1. What is gravity?
Gravity is the force that pulls objects towards each other. It is responsible for keeping planets in orbit around the sun and objects on Earth's surface.
2. How does gravity work?
Gravity is a force of attraction between two objects with mass. The larger an object's mass, the more gravity it has. The force of gravity between two objects decreases with distance.
3. Who discovered gravity?
Sir Isaac Newton is credited with discovering the concept of gravity. He formulated the law of universal gravitation, which describes the mathematical relationship between the mass of objects and the force of gravity between them.
4. How is gravity measured?
Gravity is typically measured using a device called a gravimeter. Gravimeters can detect small changes in the Earth's gravitational field and are used in geophysical surveys to map variations in gravity.
5. What are some effects of gravity?
Gravity affects the motion of objects on Earth, keeping them grounded and causing objects to fall towards the ground when dropped. Gravity also plays a key role in determining the orbits of planets and other celestial bodies in space.
investigating gravity quick check
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