A. A large, flat piece of rock that moves independently on the Earth's surface B. A small fragment of the Earth's mantle C. A layer of soil on the Earth's surface D. A part of the atmosphere that interacts with the ground 相关知识点: 试题...
"We don't really know when plate tectonics as it looks today got started, but we do know that we have continental crust that was likely scraped off a down-going slab [a tectonic plate in a subduction zone] that is 3.8 billion years old," Van der Elst said. "We could guess that mea...
The difference in weight causes the ocean plate to subduct beneath the continental plate. The ocean plate melts in the upper mantle and it is recycled into new rocks. This clarifies what is plate tectonics theory of convergent boundaries.What is a transform boundary?
What type of boundary is caused by subduction? What tectonic plate is England on? What layer of the earth do tectonic plates float on? What are the types of tectonic plates? What tectonic plate is Los Angeles on? What is a trench in plate tectonics?
Plate boundaries are the edges where two plates meet. Most geologic activities, including volcanoes,earthquakes, and mountain building, take place at plate boundaries.“Read More about:What is Plate Tectonics?“ What are the 4 types of plate boundary?
The theory of plate tectonics is widely accepted by scientists and provides a robust framework with which to describe and predict the behavior of Earth's rigid outer shell – the lithosphere – in space and time. Expressions of plate tectonic interactions at the Earth's surface also provide ...
What is a tectonic plate? Geology: Geologists study geology to understand the formation of rocks and sediment that comprise the earth's ground and core. They may use carbon dating and study the topography of the land to ascertain how the earth is formed and has evolved. ...
What is the movement of the Earth's crust called? A. Plate movement B. Crust movement C. Plate tectonics D. Mantle movement 相关知识点: 试题来源: 解析 C。解析:文中“The movement of the Earth's crust is known as plate tectonics.”,地球地壳的运动被称为板块构造运动。反馈 收藏 ...
Nature is everywhere around us and it is up to us to appreciate its “essential qualities"21. What is paragraph 2 mainly about? B A. Nature is all around us B. The origin of the word "nature". C. How nature was born on Earth D. Why it is not easy to explain what nature really...
The Aleutian Trench stretches westward in a giant arc from the southwestern coastline of Alaska. This geological feature is part of the Pacific Ring of Fire, a tectonically active region that encircles the Pacific Ocean. Like most volcanically and seismi