根据“Light comes from the sun. It also comes from flashlights, candles and streetlights.”可知光来自太阳、手电筒、蜡烛和街灯。故选B。2.细节理解题。根据“Sound is made when something vibrates”可知声音是通过振动产生。故选A。3.主旨大意题。根据“Light, heat and sound are forms of energy. ...
Energy makessthingsEnergyhappen. Heat, light and soundare all forms(形式)ofKineticenergy, and there are manyothers too. The different typesof energy can be divided upinto two groups: kinetic and potential energy.Potential energy(势能) is energy that is stored, ready to use.Anything that could...
Light comes from the sun.It also comes from flashlights,candles and streetlights.Light is important because it lets us see things.It can pass through clear objects,such as clear glass or clear plastic.But it cannot pass through objects that are not clear.Sunglasses will ...
More Commonly Misspelled Words Popular in Wordplay See All More Words with Remarkable Origins 8 Words for Lesser-Known Musical Instruments Birds Say the Darndest Things 10 Scrabble Words Without Any Vowels 12 More Bird Names that Sound Like Insults (and Sometimes Are) ...
Traditional Manuscript: Light, Heat, Sound, Energy (Week 29)
课本原文There are many kinds ofenergy(能),including light,heat,electricity, and sound. One kind ofenergy can also change into another.Solar energyHeat from the sun warms the air,land, and sea. Plants use the energy in sun-light to make their own food. We can usesolar panels to change...
Types of Heat Energy Transfer Lesson Summary Frequently Asked Questions What are examples of heat energy at home? Heat energy and its uses are fairly evident at home. Cooking requires heat from the stove or other heat sources. It involves all three methods of heat transfer (conduction, convect...
Electricity produces light, heat, and sound energy. ___ addition, electric power operates many kinds of equipment, tools, and machines, which make work easier. A. To B. By C. In D. On 相关知识点: 试题来源: 解析 A 反馈 收藏
还没人写过短评呢 我要写书评 Nature's Miracles Volume 2; Energy and Vibration Energy, Sound, Heat, Light, Explosives. 1900的书评 ··· ( 全部0 条 ) 论坛 ··· 在这本书的论坛里发言 + 加入购书单 谁读这本书? ··· 二手市场 ··· 在豆瓣转让 手里有一本闲着? 订阅关于Na...
Ch 22. Nuclear Energy Fundamentals Ch 23. Planning a Scientific Investigation Or... Ch 24. Plant & Soil Ecology Ch 25. Populations & Relationships in... Ch 26. Sound & Light Waves Ch 27. Studying Biological Communities Ch 28. The Periodic Table, Atoms &... Ch 29. Using Data for Inve...