1. Gravity: The force of gravity on the Earth's surface varies depending on the location. For example, objects at higher altitudes experience less gravitational force than objects at lower altitudes.
2. Atmospheric Pressure: The atmospheric pressure on the Earth's surface varies depending on the location. For example, objects at higher altitudes experience less atmospheric pressure than objects at lower altitudes.
3. Temperature: The temperature on the Earth's surface varies depending on the location. For example, objects at higher altitudes experience lower temperatures than objects at lower altitudes. This can cause objects to expand or contract, which can affect their weight.
Give three reasons why the weight of an object vary on the earth surface
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