It Takes Science

Greg would like to provide a more effective controlling idea for his paper. Which sentence should replace sentence 8 to effectively state the controlling idea of this paper?

• Quite a bit of knowledge is needed to figure out how the best roller coasters work.

• Hard work, science, and having lots of other skills are needed to design popular roller coasters.

• Roller coasters have to be fun, so the scientists who design and build them must know something about amusement parks.

• Designing an exciting roller-coaster ride involves imagination and creativity, but it also requires using science.

Greg would like to use a more appropriate word in sentence 14. Which word should replace lower in this sentence?

• depart

• extend

• descend

• increase

Which sentence in the third paragraph (sentences 16–23) is extraneous and should be deleted?

• Sentence 16

• Sentence 18

• Sentence 19

• Sentence 20

Greg would like to provide a more effective closing in the fourth paragraph (sentences 24–30). Which sentence should replace sentence 30 to accomplish this goal?

• Visitors to amusement parks should ride only steel roller coasters.

• Wooden roller coasters are fun to ride, but they need to have better features.

• Designers should stop making wooden roller coasters since riders dislike them.

• By using steel, designers can create rides full of drops, twists, and loops.

Greg would like to add the following detail to the fifth paragraph (sentences 31–36).

Paint buildup causes resistance on the wheels of a roller coaster as they roll over the track.

Where is the MOST effective place to add this sentence?

• After sentence 31

• After sentence 32

• After sentence 33

• After sentence 36

Sentence 40 includes repeated information. Which revision MOST improves sentence 40?

• Designers aim to set new records with each new roller coaster they design.

• Designers have an objective to set new records that they aim for when designing each new roller coaster.

• Designers set new records to aim for them with each new roller-coaster design.

• Designers aim to set new records because that is their objective with each new roller-coaster design.