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Tremor produce waves on the surface of t...

Tremor produce waves on the surface of the earth are called as?

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**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks about the type of waves produced on the surface of the Earth due to tremors. 2. **Identifying the Cause of Tremors**: Tremors can occur due to various geological events such as earthquakes, volcanic eruptions, underground nuclear explosions, or meteor impacts. 3. **Linking Tremors to Wave Production**: These tremors generate waves that travel through the Earth and on its surface. 4. **Naming the Waves**: The waves produced by these tremors are specifically known as "seismic waves." 5. **Final Answer**: Therefore, the waves produced on the surface of the Earth due to tremors are called **seismic waves**. ---
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We can define two planes for a particular location on the surface of earth. One is called magnetic meridian and the other is called geographic meridian. Magnetic meridian for a point on the surface of earth is defined as a plane passing through this point and containing magnetic axis of earth. Similarly geographic meridian for a point on the surface of earth is defined as plane passing through this point and containing geographic axis of rotation. If we draw these two planes for a point on the surface of earth then in general these are found at some angle. Angle between these two planes is called declination for that place. Importance of magnetic meridian at a point is that net magnetic field vector of earth for that point lies on this plane. Usually net magnetic field of earth is inclined at some angle with the horizontal and this angle is called angle of dip for that place. How many points are there on the surface of earth where declination is zero ?

We can define two planes for a particular location on the surface of earth. One is called magnetic meridian and the other is called geographic meridian. Magnetic meridian for a point on the surface of earth is defined as a plane passing through this point and containing magnetic axis of earth. Similarly geographic meridian for a point on the surface of earth is defined as plane passing through this point and containing geographic axis of rotation. If we draw these two planes for a point on the surface of earth then in general these are found at some angle. Angle between these two planes is called declination for that place. Importance of magnetic meridian at a point is that net magnetic field vector of earth for that point lies on this plane. Usually net magnetic field of earth is inclined at some angle with the horizontal and this angle is called angle of dip for that place. How many points are there on surface of earth where angle of dip is zero ?