苏教版三年级科学上册复习资料及检测试题
新苏教版三年级上册科学全册知识点总结归纳期末复习资料
新苏教版三年级上册科学全册知识点总结归纳期末复习资料新苏教版小学科学三年级上册各单元知识点归纳总结第一单元第一单元认识空气元知识点认识空气元知识点1.像粉笔.水一样,空气也占据一定的空间。
空气可以被压缩,压缩空气具有弹性。
2.把一个袋口打开.口朝下的塑料袋快速移动后握紧,塑料袋会鼓起来,这是因为塑料袋装满了空气。
3.在做注射器挤压空气实验时,放一小块泡沫在针简里会看得更清楚。
4.压缩空气在生活中的用途充气城堡.射钉枪.足球.喷水壶喷水.充气床垫等。
5.电子天平的使用方法1将天平放在水平桌面上,打开电源;2按一下“归零”按钮,确保在称量之前显示为“0”。
(3将要称的物体放在电子天平上,读取显示数字即可。
6.通过用电子天平测皮球充气前和充气后质量的变化,可以验证空气是否有质量。
,精品教育资料文库。
7.17世纪,伽利略做了一个实验用气泵向一个大玻璃瓶打足气,使瓶中尽可能多装一些空气,并封住瓶口,用天平称出瓶子的质量。
然后把瓶口打开,再称,发现瓶子的质量减少了。
伽利略认为,减少的质量就是把瓶口打开后跑出来的空气的质量,从而证明空气是有质量的。
8.科学家用精确的实验测得在接近地面处,1升空气的质量约为1.29克,相当于3枚回形针的质量。
9.热空气要比相同体积的冷空气质量轻,所以热空气会向上升,冷空气会下降。
10.暖气片都安装在房间的低处,可以让空气自然上升,提高室内气温。
11.阳光使地表温度升高,温暖的地面加热它上方的空气,冷空气补充到热空气上升后留下的空间里,热空气从地面上升,越升越高,然后又开始冷却下降,空气总是循环运动,空气的流动形成了风。
12.生活中扇扇子.用吹风机吹头发,吹风车.挤袋子都可以制造风。
第二单元第二单元研究土壤研究土壤单元知识点单元知识点1.可以到田野.花圃或池塘边等不同的地方挖一些土壤来研究。
在挖土的时候必须有大人陪同才能去水边。
2.土壤是覆盖在地球表面的一层疏松物质,它具有一定的肥力,能够提供植物生长所需要的营养物质。
【新教材】苏教版小学科学三年级上册:全册单元试卷、期中期末总复习试卷
第一单元全练全测1.空气存在于我们________,是无色、________、透明的。
2.在一个密闭的容器里,压缩空气,空气质量________,但体积________。
3.自行车上利用了压缩空气的部件是________。
4.空气很轻,但有________,占据________,可以被压缩。
5.1783年,法国人利用______________的原理,成功制造出载人的热气球。
6.风是由________形成的。
7.用充气筒吹气球,气球会鼓起来,这说明空气能________。
二、判断题。
(10分)1.空气看不见,摸不着,所以它不占据空间。
()2.由于我们看不见空气,因此无法对空气进行观察研究。
()3.空气被压缩得越厉害弹性越大。
()4.空玻璃杯竖直倒扣在水槽里,当玻璃杯倾斜时,发现有空气跑出来。
()5.土壤颗粒间的空隙被空气占据着。
()6.因为空气很轻,所以我们无法测量空气的质量。
()7.空气有一定的质量,但是质量很轻。
()8.在没有风的时候,烟囱里冒出的烟会向下走。
()9.冷空气下降,是因为冷空气比较重。
()10.冷热空气的循环形成了风。
()三、选择题。
(20分)1.下列不属于压缩空气在生活中的应用的是()。
A.喷水壶B.射钉枪C.电风扇2.足球里装的是()。
A.棉花B.热空气C.压缩空气3.下列现象中不能让周围的人感知到空气流动的是()。
A. B. C.4.空气总是在()运动的。
A.向上B.向下C.循环5.相同的两个气球,吹大后和原来相比要()。
A.重一些B.轻一些C.一样重6.先将一个纸团塞在一个杯子的杯底,然后将杯子竖直倒扣在水中,杯底的纸团不会接触到水,这主要是因为空气()。
A.有质量B.占据空间C.能流动7.有一瓶装满空气的玻璃瓶,我们可以往里面打进一些空气,也可以从瓶中抽出一些空气,这种现象说明()A.空气只可以被压缩B.空气只可以被扩张C.空气既可以被压缩,也可以被扩张8.下面的物体中,()是利用压缩空气有弹性的性质制成的。
苏教版三年级上册科学期末专项复习检测卷实验探究题
苏教版三年级上册科学期末专项复习检测卷实验探究题1.小科同学进行空气占据空间的探究实验,请协助完成:(1)如图甲所示,小科同学把一团纸巾放在一个塑料杯的杯底,然后将杯子竖直倒扣入水中。
实验中观察到纸( )(填“湿了”或“没湿”),说明空气能( )空间。
(2)如果塑料杯底部扎一个小孔,杯子底部的纸团( )(填“湿了”或“没湿”)。
(3)如图乙所示,将一只弹性很好的气球放入玻璃瓶内,气球嘴套在瓶口上,气球( )(填“能”或“不能”)吹大到整个瓶子。
2.通过模拟热气球上升的实验,如图我们一起探究热气球会上升的原理吧!(1)实验步骤:a点燃蜡烛。
b把塑料袋口朝(选填“上”或“下”)打开,放在蜡烛火焰的(选填“上方”或“下方”)。
c观察塑料袋的变化,做好记录。
(2)实验现象:过一段时间塑料袋会,松手后会(选填“上升”或“下降”)。
(3)实验结论:空气受热体积会(选填“膨胀”或“缩小”),热空气比同体积的冷空气(选填“轻”或“重”),所以热空气会(选填“上升”或“下降”)。
热气球上升就是利用了这个原理。
3.小明利用比较充气皮球和踩瘪的皮球的重量来验证空气是有质量的。
下面是他的实验过程,请将实验内容补充完整。
【实验材料】电子天平、皮球、、气针等。
【实验步骤】(1)实验前,将电子天平放在水平桌面上,打开电源,按“”按钮,确保在称量之前显示数字为“”。
(2)用气针和打气筒给皮球打满气,然后用称出其质量。
(3)把气针插进皮球的气孔中,用脚将皮球踩瘪,把皮球里面的尽量排尽。
(4)把踩瘪的皮球放在电子天平上,称出其;观察两次称量的数值是否相同。
