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