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Astronomy Unit 2

QuestionAnswer
1.1 An electromagnetic wave consists of a/an ____________ and a/an ______________. magnetic wave, electrical wave
1.2 Wavelength is the distance between __________ equal points on consecutive wave forms. two
1.3 Electromagnetic radiation types differ from one another only in ___________. wavelength
1.4 ______________ is the color having all wavelengths blended. White
1.5 A _____________ is an intervening substance through which an effect may be transported. medium
1.6 A ______________ acts as if it is both a particle and a wave. photon
1.7 A ____________ is a body of knowledge used to describe an effect. model
1.8 _____________ means to become aware of through the senses. Perceive
1.9 ____________ is a range of wavelengths. Color
1.10 A ______________ is a unit of radiant energy. photon
1.11 The spectrum derives from a/an ___________. image
1.12 ______________ is the bending and slowing of light. Refraction
1.13 The _______________ is a band of colors. visible spectrum
1.14 A _____________ is a glass triangle. prism
1.15 _____________ does NOT happen when a light ray enters a prism at a perpendicular angle. Refraction
1.16 A light ray ______________ when it enters a prism at a perpendicular angle. slows down
1.17 _______________ brought forth the electromagnetic theory of light. James Maxwell
1.18 _________________ first produced a visible spectrum. Isaac Newton
1.19 ___________________ is the modern preferred means to produce a visible spectrum. Diffraction grating
2.1 The front lens of a refracting telescope is the _________________ lens. objective
2.2 The rear lens of a refracting telescope is the ________________. eyepiece
2.3 The invention of the _____________ lens improved refractor telescope quality. compound
2.4 Newton's 1668 invention was the __________________ telescope. reflecting
2.5 Both the camera and the CCD can form _______________ images of dim objects over many hours. built-up
2.6 ________________ means to dim the shine of. Tarnish
2.7 A ring of light surrounding an object is a _____________. halo
2.8 When all light rays cannot be brought to a focus, there is an _____________. aberration
2.9 Anything shaped like a parabola is said to be _______________. parabolic
2.10 Anything pertaining to color is said to be ________________. chromatic
2.11 What is one disadvantage of the CCD? It could make images of only a very small slice of the night sky in one exposure.
2.12 The _____________ or _____________ is the electronic replacement for the camera. CCD, charge-coupled device
2.13 The ____________________ innovation was very lightweight and if one segment became unusable, it could be replaced without great difficulty. Cassegrainian
2.14 An ____________ is also a speculum. alloy
2.15 A _____________ is a section of a whole. segment
2.16 _____________ means of the earth. Terrestrial
2.17 _____________ created the compound lens. Chester Hall
2.18 Edward Synge created the _______________. multiple telescope
2.19 ______________ is used to coat glass. Silver nitrate
2.20 _______________ discovered two moons. William Herschel
3.1 To gain ever more insight into the workings of the universe is the reason ___________________ is studied in such detail. electromagnetic radiation
3.2 Any heated object emits _____________ radiation. infrared
3.3 The facility in New Mexico that receives electromagnetic radiation from space is the ____________. VLA
3.4 A radio dish has a _____________ shape. parabolic
3.5 A radio dish is made of ________________ or _______________. wire mesh, metal sheets
3.6 A radio telescope ______________, ____________, and preserves incoming signals. receives, amplifies
3.7 The receiver ________________ the incoming signals. amplifies
3.8 Radio waves are the __________________ of electromagnetic waves. longest
3.9 One major goal of radio astronomy is to match detected radio waves with the ______________ and ______________ which produced them. conditions, processes
3.10 ____________________ is the procedure by which a very large radio dish may be simulated. Interferometry
4.1 _________________ is a body of knowledge used to describe a physical effect. Model
4.2 ______________ is to issue forth from a center. Radiate
4.3 _____________ pertains to color. Chromatic
4.4 _____________ means vapor ball. Atmosphere
4.5 _________________ is the change in light waves passing near the edges of a gap. Diffraction
4.6 _________________ is the distance between two equal parts on consecutive wave forms. Wavelength
4.7 _______________ resembles a parabola. Parabolic
4.8 ___________ means winding like a screw thread. Spiral
4.9 _______________ is a nuclear reaction. Fusion
4.10 ______________ is a gas. Vapor
4.11 _________________ is a device that responds to conditions. Sensor
4.12 _________________ is the nearer lens to the sky. Objective
4.13 An electromagnetic wave consists of a ________________ wave and an _____________ wave. magnetic, electrical
4.14 Electromagnetic waves differ from one another only in ______________. wavelength
4.15 A __________________ is a unit of radiant energy. photon
4.16 A _________________ is both a particle and a wave. photon
4.17 The modern preferred means to produce a visible spectrum is a _________________. diffraction grating
4.18 Both the ____________ and the _____________ can form built-up images of dim objects. camera, CCD
4.19 An _______________ occurs when all light rays cannot be brought to a single focus. aberration
4.20 The name the letters CCD stand for is _________________. charge-coupled device
4.21 The proposer of the multiple telescope is ______________. Edward Synge
4.22 A hot object emits ___________________ radiation. infrared
4.23 A telescope that receives, amplifies, and preserves radio signals is a ______________ telescope. radio
4.24 One major goal of radio astronomy is to match detected radio waves with the conditions and processes that _________________. produce them
4.25 The process by which a very large radio dish may be simulated is called ___________________. interferometry
Created by: jhincks