Chapter 7 - Gravity

This bingo card has 25 words: Earth and planets move in circles around the Sun., The time it takes to complete one orbit., Foci, The Kuiper belt or the Oort cloud., Planets move faster at perihelion and slower at aphelion., The distance term is squared in the equation for Newton's law of universal gravitation., the Moon is constantly falling toward Earth but also moving forward, resulting in its orbit around the Earth., It allowed scientists to measure G, which then made it possible to calculate Earth's mass using Newton's law of universal gravitation, Orbits Earth in a nearly circular orbit allowing us to treat it as uniform circular motion., The North Pole is tilted toward the Sun., Sequential changes in the appearance of the Moon as it orbits Earth., Gravitational Force, the Moon moves 13 degrees in its orbit over a 24-hour period., the gravitational forces of the Sun and the Moon are combined., The Moon passes directly between the Sun and Earth, blocking the Sun from view., Its orbit is tilted relative to the ecliptic plane., They are the same., Newton's second law., One is an objects resistance to change and one is a response to gravity., They are equivalent because the effects of gravitational mass and inertial mass cancel each other, Mass causes space to be curved, and other bodies are accelerated because of the way they follow this curved space., Mass changes the space around it., Inertial mass and gravitational mass are equal in magnitude., It warps the space around it to such an extreme degree that nothing, not even light, can escape its gravitational pull. and The Sun, Moon, stars, and planets move in perfect circles with the Earth at the center..

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