第一篇:2013長江寒假作業(yè)九年級語文答案6
2013長江寒假作業(yè)九年級語文答案61、略
2、外貌描寫動作描寫心理活動描寫環(huán)境描寫
3、B4、5題略
6、;A勇氣是強心劑,讓精神萎靡的人煥發(fā)活力;勇氣是激流,徘徊猶豫的人勇往直前。
7、略
8、鏡中看半夜月色朦朧,河灘猶如浸染了一層潔白的乳汁。河里的鯉魚也沒有入睡,跳到河灘上欣賞著自然的美景呢!
9、(1)亞軍很沮喪,從此一蹶不振。季軍很高興:只要我下次再加把勁,一定會登上冠軍寶座。他最終如愿以償!
(2)成長是一個不斷進步的過程,成長不拒絕失敗。
10、句是方向的向字少了左邊一豎,故向左一走就通了。
11、馬旁求主,駐馬還須問主人。
第二篇:2013長江寒假作業(yè)九年級語文答案3
《長江寒假作業(yè)》 九年級 語文 答案
三
1、理至易明:道理極容易明白。
強聒不舍:嘮嘮叨叨說個沒完。
2、梁啟超孔子曾國藩
3、A4、D5、yǔnruìjiùlínglíkè
6、①但②既然就
7、綠水前野鴨戲波
8、(1)D(2)浩蕩白日天涯
(3)由抒發(fā)離別之情轉(zhuǎn)入抒發(fā)報國之志。以落花為喻,表明自己的心志,在形象的比喻中,自然而然地融入議論。(4)陸游的詞“零落成泥碾作塵,只有香如故。周敦頤的“予獨愛蓮之出淤泥而不染,濯清漣而不妖?!?/p>
9、(1)清明節(jié)活動主題:感恩念祖,郊游踏青
端午節(jié)活動主題:弘揚傳統(tǒng)文化,激發(fā)愛國情懷
(2)歌詞內(nèi)容非常符合愛國主題,而且通俗易懂,同學(xué)們都熟悉。
(3)神州大地繁花似錦,祖國長空樂曲如潮。在這美好日子里,我們最真誠地祝福我們的祖國繁榮昌盛!我們的人民幸福安康!
(4).但愿人長久,千里共嬋娟(蘇軾)
10、枉口拔舌貧嘴薄舌巧言活舌張口結(jié)舌笨嘴拙舌鸚鵡學(xué)舌
11、堂前懸鏡,大人明察秋毫。
第三篇:2013長江寒假作業(yè)九年級語文答案7
2013長江寒假作業(yè)九年級語文答案71、略2、2、舉例論證引用論證引用論證
3、C4、略
5、C6、略
7、C8、活動一城市的文明程度越來越高:社區(qū)便民配套設(shè)施逐年增加;人們的不文明行為逐年減少。
活動二日常行為文明歌正面鏡
活動三某某先生,為了您和他人的健康,請不要在公共場合吸煙。
9、開水瓶書電視
第四篇:九年級英語長江寒假作業(yè)答案
九年級英語長江寒假作業(yè)答案
第一部分聽力(30分)
I.聽句子,從A、B、C三個選項中,選擇最佳應(yīng)答語,并在答題卡上將該項 涂黑。每個句子聽兩遍。(每小題1分,共5分)
1.A.Fine, thanks.B.See you.C.Good morning.2.A.On Sunday.B.At 8 :00 a.m.C.In July, 1989.3.A.Yes, I am.B.Yes, I can.C.Yes, please.4.A.It’s a T-shirt.B.It's a white T-shirt.C.It's his T-shirt.5.A.He is forty.B.He is a doctor.C.He is in black pants.II.聽5段短對話。從A、B、C三個選項中,選擇最佳答案,并在答題卡上將 該項涂黑。每段對話聽兩遍。{每小題1分,共5分)
6.What does the man usually do on Sundays? A.He usually plays computer games.B.He usually plays basketball.C.He usually plays football.7.What are they talking about? A.People.B.Cars.C.Traffic accidents.8.What’s the date today?
