优课网
首页
数学
语文
英语
化学
物理
政治
历史
生物
首页
> 探究实验题:这是一位同学写的一份关于探究“光对鼠妇生活的影响”的实验报告,由于被水浸渍,一些地方字迹已经看不清楚,请你将它补充完整,并回答他所提出的问题。实验内容:光-七年级生物
探究实验题:这是一位同学写的一份关于探究“光对鼠妇生活的影响”的实验报告,由于被水浸渍,一些地方字迹已经看不清楚,请你将它补充完整,并回答他所提出的问题。实验内容:光-七年级生物
题目简介
探究实验题:这是一位同学写的一份关于探究“光对鼠妇生活的影响”的实验报告,由于被水浸渍,一些地方字迹已经看不清楚,请你将它补充完整,并回答他所提出的问题。实验内容:光-七年级生物
题目详情
探究实验题:这是一位同学写的一份关于探究“光对鼠妇生活的影响”的实验报告,由于被水浸渍,一些地方字迹已经看不清楚,请你将它补充完整,并回答他所提出的问题。
实验内容:光对鼠妇生活的影响提出问题:鼠妇生活在阴湿的环境中,光对鼠妇生活有影响吗?
作出假设:________________________。
设计方案:
(1)材料用具:20只鼠妇,湿润的土壤,纸盒一个,纸板、玻璃板各一块。
(2)实验装置:在纸盒里放上一层湿润的土壤,以横轴中线为界,一侧盖上玻璃板,一侧盖上纸板。控制这个实验的变量是_________,因此在盒里就形成了________和________两种环境。
(3)方法步骤:
①将鼠妇放入纸盒中,两侧的中央放入数量______的鼠妇,静置2分(min)。
②每分钟统计一次明亮处和黑暗处的鼠妇数目,统计10次,必须统计多次的原因是_________________。
(4)实施计划:按照上述实验方案做实验。实验过程中要仔细观察,认真_______。
(5)实验记录:不同时间,不同环境下的鼠妇数目
(6)得出结论:_________________。
(7)实验结束后,你怎么处理鼠妇呢?______________。
题型:探究题
难度:中档
来源:福建省期中题
答案
作出假设:鼠妇生活在阴湿的环境中,光对鼠妇生活有影响。
(2)光照;黑暗;明亮(注意“黑暗”和“明亮”亦可对换)
(3)相同(或20只);取平均值,减少实验误差(或取平均值,避免实验偶然性,提高实验准确度等类似表述即可得分)
(4)记录
(6)得出结论:鼠妇生活在阴暗的环境中,光对鼠妇生活有影响。
(7)将鼠妇放回适合它们生存的环境(或放回大自然等即可得分)
上一篇 :
visitors will come to Beijin
下一篇 :
Kate doesn’t want to buy th
搜索答案
更多内容推荐
I’m tall but my sister is of medium _________.A.heavyB.buildC.heightD.high-七年级英语
--Are you hungry?--.A.A littleB.A bit littleC.A bit ofD.Bit-八年级英语
The boy read the article ________ and found something important in it.A.careful enoughB.carefully en
To our joy, Zhou Yang _______comes from our province won one gold medal in the Olympic Winter Games
在探究“光对鼠妇生活影响”实验中,将实验盒一边遮光,另一边不遮光,这是为了[]A.提供一种无光的条件B.便于观察C.控制变量D.设置一个对照实验-七年级生物
— ______do millions of online users visit the home page of the government for?— To read the news and
--Is New Zealand a big country?--No, New Zealand only has two islands.One is North Island, andis Sou
------What kind of ticket do you have?------ We have tickets$105 the hard sleeper.A. at; forB. for;
----_______ do you have out with your friends?----Once a week.A.How longB.How oftenC.How manyD.How s
---_______do you go to the theatre, Li Lei? ---Once a month.A.How oftenB.How many timesC.How longD.H
Let’s go to the ______ to study for the exam.A.factoryB.hospitalC.cinemaD.library-九年级英语
—How do you like the book you read yesterday?—Oh! It’s one of ______ books I’ve ever read.A.interest
— How old is his father?— He is thirty ________.A.yearsB.years oldC.oldD.year old-七年级英语
-My father with my grandparents _______ Shanghai.-Really? _______ will they come back?A.have been to
— is it from your home to the centre of the town?— Only 10 minutes on foot.A.How oftenB.How soonC.Ho
某实验小组在探究“光对鼠妇生活的影响”时做了如下实验,请分析回答下列问题。(1)用硬纸板制成一个长方形的纸盒(上方没有盖),将纸盒分成长度相等的两部分,一部分用黑纸包好-七年级生物
--What's theof the mountain?--It's 2,000 meters high. A.highB.hightC.heightD.heigh-七年级英语
The old man lives ________in a _________ house. He sometimes feels__________.A.alone ; alone; lonely
— How much of his speech do you think you have understood?— . I wish I had worked harder.A.Quite a
--Excuse me, teacher, can I ask you something about the last class? I didn’t quite understand it.--S
—Is the woman who walked past just now your teacher?—Yes. She teaches ______ music.A. us B. ourC. ou
It takes rile an hour ______ to school by bike.A.getB.to getC.getting D.gets-七年级英语
—Excuse me. I wonder if you can provide me ______ some information about the fantastic sights here.—
