For more about astronomy,
look for these articles:
22 Asian American BRITANNICA STUDENT ENCYCLOPEDIA
Mausoleum picture, volume 1
page 131
Turkey volume 13 page 113
Atbara River (river in Africa)
Nile River volume 9 page 72
Athapaskan (Native American people)
MAIN ARTICLE volume 1 page 216
MORE TO EXPLORE
Athapaskan child picture, volume 1
page 216
Northwest Territories volume 9 page 95
Yukon volume 15 page 97
Atharvaveda (Hindu literature)
Veda volume 14 page 60
Athena (Greek goddess)
MAIN ARTICLE volume 1 page 217
MORE TO EXPLORE
Athens volume 1 page 218
Perseus volume 10 page 60
Zeus volume 15 page 104
Athens (capital city of Greece)
MAIN ARTICLE volume 1 page 218, picture,
volume 1 page 218
MORE TO EXPLORE
Acropolis volume 1 page 19
ancient Greece volume 5 page 154
Athena volume 1 page 218
city-state volume 3 page 126
Greece volume 5 page 151
PersianWars volume 10 page 63
athlete: see in index sports
athletics (sports): see in index track and
field
Atlanta (state capital of Georgia, U.S.)
MAIN ARTICLE volume 1 page 219
MORE TO EXPLORE
Centennial Olympic Park picture, volume
1 page 219
Georgia volume 5 page 101
Atlanta Braves (baseball team)
Aaron volume 1 page 7
Atlantic cod (fish)
cod volume 3 page 147
Atlantic manta (fish)
ray volume 11 page 30
Atlantic Migration (international history)
human migration volume 8
page 128
Atlantic Ocean
MAIN ARTICLE volume 1 page 220, picture,
volume 1 page 221
MORE TO EXPLORE
“Mayflower” picture, volume 8 page 83
ocean volume 9 page 117
volcano volume 14 page 100
Atlantic puffin (bird) picture, volume 4
page 36
Atlantic salmon (fish)
salmon volume 12 page 22
Atlas (Greek mythology)
MAIN ARTICLE volume 1 page 222
MORE TO EXPLORE
atlas volume 1 page 223
Titans volume 13 page 71
atlas (collection of maps)
MAIN ARTICLE volume 1 page 223, picture,
volume 1 page 223
atlas (vertebra)
skull volume 12 page 103
atman (Hindu philosophy)
Hinduism volume 6 page 56
atmosphere (gaseous envelope)
MAIN ARTICLE volume 1 page 223
MORE TO EXPLORE
aurora volume 1 page 228
Earth volume 4 page 89
environment volume 4 page 143
sun volume 12 page 203
water volume 15 page 23
atmospheric pressure
vacuum volume 14 page 50
weather volume 15 page 27
atoll (reef and landform): see in index
coral atoll
atom (matter)
MAIN ARTICLE volume 1 page 224
MORE TO EXPLORE
chemical element volume 3 page 86
chemistry volume 3 page 87
components picture, volume 1 page 225
crystal volume 3 page 226
electricity volume 4 page 120
molecule volume 8 page 155
nuclear energy volume 9 page 103
radiation volume 11 page 16
atom bomb (fission device): see in index
atomic bomb
atomic bomb (fission device)
bomb volume 2 page 104
Hiroshima volume 6 page 60
Japan volume 7 page 15
mushroom cloud picture, volume 2
page 105
New Mexico volume 9 page 52
Truman volume 13 page 101
war volume 15 page 10
weapon volume 15 page 26
WorldWar II volume 15 page 70
Atomic Bomb Dome (building in
Hiroshima, Japan)
Hiroshima volume 6 page 60
atomic clock (instrument)
clock volume 3 page 141
atomic energy (physics): see in index
nuclear energy
atomic nucleus (physics)
atom volume 1 page 224, picture, volume
1 page 225
nuclear energy volume 9 page 103
radiation volume 11 page 17
atomic number (physics)
atom volume 1 page 225
chemical element volume 3 page 86
atomic weight (chemistry and physics)
atom volume 1 page 225
Atonement, Day of (Judaism): see in
index Yom Kippur
atrium (heart anatomy)
cardiovascular system volume 3 page 38
heart volume 6 page 31
human heart picture, volume 6 page 31
Atsina (Native American people): see in
index Gros Ventre
attack aircraft
air force volume 1 page 52
attention-deficit/hyperactivity disorder
(medical disorder)
mental illness volume 8 page 101
Attila (king of the Huns)
Attila the Hun with his warriors picture,
volume 6 page 99
Huns volume 6 page 99
attitude (ballet position)
ballet volume 2 page 14
Attiwandaron (Native American people)
Ontario volume 9 page 140
BRITANNICA STUDENT ENCYCLOPEDIA Attiwandaron 23
Attucks, Crispus (American hero)
MAIN ARTICLE volume 1 page 225, picture,
volume 1 page 226
MORE TO EXPLORE
American Revolution volume 1 page 99
auditory signal (electronics)
television volume 13 page 40
auditory tube (anatomy): see in index
eustachian tube
Augusta (state capital of Maine, U.S.)
MAIN ARTICLE volume 1 page 226, picture,
volume 1 page 226
MORE TO EXPLORE
Maine volume 8 page 22
Augusta National Golf Club (U.S. organization)
water hazard picture, volume 5 page 126
Augustus (Roman emperor)
MAIN ARTICLE volume 1 page 227
MORE TO EXPLORE
ancient Rome volume 11 page 90
Cleopatra volume 3 page 135
Aurangzeb (Mughal emperor)
Mughal Empire volume 8 page 202
auricle (anatomy of the ear)
bat’s ear picture, volume 4 page 87
ear volume 4 page 87, picture, volume 4
page 87
aurora (atmospheric phenomenon)
MAIN ARTICLE volume 1 page 227
MORE TO EXPLORE
aurora over northern Canada picture,
volume 1 page 227
solar system volume 12 page 127
sun volume 12 page 203
aurora australis (atmospheric phenomenon)
auroras volume 1 page 228
aurora borealis (atmospheric phenomenon)
auroras volume 1 page 227
Austin (state capital of Texas, U.S.)
MAIN ARTICLE volume 1 page 228
Australasia (region, Oceania)