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Chapter 8 Quarter Exam

Author: Ocean View Physics
Across
The closest position from the sun in the planet's orbit
Refers to the attractive force exerted by a planet, a star, or other celestial body upon objects near their surfaces
The force responsible for certain particle interactions in the radioactive decay of atomic nucleui
The time required to complete one orbit about the sun.
A force that exists only between electrically charged bodies
notion that the sun is the center of the solar system
The strongest force of the four fundamental forces
Force that acts against every object in motion in the opposite direction
The farthest position from the sun in the planet's orbit
friction due to the resistance to start sliding
Kepler's law of planetary motion (law of orbits)
Down
It is the weakest of all forces, exists between any two bodies of matter
A force that always acts perpendicular to the surface
Proposed the heliocentric theory of the solar system
Equilibrium where an object that remains at rest within earth's gravitational field
Notion that the earth is the center of everything
Developed the laws of planetary motion
the point in an object that describes the combined effect of all the individual particles of mass
Newton's first law of motion
Seeks to explain motion by describing its causes
SI unit of force
friction due to the resistance to sliding
Any push or pull
Is the force exerted on an object's mass by the earth's gravity