A seismograph is a device that scientists use to measure earthquakes.
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Normal faults form when the hanging wall drops down. The forces that create normal faults are pulling the sides apart, or extensional.
Reverse faults form when the hanging wall moves up. The forces creating reverse faults are compression, pushing the sides together.
Trans current or Strike-slip faults have walls that move sideways, not up or down.
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Social Darwinism refers to various theories that emerged in Western Europe and North America in the 1870s that applied biological concepts of natural selection and survival of the fittest to sociology, economics, and politics.
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Answer:
- Check Your Welding Machine Power Source. Before power up your welding machine power source, it is important to have the correct settings on your welding machine.
- Choose The Accurate Welding Machine.
- Make Sure Your Equipment Is Clean.
- Take Safety Precautions.
- Adjust your machine for every weld.
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Hope it helps have a great day! ^_^
Answer:
If the magma has high gas content and high viscosity, the gas will expand in an explosive fashion and break the liquid into clots that fly through the air and cool along their path through the atmosphere. Alternatively it blast out solid pieces of rock that once formed the volcanic edifice.
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