----Walking is _____legs and hearts.---Yes, we should often walk.A.bad forB.good forC. good at-八年级英语
--With the _____________ of science and technology, people can talk with each other much more conve
— Jenny, I need some milk.—OK, Mum.____ do you need?A.How longB.How farC.How oftenD.How much-七年级英语
--Psychologists think it's bad tobecause thinking too much about oneself may cause depression.-
--Beijing is really an old city and there're many places of interest.--So it is. Why not stay h
I gave her _____ address and she gave me ______.A.my ; herB.my; hersC.mine; herD.mine; hers-七年级英语
—________ are we going to meet?— In front of the shopping center.A.WhenB.WhereC.HowD.Why-七年级英语
They told me it would be cheap, but , it cost me nearly 5,000 dollars.A.in factB.for exampleC.of cou
鼠妇是一种灰褐色或黑色的小动物,我们经常可以在花盆、石块下面发现它们,它们的身体扁平,呈长椭圆形,有多对足。当我们搬开花盆和石块,鼠妇很快就爬走了,这是为什么呢?-七年级生物
— Let’s go to the community if it tomorrow.— But nobody knows if it tomorrow.A.won’t rain; rainsB.do
There is going to _____ an art exhibition on Friday.[ ]A. isB. be C. haveD. has-八年级英语
-Before I enter the competition, I want to know the __________.-The winner can get a gold medal.A.p
— ________ is your school?—I can’t remember it well. I________ for ten years.A.How big, have left B.
The policeman asked the child ________ cross the street ________ the traffic lights turned green.A.n
—Mum , could you buy me a dress like this?---- Certainly, we can buy _____ one than this, but ______
If you can’t decide which of the two books to borrow, why don’t you take _____?I won’t read them thi
Old people shouldn’t . In fact, they have stronger and clearer minds.A.look downB.be looked downC.lo
—Let me help you carry the box, Granny.—Thank you, Li Ping. It’s very nice you me.A.of; to helpB.for
We’re doing job we all feel proud of ourselves.A.such meaningful; andB.such meaningful; thatC.such a
—________ does it take to go to Hangzhou from Wenzhou by train?—It usually takes about three hours.A
— ________ have you learned to play the piano?— ________ five years ago.A.How long, ForB.How often,
Put on your coat, ________ you may catch a cold.A.andB.soC.butD.or-八年级英语
Please _________ my keys here, I need them.A.bringB.answerC.foundD.lost-七年级英语
Although he’d eaten up two bowls of rice, he still didn’t feel ____.A.enough fullB.full C.enough ful
The old men should be treated with .A.kindB.kindnessC.kindlyD.kinder-八年级英语
It’s getting warmer and warmer, and _____ are turning green.A.tree leafB.trees leafsC.trees leavesD.
________ does it take you to do your homework every day?A.How oftenB.How longC.How manyD.How far-七年级
返回顶部
题目简介
探究实验题:这是一位同学写的一份关于探究“光对鼠妇生活的影响”的实验报告,由于被水浸渍,一些地方字迹已经看不清楚,请你将它补充完整,并回答他所提出的问题。实验内容:光-七年级生物
题目详情
实验内容:光对鼠妇生活的影响提出问题:鼠妇生活在阴湿的环境中,光对鼠妇生活有影响吗?
作出假设:________________________。
(1)材料用具:20只鼠妇,湿润的土壤,纸盒一个,纸板、玻璃板各一块。
(2)实验装置:在纸盒里放上一层湿润的土壤,以横轴中线为界,一侧盖上玻璃板,一侧盖上纸板。控制这个实验的变量是_________,因此在盒里就形成了________和________两种环境。
(3)方法步骤:
①将鼠妇放入纸盒中,两侧的中央放入数量______的鼠妇,静置2分(min)。
②每分钟统计一次明亮处和黑暗处的鼠妇数目,统计10次,必须统计多次的原因是_________________。
(4)实施计划:按照上述实验方案做实验。实验过程中要仔细观察,认真_______。
(5)实验记录:不同时间,不同环境下的鼠妇数目
(7)实验结束后,你怎么处理鼠妇呢?______________。
答案
(2)光照;黑暗;明亮(注意“黑暗”和“明亮”亦可对换)
(3)相同(或20只);取平均值,减少实验误差(或取平均值,避免实验偶然性,提高实验准确度等类似表述即可得分)
(4)记录
(6)得出结论:鼠妇生活在阴暗的环境中,光对鼠妇生活有影响。
(7)将鼠妇放回适合它们生存的环境(或放回大自然等即可得分)