When you throw a ball into the air, it falls back down because of gravity. Gravity is the force that pulls objects towards each other. Everything with mass, like the Earth, has gravity that pulls things towards it. But sometimes, scientists notice that the strength of gravity is different than what they expect it to be in a particular area on Earth. This difference is called a gravitational anomaly.
Think of it as a bumpy road. When you drive a car on a bumpy road, it feels different than driving on a smooth road. Similarly, the gravitational anomaly means that the “road” of gravity on Earth is not smooth. Instead, there might be some areas where gravity is stronger or weaker than expected, which can affect how objects move and behave in that location.
Scientists study gravitational anomalies using instruments like gravimeters, which measure the strength of gravity. By studying gravitational anomalies, we can learn more about the Earth's structure and what's happening deep beneath the ground. It's like using a magnifying glass to see something very closely- scientists use gravitational anomalies to examine the Earth's surface at a more detailed level.