![]() It was built right in the middle of an earthquake zone. The Tokyo Sky Tree is the tallest tower in the world. A 4.5 reading is an earthquake causing slight damage and an 8.5 or 9 reading is a devastating earthquake. A 1.5 reading is the smallest earthquake one can feel. Earthquake ScaleĪ Richter Scale measures the magnitude or strength of an earthquake by how much energy the earthquake releases. Seismographs today, are rigid structures that record the motion of the earth using electrical signals. The seismograph you will build is an old-fashioned tool that makes use of a marker to record the movements made by the shaker table on a strip of paper. They are very sensitive to the earth’s movement. Seismographs are also used to detect earthquakes, volcanoes, and large explosions very far away. How is an Earthquake Measured?Ī seismograph is a tool used by scientists to measure the movement of the ground in an earthquake. Transform fault – This happens when the plates slip by each other, and this is also called Strike-Slip. This is where new ocean floors to develop. Many hills and mountains have been formed this way.ĭivergent boundary – This happens when the plates have drifted away from each other. Three Types of EarthquakesĬonvergent boundary – this happens when one plate is forced over another plate during an earthquake and this causes a Thrust Fault. There is an area of land called The Ring of Fire around the rim of the Pacific Ocean where 90% of all earthquakes take place. Millions of people all over the world, live in earthquake-prone areas. The place where the earthquake starts is called the Hypocenter and the place where it occurs on the Earth’s surface is called the Epicenter. When they are very strong, that they can be felt over 1 000 miles/1 609 km away. This happens all the time, but we don’t feel these earthquakes, as most of the time they are too small to reach us. ![]() ![]() When these plates hit bump or slide past another plate, an earthquake is caused! The surface where these plates slip is called the Fault. As the plates move, they cause pressure and tension by touching each other. They float on fluid and are always moving because they are not locked in place. These plates make up the earth’s crust which is the earth’s outermost layer. That is why you don’t feel every move they make.Įach of one those puzzle pieces are called Tectonic Plates. It is not one single piece of land but approximately 20 pieces of a puzzle that constantly move very slowly. The Earth’s surface is like a jigsaw puzzle. Now before we start building, let’s learn about Earthquakes! What is an Earthquake? The Science What causes Earthquakes?Įarthquakes are caused by the shaking, rolling or a sudden shock of the Earth’s surface.
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