Page 76 - Geography for Secondary Schools Student’s Book Form One

Geography for Secondary Schools
Student’s Book Form One
Glossary

Altitude Height of a point above the mean sea level measured vertically

FOR ONLINE READING ONLY
Anemometer Instrument for measuring wind speed
Aphelion Point in the orbit of a planet, asteroid, or comet which is the
furthest from the sun
Atmosphere Layer of gases surrounding the earth or another planet

Atmospheric Pressure exerted by the weight of the atmosphere, which at
pressure sea level, has a mean value of 760 mmHg

Autumn Season of the year, which comes after summer, when leaves
fall from trees. In the northern hemisphere it occurs from
September to November, and in the southern hemisphere from
March to May

Axis Imaginary line about which a body rotates

Cartography Science or practice of drawing maps

Centrifugal force Force that directs a body away from the center around which
the body is moving

Centripetal force Force that directs a body towards the center around which the
body is moving

Circumnavigation Sailing all the way around the world
Environment Surroundings or conditions in which living organisms operate

Equator Zero (0 ) latitude, dividing the earth into two equal halves
°
Equinox Day and night of equal length

Galaxy Massive collection of stars and interstellar matter isolated in
space which are held together by gravitational attraction

Gravitational Force that pulls heavenly bodies towards each other or
force towards the source body

Great circle Circle on the surface of a sphere that lies in a plane passing
through the sphere’s centre

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