A.It’s March 17th.B.It’s March 18th.C.It's March 19th.9.Could the boy swim one year ago? A.Yes, he could.B.No, he c ouldn't.C.No, he can’t.10.What’s the woman’s favorite Chinese festival?
A.The Lantern Festival.B.The Spring Festival.C.The Mid-autumn Festival.III.聽1段長對話,從A、B、C三個選項中,選擇最佳答案,并在答題卡上將 該項涂黑。對話聽三遍。(每小題2分,共10分)。004km.cn 11.Does Kate like watching TV? A.No, she hates it.B.No, she doesn’t.C.Yes, she d oes.12.How many hours does Kate watch TV every day? A.About four.B.Over five.C.About three.13.Which TV program does Kate like best? A.Movies on TV.B.News reports.C.TV plays.149.How often does Kate watch movies on TV till midnight? A.Every day.B.Sometimes.C.Always.15.What is Jack’s advice?
A.Kate should have enough rest.B.Kate should watch TV for a long time.C.Watching TV is good for Kate’s health.IV.聽短文,從A、B、C三個選項中,選擇最佳答案,并在答題卡上將該項涂 黑。短文聽三遍。(每小題2分,共10分)
16.I am going to ______ every morning during the winter holidays.A.watch TV
B.join a guitar club
C.read English 17.In the evening of the holidays, I’ll watch TV ______.A.for the whole holidays B.for only one hour
C.for one night 18.I will join a ______ club.A.guitar
B.dance
C.music 19.I will ______ on time in my winter holidays.A.read English
B.watch TV
C.go to bed and get up 20.I’m sure I will ______ from the travelling.A.play the guitar betterB.learn English better C.have a good time and learn a lot 第二部分單項選擇(10分)
從下列各題所給的A、B、C、D四個選項中,選擇能填入空白處的最佳選 項,并在答題卡上將該項涂黑。(每小題1分,共10分)21.Pl ease give ______ English book to her.A.me
B.I
C.mine
D.my 22.—Could you please pass me something to eat? —What about some ______? A.water
B.orange
C.fish
D.tea 23.Her mother goes to work ______ bus every morning.A.by
B.at
C.on
D.in 24.—Who’s that girl?
—You mean ______ one with long blond hair? That's Jack’s daughter.A.a
B.an
C.the
D.不填 25.Lucy ______ a student last year, but now she ______ a teacher.A.is;is
B.was; is
C.was; will be
D.is; was 26.—Were you at home at 9:00 last night? I called you but nobody answered.—Sorry,I ______ at that time.A.take a shower
B.took a shower C.was taking a shower D.am taking a shower 27.—Mum, I can't find my shoes.—Hurry up!Your father ______ for us.A.is waiting
B.waited
C.waits
D.will wait 28.—I have ______ in learning English and I’m so worried.Could you help me with it? —Sure, I’d love to.A.joy
B.interest
C.trouble
D.fun 29.—I’ve never had such a wonderful time.Tha nk you for inviting me.— ______.A.That’s right.B.You're welcome.C.That’s it.D.Good job.30.When winter comes, days get ______.A.long and long B.short and short
C.longer and longer D.shorter and shorter 第三部分
完型填空(10分)
閱讀短文,從短文后各題所給的A、B、C、D四個選項中,選擇能填入空白處 的最佳選項,并在答題卡上將該項涂黑。(每小題1分,共10分)
