page 163
robot
MAIN ARTICLE volume 11 page 74, picture,
volume 11 page 74
MORE TO EXPLORE
Mars robot Opportunity picture, volume
12 page 152
technology and invention volume 13
page 28
rock (geology)
MAIN ARTICLE volume 11 page 75
218 Ringling Bros. and Barnum & Bailey Circus BRITANNICA STUDENT ENCYCLOPEDIA
MORE TO EXPLORE
soil volume 12 page 124
rock (music): see in index rock music
rock and roll (music): see in index rock
music
Rock and Roll Hall of Fame (museum
in Cleveland, Ohio, U.S.) picture, volume
9 page 126
rock bass (fish)
bass volume 2 page 37
rock carving: see in index petroglyph
rock cycle (geology)
rock volume 11 page 76
rock elm (tree)
elm volume 4 page 128
rocket (jet-propulsion device)
MAIN ARTICLE volume 11 page 76, picture,
volume 11 page 77
“Rocket” (steam locomotive) picture,
volume 11 page 21
rockfall (geology)
landslide volume 7 page 104
Rockies, The (mountain range in North
America): see in index Rocky Mountains
rock moss (plant): see in index granite
moss
rock music
MAIN ARTICLE volume 11 page 77, picture,
volume 11 page 78
MORE TO EXPLORE
popular music volume 10 page 128
Presley volume 10 page 146
Rock of Monaco (area in Monaco)
Monaco volume 8 page 158
Rocky Mountains (mountain range in
North America)
MAIN ARTICLE volume 11 page 78, picture,
volume 11 page 79
MORE TO EXPLORE
Canada
Alberta volume 1 page 69
Banff National Park picture, volume 3
page 23
North America volume 9 page 79
United States volume 14 page 24
Colorado volume 3 page 157
Idaho volume 6 page 111
Bitterroot Mountains picture, volume
6 page 112
Wyoming volume 15 page 79
Rocky Mountain spotted fever (disease)
American dog ticks picture, volume 13
page 63
rococo (artistic style)
painting volume 10 page 10
rod (retinal cell)
eye volume 4 page 176
rodent (mammal)
MAIN ARTICLE volume 11 page 80
MORE TO EXPLORE
capybara picture, volume 11 page 80
rodeo (sport)
cowboys picture, volume 15 page 80
horse volume 6 page 87
Rodgers, Jimmie (U.S. singer)
country music volume 3 page 208
Rodin, Auguste (French sculptor)
sculpture volume 12 page 57
Rodney, Caesar (U.S. statesman)
Delaware volume 4 page 31
roe (fish eggs)
egg volume 4 page 108
Roentgen ray (radiation beam): see in
index X-ray
Rogers, Mount (mountain in Virginia,
U.S.)
Virginia volume 14 page 94
Rolfe, John (British colonial official)
Jamestown volume 7 page 11
Pocahontas volume 10 page 104
rolled oats
oats volume 9 page 115
Rollerblading (recreation): see in index
in-line skating
roller skating (sport)
MAIN ARTICLE volume 11 page 80
MORE TO EXPLORE
in-line skating picture, volume 11
page 81
skating volume 12 page 94
Rom (people)
MAIN ARTICLE volume 11 page 81, picture,
volume 11 page 81
MORE TO EXPLORE
flamenco dancer picture, volume 12
page 154
nomad volume 9 page 77
Roma (capital city of Italy): see in index
Rome
romaine lettuce (vegetable)
lettuce volume 7 page 135
Roman alphabet: see in index Latin
alphabet
Roman Catholic Church (Christianity):
see in index Roman Catholicism
Roman Catholicism (Christianity)
MAIN ARTICLE volume 11 page 82
MORE TO EXPLORE
architecture volume 1 page 170
images
African church picture, volume 15
page 85
church altar picture, volume 3
page 112
Colombian church picture, volume 3
page 153
Polish monastery picture, volume 10
page 108
beliefs and practices
Bible volume 2 page 67
Mass picture, volume 11 page 82
pope volume 10 page 125
saint volume 12 page 9
Central America volume 3 page 75
Christianity volume 3 page 112
Europe volume 4 page 162
history
Elizabeth I volume 4 page 125
Enlightenment volume 4 page 142
Holy Roman Empire volume 6
page 74
Inquisition volume 6 page 137, picture,
volume 6 page 137
Galileo volume 5 page 82
refugee volume 11 page 40
Ireland volume 6 page 154
Northern Ireland volume 9 page 90
Protestantism
Huguenots volume 6 page 92
Reformation volume 11 page 38
Henry VIII volume 6 page 39
Luther volume 7 page 186
United Kingdom picture, volume 14
page 18
Latin America volume 7 page 113
North America volume 9 page 81
BRITANNICA STUDENT ENCYCLOPEDIA Roman Catholicism 219
Maryland volume 8 page 69
South African worshippers picture, volume
11 page 83
Romance languages
ancient Rome volume 11 page 89
Europe volume 4 page 162
language volume 7 page 105
Roman CivilWar (ancient Roman history)
ancient Rome volume 11 page 90
Roman Empire (ancient state, 27
BC-476 AD): see in index Rome,
ancient
Romanesque art (artistic period and
style)
architecture volume 1 page 170
Roman Forum (forum in Rome, Italy)
Rome volume 11 page 87
Romania (country in Europe)
MAIN ARTICLE volume 11 page 84, picture,
volume 11 page 84
MORE TO EXPLORE
folk festival picture, volume 11 page 85
geography
Bucharest picture, volume 2 page 140
castle picture, volume 11 page 85
Moldova volume 8 page 154
Chisinau volume 3 page 107
Roman numeral
MAIN ARTICLE volume 11 page 86
MORE TO EXPLORE
clock picture, volume 11 page 86
numbers and number systems volume 9
page 107
Romanov dynasty (Russian dynasty)
Russia volume 11 page 106
Roman Republic and Empire (ancient
state in Europe, Africa, and Asia): see in
index Rome, ancient
romanticism (artistic style)
painting volume 10 page 10
Romany language
Rom volume 11 page 82
Rome (capital city of Italy)