Latitude and longitude are imaginary lines that help locate places on Earth. Latitude is measured in degrees north and south of the equator. Longitude is measured in degrees east and west of the prime meridian. The tropics are the region between the Tropic of Cancer and the Tropic of Capricorn, which experience hot, humid climates. Tropical countries lie within these latitudes and experience wet and dry seasons. Tropical diseases are infectious illnesses prevalent in tropical regions due to the hot, humid environment.
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Latitude and Longitude
1. Mohammad Aslam Shaiekh
MPH – 3rd Batch
School of Health and Allied Sciences (SHAS)
Pokhara University (P.U)
Geography
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2. Latitude & Longitude
• Latitude and longitude are imaginary (unreal)
lines drawn on maps to easily locate places on
the Earth.
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3. Latitude
• The Equator is the line of 0° latitude, the starting
point for measuring latitude.
• The latitude of the North Pole is 90° N, and that of
the South Pole is 90° S.
• The latitude of every point in between must be some
degree north or south, from 0° to 90°.
• One degree of latitude covers about 69 miles (111
kilometers).
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4. Longitude
• Longitude is measured in degrees east or west
of the prime meridian. This means one half of
the world is measured in degrees of east
longitude up to 180°, and the other half in
degrees of west longitude up to 180°.
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7. Tropics
The tropics are the region of the Earth near to
the equator and between the Tropic of Cancer in the
northern hemisphere and the Tropic of Capricorn in
the southern hemisphere. This region is also referred
to as the tropical zone and the torrid zone.
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8. Tropical country
• Tropical countries are those lie in between
equator and tropic of cancer and tropic of
capricorn.
• Not all tropical countries have the same
climate, but they all have a limited range in
their temperatures and less climate change
over a year than is found in other zones.
• Their climate is distinguished chiefly by wet
and dry seasons.
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9. Tropical disease
• Tropical diseases are diseases that are
prevalent in or unique to tropical and
subtropical regions.
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10. • Tropical diseases encompass all diseases that
occur solely, or principally, in the tropics. In
practice, the term is often taken to refer to
infectious diseases that thrive in hot, humid
conditions, such as malaria, leishmaniasis,
schistosomiasis, onchocerciasis, lymphatic
filariasis, Chagas disease, African
trypanosomiasis, and dengue.
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