Last week our school held a sports meeting.Everyone in our class felt very 31 because we were the winners.In the boys’ relay race, Michael 32__ very fast and our class won the first place.Yu Ting is good 33 the long jump and she 34 won.We,re sorry that we 35 in the high jump, but we’re sure we 36 do better next time.I took part in the boys,37 race.I did my best and was the first 38 the finish Line.TTKis encourages 39 _ a lot.Now I love sports better.I want to be a soccer player.I will take more exercise every day and I hope some day I 40 able to take part in the Olympic Games.31.A.worried B.surprised
C.excited D.frightened 32.A.runs
B.ran
C.run
D.is running 33.A.for
B.in
C.to
D.at 34.A.also
B.too
C.either
D.as well 35.A.do badly B.did badly
C.do well D.did well 36.A.could
B.can
C.may
D.would 37.A.400-meter B.400-meters C.400 meter D.400 meters 38.A.passes B.pass
C.passed D.to pass 39.A.me
B.him
C.her
D.us 40.A.am
B.be
C.will be D.was 第四部分閱讀理解(30分)
I.閱讀短文,根據(jù)短文內(nèi)容,從短文后各題所給的A、B、C、D四個選項中, 選擇最佳選項,并在答題卡上將該項涂黑。(每小題2分,共20分)A American boys and girls love to watch television.Some children spend six hours a day in school and four to six hours a day in front of the television set.Some even watch television for eig ht hours or more on Sunday.Televisions are like books or films.A child can leam bad things and good things from them.Some shows help children to understand the news and places from other countries or other times in history.With television a child does not have to go to the zoo to see animals or to the ocean to see a ship.Boys and girls can see a play, a concert or a game at home.Television brings many places and events into our homes.Some programs show crime and other things that are bad for children,so parents sometimes help them to find other interesting things to do.41.Childre n usually spend ______ a day in school.A.six hours
B.more than eight hours C.only a few hours
D.four hours 42.Some children spend eight hours or more ______ on Sunday.A.studying
B.playing C.watching TV
D.helping their parents 43.On television children can see ______.A.games B.big animals
C.oceans D.almost everything 44.“Television brings many places and events into our homes." means ______ A.television makes things happen on homes B.we can know places and events without going to see them C.we can see houses and buildings on TV D.we can find them easily 45.Parents sometimes help their children find other things to do when there is ______ for children.A.a bad program
B.an animal C.a game
D.an uninteresting film B William Henry Harrison, the ninth president of the US, was bom in a small town.When he was a boy, he was very quiet and shy.Because he was so quiet, every one thought that he wasn't bright.The people in the town often put a nickel(五 分硬幣)and a dime(一角硬幣)before him and asked him which to choose.He always chose the nickel and they laughed.One day a woman felt sorry for him.She askeddo you never take a dime and always choose a nickel instead? Do you know a nickel is worth much less than a dime?” “ Certainly I know it,,’ William answered slowly.“ But if I choose the dime,they will not ask m e to choose them any more.”
