CAMBRIDGE ENGLISH / ADVANCED / CAE / USE OF ENGLISH / word formation

For questions 1- 8, read the text below. Use the word given in capitals at the end of some of the lines to form a word that fits in the gap in the same line.

Speed of Light

 

The speed of light is often noted as 186,000 miles per second, but the most accurate and modern accepted measurement puts it at 299,792,458 km per second, which is (1) ... more than 186,000 miles per second. The first measurements within one percent of the finally agreed-on figure were made during the Age of (2) … Revolution. Before the 1600s, scientists assumed that light travelled in an instant, supported by a number of (3) … observations. The fact that Earth's shadow passes over the Moon during a lunar eclipse with no (4) ... lag time between the calculated passage of the Moon out of the shadow and the moment of our perceiving the passage suggested that light travelled the immense distance from the Moon to Earth (5) ... . However Galileo Galilei (1564-1642) suggested that perhaps the speed was finite but simply too fast to measure by that method or with (6) … instruments. He was right, and his (7) ... might be regarded as the discovery that light had a speed that could be measured. The discovery of precise measurement of the speed resulted from improvements in technique and (8) ... .

[start-answers-block type=1 columns=2 textTransform=none]

[answer="SLIGHTLY" label="SLIGHT"]

[answer="SCIENTIFIC" label="SCIENCE"]

[answer="ASTRONOMICAL" label="ASTRONOMY"]

[answer="APPARENT" label="APPEAR"]

[answer="INSTANTANEOUSLY" label="INSTANT"]

[answer="CONTEMPORARY" label="CONTEMPORIZE"]

[answer="INSIGHT" label="SIGHT"]

[answer="EQUIPMENT" label="EQUIP"]

[end-answers-block]

 

 

 

 

 

 

ANSWER KEYS

 

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