While researching a topic, a student has taken the following notes: • Earthquakes start at a point called a “focus” and spread out from there as seismic waves. • The two types of seismic waves that travel beneath Earth’s surface are primary waves (P waves) and secondary waves (S waves). • P waves travel more quickly beneath Earth’s surface than do S waves. • P waves compress and expand the ground, causing it to move backward and forward. • S waves cause the ground to move from side to side. The student wants to emphasize a similarity between P waves and S waves. Which choice most effectively uses relevant information from the notes to accomplish this goal?
","rationale_html":"Choice A is the best answer. The sentence emphasizes a similarity between P waves and S waves, noting that they both travel beneath Earth’s surface, thereby causing the ground to move. Choice B is incorrect. The sentence emphasizes a difference between P waves and S waves, noting that P waves travel faster than S waves; it doesn’t emphasize a similarity between the two types of waves. Choice C is incorrect. The sentence emphasizes how P waves move; it doesn’t emphasize a similarity between P waves and S waves. Choice D is incorrect. While the sentence acknowledges that P waves and S waves start at the same point, it doesn’t emphasize a similarity; instead, the sentence emphasizes a difference between the two types of waves, noting that they behave very differently. 33 SAT PRACTICE TEST #5 ANSWER EXPLANATIONS
","correct_answer":["A"],"has_media":false,"has_mathml":false,"has_table":false,"source_created_at":null,"source_updated_at":null,"options":[{"label":"A","content_html":"P waves and S waves both travel beneath Earth’s surface, causing the ground to move.
","ord":0},{"label":"B","content_html":"P waves travel away from an earthquake’s starting point at a higher rate of speed than do S waves.
","ord":1},{"label":"C","content_html":"Spreading out from the focus of an earthquake, P waves move the ground backward and forward.
","ord":2},{"label":"D","content_html":"Although P waves and S waves start at the same point, they behave very differently.
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