B. Write True if the statement is correct and change the underlined word/s if it is wrong. 1. Gravity is a contact force that acts between two separate objects. 2. Gravity is the force exerted by the Earth which is equivalent to the mass of an object. 3. Gravity on the Moon is less than the gravity on the Earth. 4. Friction, unlike gravity, is a noncontact force. 5. Friction keeps objects from sliding off surfaces. 6. The principle of gravity was discovered by Sir Isaac Newton. 7. Friction is the force that opposes the push of gravity on objects. The lesser the mass of an object, the greater the pull of gravity on it. 8. 9. Gravity keeps anything from going up. 10. Gravitational pull between objects increases as the distance between them decreases.
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Answer:
1,False - Gravity is a non-contact force that acts between any two objects with mass.
2,False - Gravity is a force of attraction between two objects with mass, not just from the Earth.
3,True - The gravity on the Moon is approximately 1/6th of the gravity on Earth.
4,False - Friction is a contact force that occurs when two surfaces rub against each other.
5,True - Friction opposes motion and helps objects to stay in place.
6,True - Sir Isaac Newton formulated the laws of gravity.
7,False - Friction opposes motion and works against the force of gravity. The pull of gravity on an object depends on its mass.
8,(No underlined word to change)
9,False - Gravity pulls objects towards each other but doesn't prevent things from going up. The force of gravity decreases as the object moves further away from the source.
10,True - The force of gravity between two objects increases as the distance between them decreases.
Explanation: