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Astronomy Unit 1

QuestionAnswer
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