Стр.138 По учебной программе ГДЗ Комарова Ларионова 7 класс
Across the curriculum Geography Earthquakes 1 Read the texts and name the points labelled A-I on the diagrams. Use the words in bold.
Решение #
Решение #
Приведем выдержку из задания из учебника Комарова, Ларионова 7 класс, Русское слово:
Across the curriculum Geography
Earthquakes
1 Read the texts and name the points labelled A-I on the diagrams. Use the words in bold.
What is an earthquake?
Sometimes two blocks of the Earth’s crust move along a faultline. When this happens it can cause an earthquake. The place under the Earth where the earthquake starts is called the focus. Directly above it, on the surface, is the picenter.
How do we measure earthquakes?
Scientists use seismometers to measure earthquakes. An earthquake’s size is its magnitude, or how much energy is released during the earthquake. Scientists use the Richter Scale to say how big the earthquake was.
Why do earthquakes happen?
The Earth has four layers: the inner core, outer core, mantle and crust. The crust, which covers the Earth’s surface, is divided into large blocks that are constantly moving. We call these pieces tectonic plates. The edges of the plates are called plate boundaries. The plate boundaries often get stuck, and when they finally move, it causes an earthquake. The movement releases energy in the form of seismic waves. These waves cause the ground to shake – or quake.
2 Read the sentences choosing the correct words.
1 The place where an earthquake starts is called the focus.
2 The crust core covers the Earth’s surface.
3 The edges of tectonic plates are called plate boundaries.
4 A seismometer is an instrument for measuring earthquakes.
5 The magnitude of an earthquake is how much the ground energy is released
during an earthquake.