For each of the physical quantities named in the table below, choose an instrument shown in Fig. 25.35 that is used to measure that physical quantity.
Physical quantity
Volume Time Temperature
3. Final Examination 2022, Question 11
The length of the shadow cast by an object depends on the position of the Sun in the sky. Two groups of students in Ireland, group A and group B, investigated how the length of a shadow varied over a year. Group A used a pole to cast the shadow.
Sun Instrument
Pole
Shadow
(Fig. 25.36
a. Name an instrument the students could have used to measure the length of the shadow. b. State one variable the students in group A should have kept constant.
c. Group B carried out the same investigation, but instead of using a pole to create a shadow, they used a student from the group. Which group, A or B, carried out a better investigation? Justify your answer.
j Go to page 130 of your Assessment Book to answer more exam-style questions.