energy, resulting in seismic activity. Volcanoes and lava, on the other hand, are not directly related to the movement of the Earth's crust but rather to the eruption of molten rock from beneath the surface.

The given answer, "plates," refers to rigid blocks of crust and upper mantle rock. These plates are found on the Earth's surface and are constantly moving and interacting with each other. This movement is responsible for various geological phenomena such as earthquakes, volcanic activity, and the formation of mountains. The plates are made up of both crust and upper mantle material, and they play a crucial role in shaping the Earth's surface and its geological processes.

Erosion refers to the process of moving sediment from one place to another. It is a natural process that occurs due to the action of wind, water, or ice. Through erosion, landforms are shaped and modified over time. It involves the wearing away and transportation of soil, rock, or other materials from one location to another. Erosion plays a significant role in shaping the Earth's surface and creating various landforms such as valleys, canyons, and deltas.

Mass movement refers to the downhill movement of rock and soil due to the force of gravity. It occurs when the force of gravity exceeds the strength of the materials holding the rock and soil in place. Mass movement can take various forms such as landslides, rockfalls, and slumps. It is an important process in shaping landforms and contributes to erosion and deposition.