46.Which of the following is true according to the passage? A.William Henry Harrison was the eighth president of the United States.B.William Henry Harrison was bom in a big town.C.William Henry Harrison was very quiet and shy when he was a boy.D.William Henry Harrison wasn’t bright.47.Why did people in the town think that he wasn’t bright? A.Because he was bom in a small town.B.Because he was so quiet.C.Because he was the ninth president of the US.D.Because he liked money.48.Why did the people laugh at William Henry Harrison? A.Becausse he was bright.B.Because he was not shy.C.Because he loved the nickel.D.Because he always chose the nickel.49.Did William Henry Harrison know a nickel was worth much less than a dime? A.Yes, he did.B.No, he didn’t.C.Yes, he does.D.No, he doesn’t.50.What do you think of William Henry Harrison? A.Stupid.B.Clever.C.Naughty.D.Brave, II.閱讀短文,判斷短文后各題所給句子的內(nèi)容是否與短文內(nèi)容相符,相符 的請在答題卡上相應(yīng)題號后的選項中將A項涂黑,不相符的則將B項涂黑。(每小題2分,共10分)
2012 has also brought in a new age for Chinese TV.The country’s first 3-D TV channel has started broadcasting(播放).Opened on New Year’s Day, the channel will air different programs including documentaries, sports, serials and live events— including the CCTV New Year Gala and the Olympic Games.The 3-D channel broadcasts from 10:30 a.m.through midnight,Beijing time each day.There are no viewing fees(費用)during the early phase of operation(運行階段),and viewers can get the full 3-D effect by wearing 3-D glasses.Six TV stations have worked together to produce the channel, including CCTV, Beijing, Tianjin, Shanghai, Jiangsu and Shenzhen TV stations.Each station is working on a specific program, while the channel itself is broadcast through CCTV.51.The country's first 3-D TV channel started broadcasting on New Year’s Day.52.The 3-D TV channel will not air the Olympic Games.53.Viewers can get the full 3-D effect by wearing 3-D glasses.54.The 3-D TV channel broadcasts from 8:30 a.m.through midnight, Beijing time every day.55.Tliere are viewing fees(費用)during the early phase of operation(運行階段)? 卷 II第五部分
任務(wù)型閱讀(10分)
I.閱讀短文,按照短文后的要求答題。請把答案寫在答題卡相應(yīng)的位置。(每 小題2分,共10分)
More than 85% of respondents(調(diào)查對象)to a survey about the Chinese Lunar New Year said they expect the festival's traditions to be continued, survey res ults have show n.The survey, done online by the China Youth Daily Social Investigation Center on 7,012 people, showed that 88%of respondents consider reuniting with family to be the most important part of the festival.According to the survey, 78.6% of respondents see the festival as an opportunity to visit relatives as many people live far from their hometowns.Wan Jianzhong, a professor of Beijing Normal University, said that Lunar New Year traditions, including visiting the elderly, holding family get-togethere and setting off firecrackers(放鞭炮),have mostly been preserved(保持),but some others are disappearing.“ During the Spring Festival,people woricing outside their hometowns hurry to get home and reunite with their families.This causes a great national migration(遷徙),because the tradition of family get-togethers on Chinese New Years Eve is rooted in the hearts of the Chinese,” Wan said.任務(wù)一:替換
