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6. Scientists will use geodesy to explore undersea continental
shelf oil-gas fields.
7. Surveyors can use geodetic technologies to determine exactly
how much the Earth’s surface has changed.

Task 2. Make the possessive case of the noun according to the

example.

Example: the surface of the Earth – the Earth’s surface
1. The surface of the planet
2. The external gravity of the Earth
3. The body of the Earth

4. The shape of the ellipsoid
5. The position of the surface points
6. The deformation of the buildings

7. The exact shape of the equipotential surfaces

Task 3. Find the nouns in the texts formed from the following
verbs. Define the endings which form these nouns. Make 5
sentences using them.

Example: to transport – transportation
To construct, to build, to monitor, to position, to develop, to

protect, to explore, to prevent, to resist, to determine, to require, to
apply, to navigate, to consume, to measure, to attract.

Task 4. Open the brackets and use the verb in the Past Simple
Tense.

1. Pythagoras ___ (to be) a mathematician who ___ (to reason)

that the gods ___ (will) create a perfect figure and therefore the Earth
___ (to be created) to be spherical in shape.
2. Posidonius ___ (to measure) the elevation of Canopus at
Alexandria and ___ (to determine) that the angle ___ (to be) 1/48th of

circle. He ___ (to assume) the distance from Alexandria to Rhodes to
be 5000 stadia, and so he ___ (to compute) the Earth's circumference
in stadia as 48 times 5000 = 240,000

3. The Muslim scholars, who ___ (to hold) to the spherical Earth
theory, ___ (to use) it to calculate the distance and direction from any
given point on the Earth to Mecca. This ___ (to determine) the Qibla,

or Muslim direction of prayer.

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