Earthquakes And Tsunamis

Buildings on smooth and mud
Because much of San Francisco sits on a landfill, the sand and mud in the area can easily liquefy. When an temblor hits, the sand and mud trap the water. As the sand particles go forward to a denser arrangement, it pushes on the water and increases the water pressure. Demonstrate this rule by putting several inches of sand in a move. Fill the pan with water until it is almost to the top of the sand. pull a brick upright in the sand. Hit the side of the pan with a mallet and watch the reactions of the brick and the sand

Figuring the epicenter
When an temblor takes place, it is possible to find the epicenter of the earthquake. Give students the readings from three unlike seismograph machines that tell how far the earthquake was from the machine based on the speed of the waves. intent a scale of miles, a poke and a world map. Put the point of the compass in the city where the machine is and make a complete muckle for all three readings. The epicenter of the earthquake is where the three circles hybridize

Earthquake damage
Demonstrate what happens during an earthquake using clay. Roll break through two slabs of clay. Place them on two side-by-side sheets of plastic foam. Use colorful clay and build a little town on the clay. Include items like a road, house and turn over line.



Hold one piece of plastic foam hard and push the second piece with one quick motion. impose the items on top of the clay for damage caused by the earthquake. This employment can lead to a discussion of earthquake damage.

weighing machine Tectonics
To attempts to explain plate tectonics is to attempt to explain perfect drift. The movement of the plates is either convergent, divergent or conservative. To explain apiece type of plate, students will make a model presentation how the boundaries act when the land moves. The convergent plates move toward each different; divergent plates move apart. Conservative plates, like the San Andreas fault, slide previous(prenominal) each other

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