Earthquakes- You are in class at school, and suddenly a bell starts to ring very loudly. The teacher asks you all to leave the room calmly and walk outside to a safe place for attendance to be taken. You are having a fire drill, just as students in school do every year. Now imagine yourself sitting in your classroom and hearing the same bell ring. This time the teacher asks everyone to get under the desks. You are having an earthquake drill. Students who live in places where earthquakes can happen have earthquake drills as well as fire drills.
Volcanoes- Scientist have collected information indicating that a hot spot under Hawaii is responsible for the volcanic activity there. A hot spot location where the temperature under the crust is much higher than elsewhere. As a result lava is forced upwards, through cracks in Earth's crust. The people who live in Hawaii see lava flowing almost contonuously from Mauna Loa.
Mountains- As well as moving from side to side, faults can move up and down, or vertically. Vertical faults are called normal faults if the rock moves down, and reverse faults if the rock is pushed up. Mountain ranges are often the result of more than one kind of action. Mountains created as a result of both folding and faulting are described as complex mountains. The photos of the Rokies show folding in the rock layers and faulting in places where the layers are broken away.
No comments:
Post a Comment