Physics Worksheet - Maria Regina Boy'S Secondary College (Page 3 of 9) in pdf

Physics Worksheet - Maria Regina Boy'S Secondary College Page 3

e) Underline the correct answer:

(i) If the block of candle wax is placed in water, it would (sink, float) because its

density is (smaller, greater) than that of water.

[2]

(ii) A smaller block of candle wax would have (the same, a different) density.

[1]

3. This question is about stretching springs.

After Aaron loads a spring with a weight of 2N, its length increases from 25 cm to 37 cm.

2 N

a) The change in the length of the spring is called _____________________.

[1]

b) The change in length = ________ cm

[1]

c) When the weight is removed, the spring becomes once again 25 cm long. This

means that the _________________________________ of the spring was not

exceeded.

[1]

d) Aaron hangs his mobile phone instead of the 2 N weight. He notices that

the spring becomes 34 cm long.

(i) Does the mobile phone weigh more or less than 2 N?

_______________________________________________________________ [1]

(ii) Calculate the weight of the mobile phone.

_______________________________________________________________

_______________________________________________________________ [2]

e) Name two precautions that Aaron needs to take so that he gets an accurate result.

_______________________________________________________________

_______________________________________________________________ [2]

Page 3 of 9

Physics Half yearly exam 2014 – Track 2 - Form 3

Physics Worksheet - Maria Regina Boy'S Secondary College Page 3