56.寫出短文中能替換下列句子劃線部分的詞或短語。
According to the survey, over 5960 respondents expect Lunar New Year traditions to be continued.任務(wù)二:用英語回答問題。
57.How many people were surveyed about the Chinese Lunar New Year? 58.Where was the survey done? 59.Was holding family get-togethers a Lunar New Year tradition? 任務(wù)三:翻譯
將短文中的劃線部分翻譯成中文。第六部分
詞匯(10分)
根據(jù)句意和首字母或漢語提示,寫出句中所缺單詞的正確形式,每空一詞。請把 完整的單詞寫在答題卡相應(yīng)的位置。(每小題1分,共10分)
61.Mike’s parents are b __________ teachers.Xk b1.co m 62.People will __________(飛往)to the moon for vacation.63.You should ___________(刷)your teeth after meals.64.Don't __________(吼)!I can hear you.65.Mary wanted to buy a __________(新的)computer.66.Keep your eyes closed.Don't open them u__________ I tell you to do so.67.Lucy is thinner than Lily, but Lily is t __________ than Lucy ? 68.M__________ is the fifth month of a year.69.My favorite season is __________(夏季)because I can swim in the river behind my house.70.What are you g__________ to do tomorrow? 第七部分情景交際(10分)
根據(jù)對話內(nèi)容,在每小題的空白處填上合適的句子,使對話意思完整、通 順。請把答案寫在答題卡相應(yīng)的位置。(每小題2分,共10分)
David:Excuse me, sir.Could you please tell me the way to the Space Museum? Man: Sorry,.David:Thank you all the same.(Then David goes and asks a woman for help.)David :
Excuse me,could you tell me how I can get to the Space Museum? Woman:Sure.Go along this street.When you reach the traffic lights, turn left.At the end of the road, you'll see it.David:It's very kind of you.By the way,72 ? Woman: No, it is not very far.David : Can I take a bus to get there? Woman : 73.David :74 ? Woman : You can take the No.17 bus.David: 75.Woman:It’s my pleasure.第八部分短文改錯(10分)
此題要求改正所給短文中的錯誤,對標有題號的每一行劃線部分和有漏字 符號(A)處作出判斷: 如無錯誤,在該行右邊橫線上畫一個如有錯誤(每行只有一個),則按 下列情況改正: 劃線部分為多余的詞:把該詞寫在該行右邊橫線上,并劃上斜線()。劃線部分為錯詞:在該行右邊橫線上寫出正確的詞。有浞字符號處缺一個詞:在該行右邊橫線上寫出所缺的詞。
請在答題卡相應(yīng)位罝答題。(每小題1分,共10分)
Two years ago, my English class is difficult.First of all,76.__________ I couldn’t understand the teacher when she speak English.She
77.__________
spoke so quick that I couldn’t understand every word.Later
78.__________ on,I realized that it don’t matter if you dont understand every
79.__________ word.I was also afraid to speak in die class, because I thought
80.__________ my classmates might laugh at me.I couldn’t always make complete 81.__________ sentences,either.Then I started to watched English-language TV.82.__________ I think that doing lots of listening practice is one of the secret of
83.__________ becoming a good language leamer.Now I enjoy leam English and 84.__________ I got an A this term.My teacher is very impressed.85.第九部分書面表達(30分)書面表達分A、B兩部分,A部分10分,B部分20分。A.假如你校成功舉辦了第一次英語角活動,請根據(jù)下列提示,以“The First English Comer in Our School”為題,用英語為學(xué)校的校報寫一篇20-30詞的簡 訊。請在答題卡相應(yīng)位罝答題。(10分)
