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Apologia Module 11

part 1:The Forces in Creation

QuestionAnswer
Gravitational force Any objects that have the same mass are attracted to each other. It is also the weakest
Electromagnetic force Exsists between particles with a charge. Can be attracted or repulsive
Weak force Governs certain radioactive process in atoms
Strong force Responsible for holding the center of the atom together
First Law of Gravitation All objects with a mass are attracted to one another by the gravitational force
Second Law of Gravitation The gravitational force between two masses is directly proportional to the mass of each object
Thrid Law of Gravitation The gravitational force between two masses is inversely proportional to the square of the distance between those two objects
Centripetal force The force necessary to make an object move in a circle. It is directed perpendicular to the velocity of the object, which means it points toward the center of the circle
First principle of Centripetal force Circular motion requires centripetal force
Second principle of Centripetal force The larger the centripetal force, the faster an object travels in a circle of a given size
Third principle of Centripetal force At a given speed, the larger the centripetal force, the smaller the circle
Short-period An object that takes less than 200 years to make an orbit
Long-period Objects that take more than 200 years to orbit the sun
Very long-period Objects that take more than 5,ooo years to make one orbit
Kuiper belt A band that is 150-mile wide body
Oort cloud A big shell of icy bodies that surrounds the solar system well beyond pluto
Solar wind Particles that push away from the sun causing a "wind"
Created by: Makenshi
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