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PRACTICE EXAM
42. What is the biggest contribution of Edmond
41. - 43. soruları aşağıdaki parçaya göre Halley to science?
cevaplayınız.
A) He gave the biggest comet he observed his
Several hundreds of comets were discovered name.
during the past few decades with the aid of
improved astronomical instruments. However, B) He lived in the difficult situations concerning
studies began centuries ago. In the 17th century, science but he made a lot of discoveries in
British scientist Isaac Newton demonstrated that the 18th century.
the movements of comets are subject to the C) He is the most famous astronomer.
same laws that control the planets in their orbits.
By comparing the orbital elements of a number of D) He improved some astronomical instruments
earlier comets, British astronomer Edmond Halley by himself
showed the comet of 1682 to be identical with the E) He calculated the appearance of Halley’s
two that had appeared in 1607 and 1531, and he Comet from the Earth accurately.
successfully predicted the comet’s next return,
which occurred in 1758. The earlier appearances
of what came to be known as Halley’s Comet
have been identified from records dating from as
early as 240 BC. Halley’s Comet most recently
passed around the Sun again early in 1986.
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41. It is pointed out in the passage that Isaac 43. In what way did the advanced astronomical
Newton ----. instruments help humanity?
A) identified several hundreds of comets A) Hundreds of comets were discovered during
B) discovered the orbits of the planets in our the past few decades.
solar system B) Halley’s Comet was first observed in 1986.
C) observed the movements of comets C) We know when Halley’s Comet will appear
D) developed an improved telescope next.
D) We learned that the movements of comets
E) explained that Halley’s Comet was first are subject to the same laws that control the
observed in 240 BC planets in their orbits.
E) The movements of comets coul be
demonstrated.
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