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Astronomy Unit 5
| Question | Answer |
|---|---|
| 1.1 ________________ is the change in direction of Earth's axis. | Precession |
| 1.2 _______________ describes imperfections in the described cone. | Nutation |
| 1.3 ______________ is when the Sun seems to move. | Ecliptic |
| 1.4 The _____________ is a rough calendar. | zodiac |
| 1.5 ______________ is when solar wind and magnetic field interact. | Bow shock |
| 1.6 The _______________ is the barrier to meteors and ultraviolet rays. | stratosphere |
| 1.7 The _______________ is a special oxygen molecule. | ozone |
| 1.8 The ______________ is also the mesosphere. | noctilucent cloud |
| 1.9 The _______________ is a radio reflector. | ionosphere |
| 1.10 A _______________ is the lighted hemisphere that cannot be seen. | new moon |
| 1.11 The _______________ was created in A.D. 1582. | Gregorian calendar |
| 1.12 Homosphere means "_____________". | sam globe |
| 1.13 Troposphere means "_____________". | changing globe |
| 1.14 Heterosphere means "____________". | different globe |
| 1.15 Stratosphere means "______________". | layer globe |
| 1.16 Mesosphere means "_______________". | middle globe |
| 1.17 Thermosphere means "______________". | heat globe |
| 1.18 Exosphere means "_________________". | outer globe |
| 1.19-1.22 study in book. | |
| 1.23 Since there is _________ of a day's length, problems arise when a set _______________ is established to count a year of them. | variation; measurement |
| 1.24 We us an ______________ of a day's length for calendrical purposes. | average |
| 1.25 The distance of 148,800,000 km has been established as the "_____________________". | astronomical unit |
| 2.1 An ________________ is a mass. | aggregate |
| 2.2 __________________ is a large heap of loose lava. | Cinder cone |
| 2.3 ________________ is scattered remains. | Debris |
| 2.4 ______________ is to wear away gradually. | Erode |
| 2.5 To ___________________ is to come between. | interpose |
| 2.6 To _______________ is to spring back. | recoil |
| 2.7 _________________ is close to Earth. | Perigee |
| 2.8 __________________ named lunar mountains. | Selenographia |
| 2.9 _________________ means Sea of Showers. | Mare Imbrium |
| 2.10 _________________ means Sea of Clouds. | Mare Nubium |
| 2.11 _________________ means Sea of Storms. | Mare Procellarum |
| 2.12 ________________ means Bay of Rainbows. | Sinus Iridum |
| 2.13 The moon makes one rotation for each ______________. | revolution |
| 2.14 Many of the _______________ mountain ranges bear _____________ of Earth's mountain ranges. | Lunar; names |
| 2.15 ______________________ used poetic names for the Moon's maria. | Giambattista Riccioli |
| 2.16 The Moon's far side is far more __________________ than the near side. | heavily cratered |
| 2.17 Both the moon and the Sun contribute to _____________________ on Earth. | tidal movements |
| 2.18 The maximum high tide is called the __________________. | spring tide |
| 2.19 The minimum high tide is called the _________________. | neap tide |
| 2.20 Whenever the Moon passes partially or wholly into Earth's shadow cone, a _______________ eclipse occurs. | lunar |
| 2.21 A ______________ occurs whenever the Moon interposes between Earth and Sun. | solar eclipse |
| 2.22 Whenever the Moon's shadow cone fails to reach Earth, an _____________________ occurs. | annular eclipse |
| 2.23 T/F A lunar shadow cone has only one area of darkness. | F |
| 2.24 T/F Sunlight shines through lunar valleys in a display known as Selene's necklace. | F-Bailey's beads |
| 2.25 T/F Librations allow us to see 59% of our Moon's surface. | T |
| 3.1 ________________ means opposite. | Contrary |
| 3.2 __________________ is a distinctive mark. | Designation |
| 3.3 __________________ is written evidence. | Documentation |
| 3.4 A __________________ is a small,thin piece. | flake |
| 3.5 _________________ means caused by motion. | Kinetic |
| 3.6 __________________ is the fourth state of matter. | Plasma |
| 3.7 ________________ means to crush to powder. | Pulverize |
| 3.8 ______________ means to spread out from the center. | Radiate |
| 3.9 __________________ is a layer of rock. | Stratum |
| 3.10 _______________ is to look at carefully. | Survey |
| 3.11 ________________ means a large number of things. | Swarm |
| 3.12 A _____________ is a small body of matter from outer space that enters the earth's atmosphere, appearing as a streak of light. | meteor |
| 3.13 A _____________ is an object in space. | meteoroid |
| 3.14 A _______________ is an object that has hit the Earth. | meteorite |
| 3.15 Iron meteorites are ____ of the total. | 7% |
| 3.16 Stony-iron meteorites are ______ of the total. | 1% |
| 3.17 Stony meteorites are _________ of the total. | 92% |
| 3.18 A meteorite may be called a ______________ if it contains silicate crystals. | chondrite |
| 3.19 Meteor showers occur when ____________________________ swarms of meteoroids. | Earth's orbit takes it through |
| 3.20 Three especially prominent meteor showers are: 1. ____________ 2. ________________ 3. ________________ | Perseid, Orionid, Leonid |
| 3.21 Meteoroids result from debris left behind by _______________. | comets |
| 3.22 Meteorite ________________ are gathered shortly after a meteorite has struck. | falls |
| 3.23-3.25 study in book. | |
| 4.21 _____________________ used a pendulum to show Earth's rotation. | Jean Foucault |
| 4.22 __________________ led the science team that discovered Earth's radiation belts. | James Van Allen |
| 4.23 ____________________ sponsored the calendar we now use. | Pope Gregory XIII |
| 4.24 ___________________ applied poetic names to lunar features. | Giambattista Riccioli |
| 4.25 ____________________ described the sparkling seen as the Moon covers the photosphere. | Francis Baily |
| 4.26 __________________ first correctly voiced the correct concept of meteorites. | Ernst Chladni |
| 4.27 __________________ made the first chemical analysis of a meteorite. | Edward Howard |
| 4.28 List three of Earth's six movements. 1. _____________________ 2. ____________________ 3. _______________________ | Earth's axis precesses; The axis nutates; Revolution around the Sun to produce the yearly cycle |
| 4.29 Modern astronomers must contend with a very high degree of _____________ in their work. | precision |
| 4.30 _______________ result from the Moon's gravitational pull on Earth's poles. | Nods |
| 4.31 At the _____________, a majority of the solar wind is deflected around Earth. | bow shock |
| 4.32 Since there is variation of a day's length, problems arise when a set ___________________ is established to count them. | measurement |
| 4.33 Winter arrives north of the equator on or about _____________. | December 22 |
| 4.34 Summer arrives north of the equator on or about _______________. | June 21 |
| 4.35 The name of the calendar we now use is the _______________ calendar. | Gregorian |
| 4.36 The northern limit of the Sun's direct rays is the Tropic of _______________. | Cancer |
| 4.37 "______________" means "equal night." | Equinox |
| 4.38 We use an ______________________ for calendrical purposes. | average solar day |
| bow shock, stratosphere and what role it plays, why important mixture of gases, lunar eclipse, meteor showers How much time is a galactic year, synodic month, nutation, precession, sidereal month |
Created by:
jhincks
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