Astronomy Unit 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| 1.1 An electromagnetic wave consists of a/an ____________ and a/an ______________. | magnetic wave, electrical wave
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| 1.2 Wavelength is the distance between __________ equal points on consecutive wave forms. | two
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| 1.3 Electromagnetic radiation types differ from one another only in ___________. | wavelength
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| 1.4 ______________ is the color having all wavelengths blended. | White
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| 1.5 A _____________ is an intervening substance through which an effect may be transported. | medium
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| 1.6 A ______________ acts as if it is both a particle and a wave. | photon
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| 1.7 A ____________ is a body of knowledge used to describe an effect. | model
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| 1.8 _____________ means to become aware of through the senses. | Perceive
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| 1.9 ____________ is a range of wavelengths. | Color
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| 1.10 A ______________ is a unit of radiant energy. | photon
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| 1.11 The spectrum derives from a/an ___________. | image
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| 1.12 ______________ is the bending and slowing of light. | Refraction
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| 1.13 The _______________ is a band of colors. | visible spectrum
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| 1.14 A _____________ is a glass triangle. | prism
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| 1.15 _____________ does NOT happen when a light ray enters a prism at a perpendicular angle. | Refraction
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| 1.16 A light ray ______________ when it enters a prism at a perpendicular angle. | slows down
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| 1.17 _______________ brought forth the electromagnetic theory of light. | James Maxwell
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| 1.18 _________________ first produced a visible spectrum. | Isaac Newton
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| 1.19 ___________________ is the modern preferred means to produce a visible spectrum. | Diffraction grating
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| 2.1 The front lens of a refracting telescope is the _________________ lens. | objective
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| 2.2 The rear lens of a refracting telescope is the ________________. | eyepiece
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| 2.3 The invention of the _____________ lens improved refractor telescope quality. | compound
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| 2.4 Newton's 1668 invention was the __________________ telescope. | reflecting
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| 2.5 Both the camera and the CCD can form _______________ images of dim objects over many hours. | built-up
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| 2.6 ________________ means to dim the shine of. | Tarnish
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| 2.7 A ring of light surrounding an object is a _____________. | halo
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| 2.8 When all light rays cannot be brought to a focus, there is an _____________. | aberration
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| 2.9 Anything shaped like a parabola is said to be _______________. | parabolic
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| 2.10 Anything pertaining to color is said to be ________________. | chromatic
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| 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.
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| 2.12 The _____________ or _____________ is the electronic replacement for the camera. | CCD, charge-coupled device
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| 2.13 The ____________________ innovation was very lightweight and if one segment became unusable, it could be replaced without great difficulty. | Cassegrainian
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| 2.14 An ____________ is also a speculum. | alloy
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| 2.15 A _____________ is a section of a whole. | segment
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| 2.16 _____________ means of the earth. | Terrestrial
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| 2.17 _____________ created the compound lens. | Chester Hall
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| 2.18 Edward Synge created the _______________. | multiple telescope
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| 2.19 ______________ is used to coat glass. | Silver nitrate
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| 2.20 _______________ discovered two moons. | William Herschel
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| 3.1 To gain ever more insight into the workings of the universe is the reason ___________________ is studied in such detail. | electromagnetic radiation
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| 3.2 Any heated object emits _____________ radiation. | infrared
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| 3.3 The facility in New Mexico that receives electromagnetic radiation from space is the ____________. | VLA
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| 3.4 A radio dish has a _____________ shape. | parabolic
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| 3.5 A radio dish is made of ________________ or _______________. | wire mesh, metal sheets
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| 3.6 A radio telescope ______________, ____________, and preserves incoming signals. | receives, amplifies
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| 3.7 The receiver ________________ the incoming signals. | amplifies
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| 3.8 Radio waves are the __________________ of electromagnetic waves. | longest
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| 3.9 One major goal of radio astronomy is to match detected radio waves with the ______________ and ______________ which produced them. | conditions, processes
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| 3.10 ____________________ is the procedure by which a very large radio dish may be simulated. | Interferometry
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| 4.1 _________________ is a body of knowledge used to describe a physical effect. | Model
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| 4.2 ______________ is to issue forth from a center. | Radiate
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| 4.3 _____________ pertains to color. | Chromatic
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| 4.4 _____________ means vapor ball. | Atmosphere
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| 4.5 _________________ is the change in light waves passing near the edges of a gap. | Diffraction
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| 4.6 _________________ is the distance between two equal parts on consecutive wave forms. | Wavelength
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| 4.7 _______________ resembles a parabola. | Parabolic
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| 4.8 ___________ means winding like a screw thread. | Spiral
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| 4.9 _______________ is a nuclear reaction. | Fusion
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| 4.10 ______________ is a gas. | Vapor
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| 4.11 _________________ is a device that responds to conditions. | Sensor
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| 4.12 _________________ is the nearer lens to the sky. | Objective
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| 4.13 An electromagnetic wave consists of a ________________ wave and an _____________ wave. | magnetic, electrical
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| 4.14 Electromagnetic waves differ from one another only in ______________. | wavelength
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| 4.15 A __________________ is a unit of radiant energy. | photon
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| 4.16 A _________________ is both a particle and a wave. | photon
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| 4.17 The modern preferred means to produce a visible spectrum is a _________________. | diffraction grating
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| 4.18 Both the ____________ and the _____________ can form built-up images of dim objects. | camera, CCD
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| 4.19 An _______________ occurs when all light rays cannot be brought to a single focus. | aberration
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| 4.20 The name the letters CCD stand for is _________________. | charge-coupled device
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| 4.21 The proposer of the multiple telescope is ______________. | Edward Synge
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| 4.22 A hot object emits ___________________ radiation. | infrared
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| 4.23 A telescope that receives, amplifies, and preserves radio signals is a ______________ telescope. | radio
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| 4.24 One major goal of radio astronomy is to match detected radio waves with the conditions and processes that _________________. | produce them
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| 4.25 The process by which a very large radio dish may be simulated is called ___________________. | interferometry
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