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Lecture 1

ECON1101 Lecture 1: econ1101Exam

Department
Economics
Course Code
ECON1101
Professor
UNSW Economic
Lecture
1

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Maths Quest A Year 11 for Queensland Chapter 6 Earth geometry WorkSHEET 6.1 1
WorkSHEET 6.1 Earth geometry Name: ___________________________
Use the world map above for the following questions, where necessary.
1
Draw a sphere to represent the shape of the
Earth. Mark in:
(a) the prime meridian
(b) the equator
Indicate whether latitude or longitude (in
degrees).
2
Indicate whether the following lines of
latitude/longitude lie on great circles or small
circles.
(a) 15ºN
(b) 15ºE
(c) 15ºW
(d) 15ºS
(e) 0ºS
(a) small circle
(b) great circle
(c) great circle
(d) small circle
(e) great circle
3
A sphere has a radius of 20 cm. Calculate the
length of the great circle on its surface.
A great circle is the largest circle on the surface
of the sphere. It is the circumference of the
circle with radius ‘r’.
cm 125.66 circlegreat oflength
cm 202
2
=
=
=
rC
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