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Astronomy Unit 1

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
1.1 A large, solid body that revolves about a star is a ______________.   planet  
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1.2 An educated guess is a _____________.   theory  
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1.3 To collect into an organized whole is also called to ____________.   embody  
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1.4 To be characterized by a completed round of events is also called being ______________.   cyclical  
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1.5 To spread from person to person is also called ______________.   propagation  
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1.6 We need _________________ to establish new truth, as well as reason.   experimentation  
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1.7 A _____________ lens curves inward.   concave  
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1.8 A ____________ lens curves outward.   convex  
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1.9 The ____________ model puts the Sun at the center of our solar system.   heliocentric  
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1.10 _______________________ was the first to use a telescope for astronomy.   Galileo Galilei  
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1.11 A renewed interest in learning in Europe took place during its ____________.   Renaissance  
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1.12 _________________ established true shapes for planetary orbits.   Johannes Kepler  
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1.13 This word translates literally as "star law." ____________   astronomy  
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1.14 The _______________ is the view port for a telescope.   eye piece  
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1.15 A false idea of planetary motion involved use of an ___________.   epicycle  
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1.16 A _____________ is the largest measurement the Sumerians used for plotting sky positions.   degree  
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1.17 A ______________ is the middle measurement the Sumerians used for plotting sky positions.   minute  
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1.18 A ____________ is the smallest measurement the Sumerians used for plotting sky positions.   second  
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1.19 Something directly observable for measurement by science is a ____________.   phenomenon  
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1.20 An act designed to discover new truth is an _____________.   experimentation  
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2.1 T/F All experimental results, even negative ones, are valuable to know.   True  
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2.2 ______________ is resistance to change in motion.   Inertia  
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2.3 _____________ is the description of an object's state of motion.   Momentum  
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2.4 _____________ is the distance and direction traveled by a moving object in a certain period of time.   Velocity  
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2.5 ___________ is the amount of material in any object.   Mass  
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2.6 _____________ is a greater or lesser amount.   Magnitude  
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2.7 ____________ is the rate at which change in velocity occurs.   Acceleration  
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2.8 __________ is the area swept out by an imaginary line in equal amounts of time.   Angular momentum  
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2.9 __________ is also called influence.   Impress  
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2.10 An object moving in a frictionless environment remains in motion unless ________________.   acted upon by an outside force  
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2.11 Change in an object's motion is _______________ to the force impressed.   proportional  
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2.12 Since Kepler's time, we have known the only force acting on a __________ must be directed toward the ____________.   planet, Sun  
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2.13 All forces occur in ___________ that are __________ and ___________ to each other.   pairs, equal, opposite  
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2.14 If a force is applied to an object, the ____________ will exert an equal and opposite force __________.   object, back  
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2.15 A _____________ is a general truth or law.   principle  
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2.16 _______________ is the science branch that explores all phenomena of light energy.   Optics  
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2.17 _______________ is the force that causes rotation.   Torque  
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2.18* The revolution rate of a planet about its sun ___________ with that planet's distance from its sun.   varies  
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2.19* One important factor about scientific law is that it can be described by ______________.   mathematics  
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2.20 The formula for calculating amount of force is mass _________ acceleration.   times  
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3.1 Ideas that are critical to understanding how gravitation works are: A. it is proportional to the _____________ of any object and B. it is _____________ proportional to the square of the ___________ between any two objects.   mass, inversely, distance  
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3.2 A critical point to know when applying the law of universal gravitation is that the force of ______________ between any two objects is proportional to the ______________ of their masses.   attraction, product  
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3.3 ______________ draws objects away from a center.   Centrifugal force  
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3.4 ________________ draws objects toward a center.   Centripetal force  
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3.5 _______________ is the attractive force of two objects for each other.   Gravitation  
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3.6 _______________ keeps the Moon in orbit about our planet.   Centripetal acceleration  
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3.7 ______________ uses mirrors to send light through an eye piece.   Reflecting telescope  
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4.1 ____________ had a calendar with 365 days in it and three seasons in the year.   Egyptians  
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4.2 _____________ was the first known person to invent the telescope.   Hans Lippershey  
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4.3 ________________ was willing to deal with the difficulties of the heliocentric view and had a glimmering to the truth.   Nicholas Copernicus  
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4.4 _________________ established the true shapes of planetary orbits.   Johannes Kepler  
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4.5 __________________ was one Greek thinker who held the heliocentric view.   Heraclides  
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4.6 __________________ divided the sky into degrees, minutes, and seconds to plot sky positions, which measures we still use.   Sumerians  
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4.7 __________________ first used the telescope to observe the heavens and found mountains on the Moon.   Galileo Galilei  
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4.8 ___________________ described the law of universal gravitation and even named the phenomenon.   Isaac Newton  
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4.9 __________________ was able to produce a geocentric view which was accepted as true for over 1,500 years.   Ptolemy  
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4.10 __________________ made some of the most accurate measurements of planetary movements, all without a telescope.   Tycho Brahe  
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4.11 __________________ is greater or lesser amounts.   Magnitude  
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4.12 __________________ is the distance and direction traveled by a moving object in a certain period of time.   Velocity  
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4.13 __________________ is resistance to change in motion.   Inertia  
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4.14 ________________ is the change in velocity.   Acceleration  
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4.15 __________________ is the area swept out by an imaginary line in equal amounts of time.   Angular momentum  
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4.16 _________________ is an act designed to discover new truth.   Experimenting  
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4.17 Gravitation is _______________ to the mass of any object and ___________ proportional to the _______________ of the distance ____________ any two objects.   proportional, inversely, square, between  
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4.18 ____________________ keeps the Moon in orbit about our planet.   Centripetal acceleration  
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4.19 _______________ draws objects away from center.   Centrifugal  
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4.20 ________________ draws objects toward a center.   Centripetal  
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4.21 The mass of one object and the mass of a second object determines the ___________________ between them.   gravitational attraction  
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4.22 All ___________________ results are valuable to know.   experimental  
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