Page 89 - Grasp English C1+ (Workbook)

Cosmology 9

C. Read the text, then discuss D. Read the text again. Correct the sentences.
with a partner. How do these 1. Pluto maintained its planetary status for almost 100 years.
numbers relate to the text?
2. Clyde Tombaugh discovered Pluto when he was working in the UK.
a. 2
3. Astronomers used a blink compactor to analyse photos taken
b. 3 hours apart.
c. 8 4. When analysing the photos, distant stars would appear in different
d. 10 positions.
e. 75 5. Ceres was discovered after Pluto.
f. 100 6. Ceres is located in the Kuiper Belt.
g. 1930 7. The IAU stated that to be a planet, a celestial body had to meet
h. 2006 two out of three criteria.
8. New Horizons is a shuttle carrying scientists to research Pluto.

E. Write a summary of the text in approximately 50 words, including the words from exercise B. In your
summary, you should:
• explain when Pluto was discovered and why it was demoted.

• identify the three criteria for defining a planet.

F. Work with a partner. Take a few minutes to prepare your ideas.

Student A Student B

You are an astronomer and think the You are a healthcare professional and think
government should continue spending on the government should cut funding on space
space exploration. exploration.

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