True or False

1. Magma with a high silica content will be less viscous, therefore be more fluid.
2. An increase of one on the Richter scale corresponds to a tenfold increase in the amplitude of body wave
3. Magma is found on the surface, lava is beneath the surface.

Magma that contains high silica content will have higher viscosity. This is because they exhibit greater rate of polymerization unlike magma with less silica content

Therefore the number 1 statement is false.

A Richter scale is a device that is used to calculate an earthquakes size from the amplitude of the largest wave recorded by a seismograph.

One unit on the scale represents a 10-fold increase in the magnitude of an earthquake.

Therefore the number 2 statement is true.

Magma is a liquid rock found under the earth which can find its way to the surface of the earth through cracks and holes.

When magma finds its way to the surface of the earth it is called lava.

Therefore statement 3 is false.

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True or False 1. Magma with a high silica content will be less viscous, therefore be more fluid. 2. An increase of one on the Richter scale corresponds to a tenfold increase in the amplitude of body wave 3. Magma is found on the surface, lava is beneath the surface.

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True or False

1. Magma with a high silica content will be less viscous, therefore be more fluid.
2. An increase of one on the Richter scale corresponds to a tenfold increase in the amplitude of body wave
3. Magma is found on the surface, lava is beneath the surface.