2 (a) Which row of the table is correct for a seismic S-wave?
Put a cross (✗) in the box next to your answer - Edexcel - GCSE Physics - Question 2 - 2017 - Paper 1
Question 2
2 (a) Which row of the table is correct for a seismic S-wave?
Put a cross (✗) in the box next to your answer.
electromagnetic transverse
A nno
B yes
C yes
... show full transcript
Worked Solution & Example Answer:2 (a) Which row of the table is correct for a seismic S-wave?
Put a cross (✗) in the box next to your answer - Edexcel - GCSE Physics - Question 2 - 2017 - Paper 1
Step 1
Which row of the table is correct for a seismic S-wave?
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Answer
The correct row for a seismic S-wave is B, which correctly states that S-waves are not electromagnetic and are transverse.
Thus, you should place a cross (✗) in the box next to B.
Step 2
Complete the sentence by putting a cross (✗) in the box next to your answer.
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Answer
Earthquakes occur between a plate in the crust and a second plate A in the crust. Therefore, place a cross (✗) in the box next to A.
Step 3
Explain why this is not enough to locate exactly the position of an earthquake.
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Answer
The diagram shows two circles that indicate the distances of an earthquake from each monitoring station. However, this information alone is insufficient because:
The circles intersect at two points, meaning the earthquake could be at either point, thus creating ambiguity in the actual location.
Precise location of an earthquake requires data from at least three monitoring stations, which allows for triangulation— narrowing down the location to a single point where the circles intersect.
