Gravity is a fundamental force in the Universe. Test your knowledge with the following questions:

1. What is the force that pulls objects towards the center of the Earth? 2. Who discovered the law of universal gravitation? 3. What is the approximate acceleration due to gravity on Earth? 4. Does gravity have an effect on light? 5. What is the term for the point in space where the gravitational pull of a celestial body is zero?

Answer the questions to see how well you know about gravity!