活動時間:2012年6月14日下午3:00-4:00 活動內(nèi)容:用英語交談英語學(xué)習(xí)的方法 活動地點:學(xué)校圖書館 參加人數(shù):英語教師和學(xué)生共100余人 活動效果:學(xué)生積極參與,有利于促進英語學(xué)習(xí)
B.假如你是張武,是某校八年級學(xué)生,感到學(xué)習(xí)任務(wù)太重,每天要學(xué)習(xí)的科 目多,老師布罝的作業(yè)多,連周末和節(jié)假日都有做不完的作業(yè),很多時候放學(xué)后 老師還要補課,每天幾乎都沒有屬于自己的時間,睡眠時間嚴重不足,身心疲憊,不知道怎么辦。請你以張武的名義用英語寫一封80-100詞的信給某報社的中 學(xué)生信箱,談?wù)勀愕倪@種情況,并希望老師們少布罝作業(yè),多 關(guān)愛學(xué)生的健康成 長。(20分)
部分參考詞匯:editor(編輯)task(任務(wù))healthy growth(健康成長)subjects(科目)
第五篇:九年級物理長江寒假作業(yè)答案
九年級物理長江寒假作業(yè)答案
一、單項選擇題(每小題2分,共30分)1.下列物態(tài)變化中,屬于熔化的是()
A.鐵塊化成鐵水
B.盤子里的水晾干了
C.湖水表面結(jié)冰
D.水沸騰時水面出現(xiàn)“白氣”
2.下列物態(tài)變化現(xiàn)象中,屬于液化現(xiàn)象的是()
A.初春,冰雪消融匯成溪流
B.盛夏,剛從冰箱中拿出的飲料瓶外壁出現(xiàn)水滴
C.金秋,清晨的霧在太陽出來后散去
D.寒冬,晾在室外冰凍的衣服也會干 3.圖1所示四幅圖中,由凝華而形成的自然現(xiàn)象是()
4.下列物態(tài)變化過程中,需要吸熱的是()
A.初春,早晨河面結(jié)有薄冰
B.夏天,打開冰棍紙看到“白氣” C.深秋,屋頂?shù)耐呱辖Y(jié)了一層霜
D.冬天,冰凍的衣服逐漸變干 5.關(guān)于“熱機”,下列說法中錯誤的是:
()A.通過技術(shù)改進,可以使熱機的效率達到100%
B.減少城市熱島效應(yīng)的措施之一就是倡導(dǎo)“綠色出行”。
C.用水而不用其它循環(huán)物質(zhì)降低熱機的溫度,主要是利 用水的比熱容最大的特性
D.嚴寒的冬天,有人晚上把熱機水箱中的水放出,是防止氣溫降低時,水凝固而脹壞水箱 6.醫(yī)生在發(fā)燒病人身上擦鞋酒精溶液,可以達到降低體溫的效果。他的依據(jù)是()
A、酒精熔化時吸熱
B、酒精液化時吸熱 C、酒精汽化時吸熱
D、酒精升華時吸熱
7.魔術(shù)師把手伸進一鍋沸騰的“油”,1分鐘、2分鐘??再把手拿出來——沒事!對這一現(xiàn)象的分析正確的是()
A.魔術(shù)師有特異功能
B.是因為“油”的沸點低 C.“油”在沸騰時的溫度不斷升高
D.是因為手上沾有水吸收了“油”中的熱 8.下列四個實例中,能夠使蒸發(fā)減慢的是()
A.將濕衣服晾在通風(fēng)向陽處
B.將濕手伸到干手器下方吹 C.將新鮮的黃瓜裝入塑料袋
D.將新收獲的玉米攤開晾曬
9.下列有關(guān)熱現(xiàn)象的說法中正確的是()
A.高空中的冰晶在空氣中下落變成雨滴時,內(nèi)能增加了 B.初冬的早晨,地面上結(jié)有一層白霜屬于升華 C.所有物體在熔化過程中溫度不斷升高
D.物體的溫度可以降到-273.15℃以下
10.以下與物態(tài)變化相關(guān)的說法正確的是()
A.氣衣柜里放樟腦片,利用了汽化
B.氣溫低于水銀熔點的地方,不能使用水銀溫度計
C.北方的冬天,在菜窖里放幾桶水,是為了利用水的汽化吸熱
D.電冰箱使用的制冷物質(zhì)工作時,在冷凍室要液化,在冷凝器要汽化 11.如圖所示,能正確的描述冰的凝固過程的圖象是()
12.如圖3所示是一個能吹出冷熱風(fēng)的電吹風(fēng)簡化電路圖,圖中A是吹風(fēng)機,B是電熱絲。下列分析正確的是()
A.只閉合開關(guān)S2,電吹風(fēng)吹出熱風(fēng)
B.只閉合開關(guān)S1,電吹風(fēng)吹出冷風(fēng) C.同時閉合開關(guān)S1、S2,電吹風(fēng)吹出冷風(fēng)
D.同時閉合開關(guān)S1、S2,電吹風(fēng)吹出熱風(fēng) 13.下列有關(guān)“電”的說法正確的是()
A.摩擦起電的實質(zhì)是創(chuàng)造了電荷
B. 電燈中有電流,它的兩端一定有電壓 C.電路兩端有電壓就一定有電流
D.運動的電荷一定形成電流 14.如圖所示的電路,閉合開關(guān)S1和S2后,下列分析正確的是()
A.小燈泡亮,電鈴響
B.小燈泡亮、電鈴不響; C.小燈泡不亮、電鈴響
D.小燈泡不亮、電鈴不響
15.某種電腦鍵盤清潔器有兩個開關(guān),開關(guān)S1只控制照明用的小燈泡L,開關(guān)S2只控制吸塵用的電動機M。在圖5所示的四個電路圖中,符合上述要求的是()
二、填空題(第17、19、24、25題每空1分,其余每小題2分,共24分)16.我國家庭電路的電壓是___________V;對人體的安全電壓是不高于________V。
17.向云層投撒干冰是人工增雨、緩解旱情的方法之一。投撒到云層中的干冰
為氣體,并從周圍
大量的熱,使空氣中的水蒸氣
為小水滴或
為小冰晶,下落而形成雨。
18.如圖,把兩只手分別放入熱水和冷水中。然后,先把左手放入溫水中,感覺溫水的冷熱程度;再把右手放入溫水中,感覺溫水的冷熱程度。先后兩次對溫水冷熱程度的感覺是__________________(選填“左手感覺熱些”、“右手感覺熱些”或“一樣熱”)。這一現(xiàn)象表明____________(選填“物體的冷熱程度叫溫度”、“只憑感覺判斷溫度是可靠的”或“只憑感覺判斷溫度是不可靠的”)。
19.如圖所示是電冰箱工作原理圖。電冰箱工作原理是利用了一種叫氟利昂的物質(zhì)作為熱的“搬運工”,把冰箱冷凍室里的“熱” 搬運到冰箱外邊。氟利昂是一種既容易___________,又容易____________的物質(zhì)(填物態(tài)變化的名稱)。工作時,電動壓縮機將氟利昂蒸氣壓縮并把它壓入冰箱的冷凝管里,在這里蒸氣變成液體并_________(“吸熱,或“放熱,),這些熱被周圍空氣帶走。冷凝器里的液態(tài)氟利昂,經(jīng)過一段很細的毛細管進入冰箱內(nèi)冷凍室的管子里,在這里迅速汽化________(“吸熱”或“放熱”),使冰箱內(nèi)溫度降低,生成的蒸氣又被壓縮機抽走,壓入冷凝器,再液化并把從冰箱內(nèi)帶出來的熱放出。氟利昂這樣循環(huán)流動,冰箱冷凍室里就可以保持相當?shù)偷臏囟取?/p>
20.“鉆木”能“取火”,說明____________可以改變物體的內(nèi)能;“烤火”能“取暖”,說明____________可以改變物體的內(nèi)能.
