catapult volume 3 page 59
war, prisoner of (international law): see
in index prisoner of war
War Between the States (U.S. history):
see in index American CivilWar
war crime (international law)
crime volume 3 page 216
Nuremberg trials volume 9 page 110
warfare: see in index war
Warhol, Andy (U.S. artist)
MAIN ARTICLE volume 15 page 11, picture,
volume 15 page 11
MORE TO EXPLORE
painting volume 10 page 12
warhorse (mammal)
horse volume 6 page 87
warm-bloodedness (physiology)
mammal volume 8 page 36
warning coloration (biology)
protective coloration volume 10
page 157
War of 1812 (British-U.S. history)
MAIN ARTICLE volume 15 page 12
MORE TO EXPLORE
people
Harrison volume 6 page 23
Jackson volume 7 page 5
Key volume 7 page 60
Madison volume 8 page 12
Tecumseh volume 13 page 30
“USS Constitution” warship picture,
volume 15 page 13
White House volume 15 page 42
warrigal (wild dog): see in index dingo
warrior (person)
ancient wars picture, volume 15 page 9
Papua New Guinea picture, volume 10
page 29
Spartan warrior picture, volume 12
page 160
Warsaw (capital city of Poland)
MAIN ARTICLE volume 15 page 14, picture,
volume 15 page 14
MORE TO EXPLORE
Poland volume 10 page 107
Warsaw Ghetto Uprising (Polish history)
Warsaw volume 15 page 14
Warsaw Pact (1955-91, European history)
ColdWar volume 3 page 150
NATO volume 9 page 84
warship
navy volume 9 page 26
ship volume 12 page 82
War to End AllWars (1914-18): see in
indexWorldWar I
Washington (state in the U.S.)
MAIN ARTICLE volume 15 page 15
MORE TO EXPLORE
Mount Rainier picture, volume 15
page 16
Washington, Booker T. (U.S. educator)
MAIN ARTICLE volume 15 page 17, picture,
volume 15 page 17
MORE TO EXPLORE
African Americans volume 1 page 43
Du Bois volume 4 page 80
Washington, D.C. (capital city of the
U.S.)
MAIN ARTICLE volume 15 page 18
MORE TO EXPLORE
Banneker volume 2 page 26
Maryland volume 8 page 69
United States volume 14 page 24
U.S. Capitol picture, volume 15 page 18
White House picture, volume 15 page 41
Washington, George (president of the
U.S.)
MAIN ARTICLE volume 15 page 19, picture,
volume 15 page 19
MORE TO EXPLORE
Adams volume 1 page 23
American Revolution volume 1
page 100
French and IndianWar volume 5
page 66
Hamilton volume 6 page 10
Monroe volume 8 page 171
Pulaski volume 10 page 166
Ross volume 11 page 99, picture, volume
11 page 99
timeline volume 15 page 19
278 wall BRITANNICA STUDENT ENCYCLOPEDIA
United States volume 14 page 29
Valley Forge winter camp picture, volume
1 page 101
Washington, D.C. volume 15 page 18
White House volume 15 page 41
Washington, March on (U.S. history)
picture, volume 3 page 130
civil rights movement volume 3
page 130
King volume 7 page 66
Washington and Lee University (university
in Lexington, Virginia, U.S.)
Lee volume 7 page 122
Washington Monument (inWashington,
D.C., U.S.) picture, volume 14
page 24
WashingtonWizards (U.S. basketball
team)
Jordan volume 7 page 35
wasp (insect)
MAIN ARTICLE volume 15 page 21, picture,
volume 15 page 21
waste disposal (biology): see in index
excretion
waste recycling: see in index recycling
watch (timekeeping device)
clock volume 3 page 140
water
MAIN ARTICLE volume 15 page 22
MORE TO EXPLORE
cave features picture, volume 3 page 63
chalk volume 3 page 79
cholera picture, volume 3 page 110
crystal volume 3 page 226
Earth volume 4 page 89
energy volume 4 page 137, picture, volume
4 page 139
erosion volume 4 page 152, picture, volume
4 page 152
food and nutrition volume 5 page 44
Mars volume 8 page 59
molecule picture, volume 8 page 155
natural resources picture, volume 9
page 21
physical states of water picture, volume 8
page 78
steam picture, volume 4 page 166
seed volume 12 page 63
transportation volume 13 page 92
water, ground (water below Earth’s surface):
see in index groundwater
water buffalo (mammal) picture, volume
2 page 147
buffalo volume 2 page 146
watercraft (vehicle): see in index boat;
harbor; ship
water cycle picture, volume 15 page 23
rain volume 11 page 21
water volume 15 page 23
waterfall (geology)
MAIN ARTICLE volume 15 page 24
MORE TO EXPLORE
Angel Falls picture, volume 14 page 63
Havasu Falls picture, volume 15 page 24
Iguazu Falls picture, volume 12 page 142
Niagara Falls picture, volume 9 page 58
Ozark Mountains picture, volume 1
page 180
salmon picture, volume 12 page 22
Screw Auger Falls picture, volume 1
page 151
waterfowl (birds)
duck volume 4 page 81
mandarin duck picture, volume 4
page 81
Watergate Scandal (U.S. history)
Nixon volume 9 page 75
water habitat (biology and ecology)
habitat volume 6 page 4
water hemlock (plant)
hemlock volume 6 page 38
water lily (plant and flower)
MAIN ARTICLE volume 15 page 24, picture,
volume 15 page 25
watermelon (fruit)
melon picture, volume 8 page 97
water pollution
Atlantic Ocean volume 1 page 221
Lake Erie volume 4 page 149
oil spill picture, volume 10 page 118
pollution volume 10 page 118
watershed (land drained by a river): see in
index basin
waterspout (architecture)
gargoyle volume 5 page 89
water supply: see in index aqueduct
water transportation: see in index shipping
water vapor
cloud volume 3 page 143
dew volume 4 page 42
evaporation and condensation volume 4
page 166, picture, volume 4 page 166