B & W Chapter 21 Word Scramble
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| Question | Answer |
| TELESCOPE | A DEVICE BUILT TO OBSERVE DISTANT OBJECTS BY MAKING THEM APPEAR CLOSER |
| VISIBLE LIGHT | ELECTROMAGNETIC WAVES THAT ARE VISIBLE TO THE HUMAN EYE |
| WAVELENGTH | THE DISTANCE BETWEEN THE CREST OF ONE WAVE TO THE CREST OF THE NEXT WAVE |
| SPECTRUM | THE RANGE OF WAVELENGTHS OF ELECTROMAGNETIC WAVES |
| OPTICAL TELESCOPE | A TELESCOPE THAT USES LENSES OR MIRRORS TO COLLECT AND FOCUS VISIBLE LIGHT |
| ELECTROMAGNETIC RADIATION | THE ENERGY TRANSFERRED THROUGH SPACE BY ELECTROMAGNETIC WAVES |
| REFRACTING TELESCOPE | A TELESCOPE THAT USES CONVEX LENSES TO GATHER AND FOCUS LIGHT |
| CONVEX LENS | A PIECE OF TRANSPARENT GLASS CURVED SO THAT THE MIDDLE IS THICKER THAN THE EDGES |
| REFLECTING TELESCOPE | A TELESCOPE THAT USES A CURVED MIRROR TO COLLECT AND FOCUS LIGHT |
| RADIO TELESCOPE | A DEVICE USED TO DETECT RADIO WAVES FROM OBJECTS IN SPACE |
| OBSERVATORY | A BUILDING THAT CONTAINS ONE OR MORE TELESCOPES |
| CONSTELLATION | AN IMAGINARY PATTERN OF STARS IN THE SKY |
| SPECTROGRAPH | AN INSTRUMENT THAT SEPARATES LIGHT INTO COLORS AND MAKES AN IMAGE OF THE RESULTING SPECTRUM |
| APPARENT BRIGHTNESS | THE BRIGHTNESS OF A STAR AS SEEN FROM EARTH |
| ABSOLUTE BRIGHTNESS | THE BRIGHTNESS A STAR WOULD HAVE IF IT WERE A STANDARD DISTANCE FROM EARTH |
| LIGHT-YEAR | THE DISTANCE LIGHT TRAVELS IN ONE YEAR |
| PARALLAX | THE APPARENT CHANGE IN POSITION OF AN OBJECT WHEN SEEN FROM DIFFERENT PLACES |
| HERTZSPRUNG-RUSSELL DIAGRAM | A GRAPH RELATING THE SURFACE TEMPERATURES AND ABSOLUTE BRIGHTNESSES OF STARS |
| MAIN SEQUENCE | A DIAGONAL AREA ON AN H-R DIAGRAM THAT INCLUDES MORE THAN 90% OF ALL STARS |
| NEBULA | THE CLOUD-LIKE REGION OF GASES LEFT OVER IN THE REMAINS OF A SHRINKING, SUN-SIZED STAR |
| PROTOSTAR | A CONTRACTING CLOUD OF GAS AND DUST WITH ENOUGH MASS TO FORM A STAR |
| WHITE DWARF | THE BLUE-WHITE HOT CORE OF A STAR THAT IS LEFT BEHIND AFTER ITS OUTER LAYERS HAVE EXPANDED AND DRIFTED OUT INTO SPACE |
| SUPERNOVA | AN EXPLOSION OF A MASSIVE STAR |
| NEUTRON STAR | THE SMALL, DENSE REMAINS OF A HIGH-MASS STAR AFTER A SUPERNOVA |
| PULSAR | A RAPIDLY SPINNING NEUTRON STAR THAT PRODUCES RADIO WAVES |
| BLACK HOLE | AN OBJECT WHOSE GRAVITY IS SO STRONG THAT NOTHING, NOT EVEN LIGHT, CAN ESCAPE |
| BINARY STAR | A STAR SYSTEM WITH TWO STARS |
| ECLIPSING BINARY | A BINARY STAR SYSTEM IN WHICH ONE STAR PERIODICALLY BLOCKS THE LIGHT FROM THE OTHER |
| OPEN CLUSTER | A STAR CLUSTER THAT HAS A LOOSE, DISORGANIZED APPEARANCE AND CONTAINS NO MORE THAN A FEW THOUSAND STARS |
| GLOBULAR CLUSTER | A LARGE, ROUND, DENSELY-PACKED GROUPING OF OLDER STARS |
| GALAXY | A HUGE GROUP OF SINGLE STARS, STAR SYSTEMS, STAR CLUSTERS, DUST, AND GAS BOUND TOGETHER BY GRAVITY |
| SPIRAL GALAXY | A GALAXY WITH A BULGE IN THE MIDDLE AND ARMS THAT SPIRAL OUTWARD IN A PINWHEEL PATTERN |
| ELLIPTICAL GALAXY | A GALAXY SHAPED LIKE A ROUND OR FLATTENED BALL, GENERALLY CONTAINING ONLY OLD STARS |
| IRREGULAR GALAXY | A GALAXY THAT DOES NOT HAVE A REGULAR SHAPE |
| QUASAR | AN ENORMOUSLY BRIGHT, DISTANT GALAXY WITH A GIANT BLACK HOLE AT ITS CENTER |
| UNIVERSE | ALL OF SPACE AND EVERYTHING IN IT |
| SCIENTIFIC NOTATION | A MATHEMATICAL METHOD OF WRITING NUMBERS USING POWERS OF TEN |
| BIG BANG | THE INITIAL EXPLOSION THAT RESULTED IN THE FORMATION AND EXPANSION OF THE UNIVERSE |
| HUBBLE'S LAW | THE OBSERVATION THAT THE FARTHER AWAY A GALAXY IS, THE FASTER IT IS MOVING AWAY |
| COSMIC BACKGROUND RADIATION | THE ELECTROMAGNETIC RADIATION LEFT OVER FROM THE BIG BANG |
| SOLAR NEBULA | A LARGE CLOUD OF GAS AND DUST, SUCH AS THE ONE THAT FORMED OUR SOLAR SYSTEM |
| PLANETESIMAL | ONE OF THE SMALL ASTEROID-LIKE BODIES THAT FORMED THE BUILDING BLOCKS OF THE PLANET |
| DARK MATTER | MATTER THAT DOES NOT GIVE OFF ELECTROMAGNETIC RADIATION BUT IS QUITE ABUNDANT IN THE UNIVERSE |
| DARK ENERGY | A MYSTERIOUS FORCE THAT APPEARS TO BE CAUSING THE EXPANSION OF THE UNIVERSE TO ACCELERATE |
Created by:
bwise
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