21.2011年春季以來,長江中下游地區(qū)遭遇罕見的旱災(zāi)。進入夏季以來,氣溫的升高加劇了旱情,這是因為氣溫的升高________(選填“增加”或“減小”)水的蒸發(fā)。為了節(jié)約用水,果農(nóng)們利用了滴灌的方法給果樹澆水,如圖7,把水滴入果樹下的土里,這是利用___ _____(選填“增加”或“減小”)水在地面的表面積來減小水的蒸發(fā).22.物理學(xué)中把被毛皮摩擦過的橡膠棒所帶的電荷稱為_____電荷;電荷間的相互作用規(guī)律是_______________________。
23.臺式電腦使用一段時間后,為保證電腦的穩(wěn)定性,需要打開主機箱蓋除塵,這是因為散熱風(fēng)扇的扇葉在轉(zhuǎn) 動過程中與空氣摩擦帶上了
,可以
輕小物體,所以灰塵會附著在扇葉上。
24.如圖是簡化了的電冰箱的電路圖。圖中M是壓縮機的電動機,L是電冰箱內(nèi)部的照晚燈。當電冰箱接入電路后,關(guān)閉了電冰箱的門時,開關(guān)S1與S2的狀態(tài)是S1___ __ S2___
__;當又打開正在工作的電冰箱門時,開關(guān)S1與S2的狀態(tài)是S1___ __ S2___
__。(填“閉合”或“斷開”)
25.20kg的柴油完全燃燒釋放的熱量是
J。(q柴油=3.3×107J/kg)
三、簡答題(4分)26.夏天,扇扇子為什么會感到?jīng)隹?
四、計算題(每小題7分,共14分)27.木炭的熱值為3.4×107J/Kg,完全燃燒多少千克木炭能放出1.7×107J的熱量?如果這些熱量全部被質(zhì)量為50Kg、溫度為10℃的某種液體吸收,溫度升高到90℃。那么,這種液體的比熱容是多少?
28.完全燃燒140克的干木柴所放出的熱量讓質(zhì)量為5Kg、初溫為30℃的水全部吸收,水溫會上升多少℃?(干木柴的熱值為1.2×107J/Kg,大氣壓為1標準大氣壓)
五、實驗探究題[第30題(3)第二空、第31題、第33題第三、四空,34題每空各2分,其余每空1分,共28分] 29.請將圖所示的測量結(jié)果記錄在相應(yīng)的空格中。
(1)溫度計的示數(shù)_______℃;(2)如圖乙所示,體溫計的示數(shù)是_______℃;
(3)某次測量時兩電表示數(shù)如圖所示,則通過小燈泡的電流為
A,小燈泡兩端的電壓為
V,30.在探究水的沸騰實驗中:
(1)1個標準大氣壓下酒精的沸點是78℃,煤油的沸點是150℃,完成本實驗所用的溫度計液泡中的液體可能是
(選填“酒精”或“煤油”);
(2)下表是某組同學(xué)的實驗記錄,他們測得水的沸點是
℃; 時間/min 0 2 4 6 8 10 溫度/℃ 90 93 96 99 99 99
(3)請根據(jù)上表的數(shù)據(jù)在圖24的坐標中描點畫出水的溫度 隨時間變化圖象。(2分)
31.根據(jù)圖所示的實物電路,在虛方框內(nèi)畫出對應(yīng)的電路圖.
