A Screamingly Good Science Lesson
Elizabeth Kibler
1Amusement park rides give us thrills, exhilaration, and delight. If you pay attention, these rides can give you something else—a science lesson. Roller coasters are amazing rides that can twist and veer until you scream; however, these rides can also help to show us how types of energy work.
2Think about the first part of a roller coaster ride: A machine slowly pulls the cart higher and higher on a hill on the track. As the cart gets higher, it gains potential energy. Objects gain potential energy by being lifted farther from the ground. Potential energy is stored energy. The higher an object is from the ground, the more potential energy it has.
3When the cart reaches the top of the first hill, not only are riders’ stomachs screaming for mercy, but also the cart is at its maximum potential energy. Without warning, the energy-loaded cart begins to descend the first hill. As the cart careens down the hill, it has kinetic energy. Kinetic energy is different from potential energy. Kinetic energy is the energy of motion. All objects in motion have this energy. The kinetic energy propels that cart down the hill. Eventually, the cart will fight the forces of gravity and travel up another hill. On this uphill journey, the cart again begins to gain potential energy. The cart switched from potential energy, to kinetic energy, and back again. Therefore, a roller coaster ride is just the converting of kinetic energy and potential energy.
4After the first collection of potential energy, the cart does not use ropes, pulleys, or an engine. The cart, its wheels, and the laws of science are the only things that keep carts rolling firmly down the track. The air brakes on modern roller coasters bring the cart to a safe and smooth stop. If, however, a roller coaster had no brakes, it would ultimately stop on its own. The friction between the wheels and track and the friction between the cart and the air would eventually make a coaster stop. Think about a super ball. Although it gains potential energy every time it goes up, it eventually stops bouncing. In much the same way, the roller coaster cart would cease to move.
5Today, amusement park owners continuously try to outdo each other with bigger and better coasters. They believe that the more screaming their patrons do, the better the ride. Although the new rides of the day are going beyond what many thought was possible, it is all a matter of science. So, the next time you find yourself about to plunge down a gigantic roller coaster hill, try to think about the science of the amazing ride. Or, if you can’t stomach that much thought, just hold on and enjoy the ride.
I chose d and a.
5)
Why did the author MOST LIKELY write this passage?
A) to explain science in an exciting way
B) to describe the fun of roller coasters
C) to relate a humorous story about rides
D) to show the safety of modern coasters
6)
The author's point of view can BEST be described as that of
A) a bored teacher.
B) an unsure guide.
C) a nervous novice.
D) an enthusiastic fan.
Whats the answer??
b,d?
No, the correct answers based on the passage are:
5) A) to explain science in an exciting way
6) D) an enthusiastic fan
To answer question 5 and question 6, we need to analyze the passage and look for evidence in the text.
Question 5 asks why the author likely wrote this passage. To find the answer, we can look for the author's purpose in the text. In paragraph 1, the author mentions that roller coasters can give us a science lesson. In paragraph 3, the author explains the concept of potential and kinetic energy in relation to roller coasters. And in paragraph 4, the author talks about how roller coasters rely on the laws of science to stay in motion.
Based on this information, we can infer that the author most likely wrote this passage to explain science in an exciting way. Therefore, the correct answer is A) to explain science in an exciting way.
Question 6 asks for the author's point of view. To find the answer, we can look at the tone and language used throughout the passage. The author uses words like "amazing," "delight," and "screamingly good" to describe roller coasters. The author also mentions that amusement park owners try to outdo each other with bigger and better coasters, indicating enthusiasm.
Based on this evidence, we can conclude that the author's point of view can be best described as that of an enthusiastic fan. Therefore, the correct answer is D) an enthusiastic fan.