Lecture: A History of Timekeeping
IELTS Listening PracticePart 4hard
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Questions
Questions 1–3
Early timekeeping devices
Complete the notes below. Write ONE WORD AND/OR A NUMBER for each answer.
1
The earliest known timekeeping device is the ______.(max 1 word)
2
A sundial works by casting a ______ onto a marked surface.(max 1 word)
3
A water clock could be affected by cold ______, which slowed the flow.(max 1 word)
Questions 4–6
Mechanical clocks
Complete the notes below. Write ONE WORD AND/OR A NUMBER for each answer.
4
The first mechanical clocks appeared in the ______ century.(max 1 word)
5
They were driven by falling ______.(max 1 word)
6
Many early tower clocks had no face and simply rang a ______.(max 1 word)
Questions 7–9
Greater accuracy
Complete the summary below. Write ONE WORD ONLY for each answer.
7
In 1657 Huygens built the first ______ clock, which was far more accurate.(max 1 word)
8
Sailors needed an accurate clock to calculate their ______ at sea.(max 1 word)
9
Harrison's marine chronometer used a ______ instead of a pendulum.(max 1 word)
Questions 10–11
Modern clocks
Complete the sentences below. Write ONE WORD ONLY for each answer.
10
A quartz clock keeps time using the steady ______ of a crystal.(max 1 word)
11
The most accurate clocks are ______ clocks, which count the vibrations of atoms.(max 1 word)
Question 12
Answer the question below.
Write NO MORE THAN THREE WORDS for each answer.
12
Which everyday technology relies on atomic clocks in orbit?(max 3 words)
0 / 12 answered
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