32.將兩盞相同的燈L1和L2串聯(lián)或并聯(lián)后,直接接在電壓為6V的電源上。兩燈都發(fā)光。請根據(jù)下列操作及觀察到的現(xiàn)象,判斷燈L1、L2的連接方式,并填入表格中。
操作 取下一盞燈 取下一盞燈 將電壓表并聯(lián)接在一盞燈的兩端 將電壓表并聯(lián)接在一盞燈的兩端
現(xiàn)象 另一盞燈仍能發(fā)光 另一盞不發(fā)光 電壓表示數(shù)為3V 電壓表示數(shù)為6V L1、L2連接方式
33.炎熱的夏天來啦!小明家買了一臺電風(fēng)扇。站在電風(fēng)扇旁,小明覺觸涼爽。于是他大膽猜想:是電風(fēng)扇降低了室內(nèi)溫度。為了驗證猜想,他關(guān)閉了門窗,選取兩支相同的溫度計,進行了如下的探究實驗。下列步驟中有來完成的部分,請將其補充完整。
這一現(xiàn)象引發(fā)了小明的思考,為什么室溫沒有降低,而吹電風(fēng)扇卻覺得涼爽呢?小明聯(lián)想到液體蒸發(fā)的知識。人體是通過汗液蒸發(fā)來調(diào)節(jié)體溫的,人在吹電風(fēng)扇時,汗液比平時蒸發(fā)得更快,所以感到?jīng)鏊?/p>
為了證明吹電風(fēng)扇能加快蒸發(fā)吸熱的速度,小明又進行了實驗,他只增加一種物質(zhì),并且首先補充了一個步驟,然后重復(fù)前面實驗的操作。請你將下表的內(nèi)容補充完整。
34.在“探究串聯(lián)電路中各點的電流有什么關(guān)系”時,小明設(shè)計實驗如下.
A點的電流IA B點的電流IB C點的電流Ic 第一次測量 0.3A 0.3A 0.3A 第二次測量 0.2A 0.2A 0.2A 把兩個燈泡L1、L2串聯(lián)起來接到如圖所示電路中,分別把圖中A、B、C各點斷開,把___________接入,測量流過的電流,看看它們之間有什么關(guān)系.換上另外兩個小燈泡,再次測量三點的________,看看是否還有同樣的關(guān)系.上表是兩次測量的記錄數(shù)據(jù).
分析和論證:
(1)在拆接電路時,開關(guān)S必須處于________狀態(tài).
(2)結(jié)論:串聯(lián)電路中各處__________相等.
漳州市浦南中學(xué)期中考試卷
九年級物理答案
一、單項選擇題(每小題2分,共30分)題號 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 答案 A B D D A C B C A B A D B C D
二、填空題(第17、19、24、25題每空1分,其余每小題2分,共24分)16.220
17.升華
吸熱
凝華
18..⑴右手感覺熱些
只憑感覺判斷溫度是不可靠的 19.汽化(液化)
液化(汽化)
放熱
吸熱 20.做功
熱傳遞
21.增加,減小
22.負
同種電荷相互排斥,異種電荷相互吸引 23.電荷(靜電);吸引
24.閉合 斷開
閉合閉合 25.6.6×108J
三、簡答題(4分)26.夏天,扇扇子可以加快空氣流動(1分),從而加快蒸發(fā)(1分),蒸發(fā)時吸熱(2分)。所以人會感到?jīng)隹臁?/p>
27. 0.5 Kg;4.25×103J/(Kg?℃)
28.Q放=mq=0.14kg×1.2×107J/kg=1.68×106J 根據(jù)Q=cmΔt可算出Δt=80℃,但在1標準大氣壓下,水的沸點是100℃,雖然繼續(xù)吸熱,但溫度始終保持100℃不變。所以水升高的溫度應(yīng)為:
Δt=100℃-30℃=70℃ 29.28
36.6 30.(1)煤油
(2)99(3)略 31.如圖
32.并聯(lián)
串聯(lián)
串聯(lián)
并聯(lián)
33.(1)分別放在靠近電風(fēng)扇和遠離電風(fēng)扇的位置 [增加物質(zhì)]
水(酒精)
[補充步驟]
將兩支溫度計的玻璃泡同時蘸取適量的水(酒精)
[分析論證]
靠近電風(fēng)扇的溫度計的示數(shù)降低較快(遠離近電風(fēng)扇的溫度計的示數(shù)降低較慢)
34.電流表 電流
(1)斷開 2)電流
(