Question

3 Read the sentences and then choose the
correct timekeeping device (a-c).
1 This device burns fat to mark the passing of time.
a atomic clock
b candle clock
c hourglass
2 In this device, electricity is used to make a crystal
vibrate to measure time.
a quartz wristwatch
b water clock
c mechanical clock
3 This device uses a shadow on a flat surface to tell
the time.
a pendulum clock
b hourglass
c sundial
4 A long metal weight swings from side to side to
measure time.
a atomic clock
Wob candle clock
c pendulum clock
5 This device uses water filling up and emptying from
a vessel to measure time.
a water clock
b mechanical clock
c hourglass
6 This device measures time by using the
electromagnetic signals of electrons when they
change energy levels.
a quartz wristwatch
b atomic clock

Answer 1

c hourglass

a quartz wristwatch

c sundial

c pendulum clock

a water clock

b atomic clock