Specification
Point Necessary Understanding
1.1 Know the Earth’s shape is an oblate spheroid
1.2 Know and utilise the mean diameter of the Earth (13,000km)
1.3 Understand the Earth’s major internal divisions and their features
1.4 Use the latitude and longitude co-ordinate system
1.5 Use the major divisions of the Earth’s surface as astronomical reference points
1.6 Understand the effect of Earth’s atmosphere on astronomical observations
, Know the Earth’s shape is an oblate
1.1 spheroid
1.2 Know and utilise the mean diameter of the Earth
(13,000km)
[1]
Earth’s mean diameter = 13,000k
“Oblate Spheroid” = sphere squashed from the top
Value varies depending on which diamete
Descriptive Feature: Using basic geometry, area calculations ar
the circumference around the poles <
circumference around the equator