Forces of Creation
Gravity
Circular Motion
Gravitational Force at Work in our Solar System
Grab Bag
100
The force that exists between particles with an electrical charge.
What is the electromagnetic force?
100
The scientist who developed the equation for the "Universal Law of Gravitation."
Who is Sir Isaac Newton?
100
An object moving in a circle is constantly accelerating. The name of this type of acceleration.
What is centripetal acceleration?
100
The earth orbits the sun in this type of orbit.
What is an elliptical orbit?
100
The force that attracts objects with mass toward each other.
What is the gravitational force?
200
The force present when you drop an ball and it accelerates toward the earth.
What is gravitational force?
200
True or False The force that causes a ball to fall to earth is not the same force that holds the planets in orbit around the sun.
What is false?
200
The force necessary to make an object move in a circle.
What is centripetal force?
200
Planets orbit around the sun because of the gravitational attraction between each planet and the sun, but the planets do not fall into the sun because they all have velocities that are this to the sun's gravitational force.
What is perpendicular?
200
The force responsible for holding the center of the atom together.
What is the strong force.
300
Physicists believe these are the forces of creation.
What are gravitational, electromagnetic, weak, & strong?
300
How the gravitational forces compare when the gravitational force between two objects (mass/1 = 10kg, mass/2 = 6kg) is measured when the objects are 10 cm apart, and then the two masses are replaced with objects (mass/1 = 20kg, mass/2 = 3kg).
What is the gravitational force stays the same?
300
Centripetal force is directed perpendicular to the velocity of the object which means in points in this direction.
What is toward the center of the circle?
300
An object that orbits around a planet.
What is a satellite?
300
Planets are typically placed into these two groups.
What are the inner planets and outer planets?
400
The force that governs certain radioactive processes in atoms.
What is the weak force?
400
The relationship between the gravitational force between two masses and the mass of each object.
What is directly proportional?
400
TRUE OR FALSE Centrifugal force is the same thing as Centripetal force.
What is False?
400
DAILY DOUBLE The four largest known planetary satellites were discovered by this scientist and are collectively known by this name. (2 answers)
Who is Galileo and what are Galilean satellites?
400
These planets have planetary rings.
What are Saturn, Uranus, Jupiter, and Neptune?
500
The difference between gravitational and electromagnetic forces.
What is gravitational is always an attractive force, while electromagnetic can either be an attractive OR repulsive force?
500
The relationship between the gravitational force between two masses and the square of the distance between those tow objects.
What is inversely proportional?
500
DAILY DOUBLE Name 2 of the 3 principles regarding centripetal force listed in the book.
What is "Circular motion requires centripetal force?" What is "The larger the centripetal force, the faster the object travels in a circle of given size?" What is "At a given speed, the larger the centripetal force, the smaller the circle."
500
The motion of a planet is largely governed by the gravitational force of the sun, but small variations in the motion of a planet can be caused by other planets. This small variations are called this.
What are perturbations?
500
In 1950, a Dutch astronomer proposed a hypothesis that comets come from a big shell of icy bodies that surrounds the solar system well beyond Pluto. Name this shell.
What is the Oort Cloud?
M
e
n
u