首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
What is the major source of evaporation of water from the oceans and lakes?
What is the major source of evaporation of water from the oceans and lakes?
admin
2010-08-07
11
问题
What is the major source of evaporation of water from the oceans and lakes?
We experience different forms of the Sun’s energy every day. We can see its light and feel its warmth. The Sun is the major source of evaporation of water from the oceans and lakes. Sunlight also provides the energy used by green plants to make their own food. These green plants then provide food for all organisms on the Earth.
Much of the energy that comes from the Sun never reaches the Earth’s surface. It is either reflected or absorbed by the gases in the upper atmosphere. Of the energy that reaches the lower atmosphere, 30% is reflected by clouds or the Earth’s surface. The remaining 70% warms the surface of the planet, causes water to evaporate, and provides energy for the water cycle and weather. Only a tiny part, approximately 0.023%, is actually used by green plants to produce food.
Many gases found in the atmosphere actually reflect heat energy escaping from the Earth’s surface back to the Earth. These gases act like the glass of a greenhouse in that they allow energy from the Sun to enter but prevent energy from leaving. They are therefore called greenhouse gases.
When sunlight strikes an object, some of the energy is absorbed and some is reflected. The amount reflected depends on the surface. For example, you’ve probably noticed how bright snow is when sunlight falls on it. Snow reflects most of the energy from the Sun, so it contributes to the low temperatures of winter. Dark-colored surfaces, such as dark soil or forest, absorb more energy and help warm the surrounding air.
选项
A、They allow energy from the sun to enter but prevent energy from leaving.
B、They allow energy from the sun to leave but prevent energy from entering.
C、They protect the plants.
D、They protect the earth.
答案
A
解析
细节题。根据回答“…but prevent energy from leaving.”可知本题答案为A。
转载请注明原文地址:https://jikaoti.com/ti/mvasFFFM
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
5
Whyare"Clovispeople"believedtofirstenterNorthAmerica?
Theexpression"stepbackintimeatleastahundredyears"(Para.2)isintendedtoconveytheideathatThegreatestadvantag
ThreedevelopmentsintheUnitedStateshighereducationstartedmorethanacenturyagofollowingthe______.
ThreedevelopmentsintheUnitedStateshighereducationstartedmorethanacenturyagofollowingthe______.
【B1】Thelegalquestionaboutwhetherandtowhatextentitisappropriatetoauditandmonitorcompanycomputersystemsisnoty
Mostpublishingisnow"electronic"inthesensethatbooks,magazinesandnewspapersarepreparedoncomputers,andexistasco
Whatisthemainpurposeofthespeaker?
Iwasafraid.Thetruthis,IwasafraidthedayIwalkedintoStanford.AndIwasafraidthedayIwalkedout.【61】Iwas
Whenthevotewasfinallytaken,itwas3:45inthemorning,Aftersixmonthsofarguingandthefinal16hoursofhotparliamen
随机试题
以下ACS高危程度分类,正确的是()
男性,30岁。头痛,时有呕吐,逐渐加重1个月,近期嗜睡,反应迟钝,时有头晕、猝倒,无头部外伤及急性炎症病史,血压正常。检查见视神经盘水肿,血常规、红细胞沉降率正常。根据以上的初步诊断,其首选的辅助检查应是
个人外汇账户按账户性质可分为()。
企业将自用房地产转为以公允价值模式计量的投资性房地产。下列关于转换日该房地产公允价值大于账面价值的差额的会计处理表述中,正确的是()。
儿童语言教育的活动观点以与心理学有关的理论,主要是以()的理论作为主要依据。
以往认为最适合哲学的领域,如今已被对人类存在的各方面经验作出成功解释的科学所占领。在一个信息技术取得支配地位的世界上,哲学似乎已败下阵来。它至少不能把智慧切成一个个可以测量的小块提供给人们。在20世纪,有无数哲学家讥讽自己从事的学科,认为哲学活动在经历了三
课程设计
∫0π=________.
设y=,求y’.
ReadthearticlebelowaboutToyLearn,astart-upcompanydevelopingeducationaltoolsforchildren.Foreachquestion(31-40
最新回复
(
0
)