Mark Scheme (Merged) June 2025 [VERIFIED]
8463/2H
IB/G/Jun25/G4007/E11
, 2
Answer all questions in the spaces provided.
0 1 In a thunderstorm, lightning produces visible light waves and sound waves.
0 1 . 1 Describe the similarities and differences between visible light waves and sound
waves.
[6 marks]
IB/G/Jun25/8463/2H
, 3
Do not
Use the Physics Equations Sheet to answer questions 01.2 and 01.3. write
outside
the box
0 1 . Which equation links distance (s), speed (v) and time (t)? Tick ( ) one
[1 mark]
box.
speed = distance × time
distance time
speed =
time
speed =
distance
0 1 . 3 Lightning strikes the ground 13 200 m from a student. The speed of
sound in air is 330 m/s.
Calculate the time taken for the sound created by the lightning strike to reach the student.
IB/G/Jun25/8463/2H
, 4
[3 marks]
2
Time = s 10
Turn over for the next question
Do not
0 2 A student investigated how the force applied to a spring affects the length of the spring. write
outside
Figure 1 shows the apparatus used. the box
Figure 1
0 2 . What is the independent variable in this investigation?
IB/G/Jun25/8463/2H