P-waves and S-waves are seismic (earthquake) waves. The table has six statements about P-waves and S-waves. Put a tick (✓) in the box next to the three correct statements. | statement | (✓) | |---------------------------------------------|-----| | P-waves are transverse waves | | | S-waves are transverse waves | | | P-waves travel faster than S-waves in the Earth’s crust | | | S-waves travel faster than P-waves in the Earth’s crust | | | P-waves can travel through the liquid core of the Earth | | | S-waves can travel through the liquid core of the Earth | | (b) Complete the sentence by putting a cross (X) in the box next to your answer. The frequency of ultrasound is A more than 20000 Hz B between 2000 Hz and 20000 Hz C between 20 Hz and 2000 Hz D less than 20 Hz

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P-waves and S-waves are seismic (earthquake) waves - Edexcel - GCSE Physics - Question 6 - 2018 - Paper 1

Question 6

P-waves and S-waves are seismic (earthquake) waves. The table has six statements about P-waves and S-waves. Put a tick (✓) in the box next to the three correct state... show full transcript

Worked Solution & Example Answer:P-waves and S-waves are seismic (earthquake) waves - Edexcel - GCSE Physics - Question 6 - 2018 - Paper 1

Step 1

P-waves are transverse waves

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Answer

This statement is false. P-waves (Primary waves) are longitudinal waves, meaning they compress and expand in the same direction as the wave travels.

Step 2

S-waves are transverse waves

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Answer

This statement is true. S-waves (Secondary waves) are transverse waves that move perpendicular to the direction of wave travel.

Step 3

P-waves travel faster than S-waves in the Earth’s crust

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Answer

This statement is true. P-waves travel faster than S-waves, making them the first waves detected by seismographs.

Step 4

P-waves can travel through the liquid core of the Earth

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Answer

This statement is true. P-waves can travel through both solid and liquid, which is why they can travel through the Earth’s liquid outer core.

Step 5

S-waves can travel through the liquid core of the Earth

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Answer

This statement is false. S-waves cannot travel through liquids, which is why they do not pass through the Earth’s liquid outer core.

Step 6

The frequency of ultrasound is

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Answer

A. more than 20000 Hz. Ultrasound is defined as sound waves with frequencies above 20,000 Hz.

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P-waves and S-waves are seismic (earthquake) waves - Edexcel - GCSE Physics - Question 6 - 2018 - Paper 1

Worked Solution & Example Answer:P-waves and S-waves are seismic (earthquake) waves - Edexcel - GCSE Physics - Question 6 - 2018 - Paper 1

P-waves are transverse waves

S-waves are transverse waves

P-waves travel faster than S-waves in the Earth’s crust

P-waves can travel through the liquid core of the Earth

S-waves can travel through the liquid core of the Earth

The frequency of ultrasound is

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