IN THE FUTURE, MAYBE ALL CARS THAT RUN ON PETROL WILL BE REPLACED BY SOLAR CARS, WHICH HAVE BEEN AROUND FOR AWHILE, BUT WITH RECENT DEVELOPMENTS IN SOLAR CAR DESIGN AND THE MEASUREMENT OF PHOTOVOLTAIC CELLS BECOMINGSMALLER, THE DREAM OF A TRULY EFFICIENT...

Exercise 15:In the future, maybe all cars that run on petrol will be replaced by solar cars, which have been around for awhile, but with recent developments in solar car design and the measurement of photovoltaic cells becomingsmaller, the dream of a truly efficient solar car is more reality than fantasy. A solar car is a vehicle powered byphotovoltaic cells, also called solar cells, which convert sunlight (light energy) into electrical energy. As a sourceof energy on earth, there is nothing like the sun: in a mere one thousandth of one second (.001), the sun emitsenough energy to fulfill our planet's energy needs for the next 5,000 years. It is a staggering fact, and an excitingone. Since the energy from the sun is responsible for renewable resources such as wind, tides, and heat, solarenergy seems to offer the brightest future for not only cars, but for the entire energy crisis. Despite the appearancethat solar energy may be the least feasible among the current crop of alternative fuel propositions, new solarpowered devices and more specifically solar powered cars are beginning to be developed. How do Solar. Carswork?The photo-voltaic cells absorb photons from sunlight. This action generates heat, which the cells then convertinto electrical energy and stores in an on-board battery. This process of conversion is called the photovoltaic effect.Not surprisingly, such a vehicle has zero emissions, and is very environmentally friendly. Unfortunately, at themoment photovoltaic cells are extremely inefficient, yet as time progresses the efficiency of these cells will grow.This will make solar energy and solar cars the fuel and car of the future-a closer reality.1. According to the text, _______.A. up to now, we have designed some solar cars B. solar cars have been very .popular for many yearsC. we have not produced any solar cars yet D. solar cars are not as much appreciated as other kinds of car2. A solar car is supplied power from _______.A. gas B. petrol C. photovoltaic cells D. electricity3. Which can not help us to solve the problem of energy crisis?A. wind B. tide C. the sun D. heat from the moon4. According to the text, _______A. no powered solar devices have been developed so farB. besides solar car, we have also developed solar powered deviceC. solar energy plans are more feasible than wind energy plansD. tide can supply more energy than the sun5. The photovoltaic effect is _______.A. the process of operating a solar car B. the process of absorbing photons from the sunC. the developing of solar cars and solar powered devicesD. the converting of heat from the sun into electricity