【现象与分析】两次称量的数值是(填“相同”或“不同”)的。
【实验结论】空气是(填“有”或“无”)质量的。
4.为了比较沙质土、黏质土和壤土的渗水能力,某科学研究小组进行了如下实验。
请分析回答:(1)在实验过程中可变的条件是,不变的条件是。
(两空均填序号)①加水的时间②加水的量③土壤的种类④土壤的量⑤停止加水的时间(2)在实验过程中,发现:a沙质土流下来的水最多;b壤土流下来的水量适中;c黏质土流下来的水最少。
新苏教版小学科学三年级上册重点复习题
苏教版小学科学三年级上册重点复习题第一单元《我们都是科学家》1.当听到“科学”这个词的时候,我想到了(农业研究)、(实验分析)、(医学研究)、(珠峰测量)、(航天探索)……2.我们做过的类似科学家的活动有:(看小鸡出壳)、(看自己的影子)、(观察蚂蚁)、(拆玩具)、(看电视机里有什么)等。
3.(好奇心)让我们有问不完的“为什么”,并驱使我们不断地寻找问题的答案。
4.(琴纳)发现了(接种牛痘预防天花)的办法.5.科学探究的步骤是:(提出问题)、(作出猜测)、(寻找证据)、(得出结论)。
6.我知道的科学家的名字有:(琴纳)、(爱迪生)、(居里夫人)、(李时珍)、(袁隆平)、(牛顿)……7.英国人(罗杰特)发现了人眼具有(暂时记忆能力)。
(电影)就是根据他解释的原理制作的。
8.纸鹦鹉站起来的秘密是(重物在支撑点的下面)。
第二单元《我眼里的生命世界》1.校园里(小花)、(小草)、(树木)、(小鸟)、(蝴蝶)、(毛毛虫)、(蚂蚁)、(蜻蜓)、(蜜蜂)等都是有生命的。
2.自然界中的物体可分为(有生命的)和(没有生命的)两大类。
(有生命的物体)叫做(生物),(没有生命的物体)叫做(非生物)。
3.有生命的物体的共同特征有:(能长大)、(会繁殖)、(会死亡)(要呼吸)、(要吃东西)、(都对刺激有反应)等。
4.(生物)一般可分为(植物)和(动物)。
5.寻找有生命的物体注意:(随时记录)、(注意安全)、(不惊动或伤害小生物)、(校外寻找要和大人打招呼)。
6.植物的共同特征是(依靠阳光独立生活,位置一般不移动)。
7.观察一种植物,我们可以用(语言)、(文字)和(图画)来描述。
8.树叶的生长形式有(对生)、(互生)、(轮生)。
9.蚂蚁的身体分为(头)、(胸)、(腹)三部分,头上有(一对触角),胸部有(三对足)。
10.蜗牛的身体分为(壳)、(头)、(腹足)、(尾),头上有(两对触角),(腹足)可以运动。
11.金鱼的身体分为(头)、(躯干)和(尾)三部分,生活在(水中),靠(鳃)呼吸,靠(鳍)运动。
苏教版三年级科学上册复习资料及练习题
苏教版三年级科学上册复习资料及练习题(Jiangsu version of the third grade science book review materials and exercises)1 Jiangsu review version of the third grade science first volume unit we are scientists^ 1, curiosity always makes us to explore many things want to know why this is so, so we are constantly looking for and driveThe answer to the question. Our experiences are quite similar to those of scientists.- 2, scientists working [or four] is the stage of scientific research experience questions, make a guess, looking for evidence, it is concluded thatTheory. In order to conduct scientific research, we must first learn to ask questions.^ 3, everywhere in life science science is to ask questions and try to solve these problems.When scientists ask questions, they must figure out how to solve them.Scientific research is the process of asking questions and trying to find answers."4," Edward Jenner is a British country doctor he is the one who found vaccination against smallpox scientists.5 Niu Huisheng, a similar smallpox disease that is vaccinia.The 6, in 1824 the British Rogent made a "moving villain" fun activities and the activities of made theirExplain later this explanation is accepted by people movie is according to the principle of making his interpretation of the.Rogent, a British physician, discovered that the human eye has a temporary capacity for memory"7, I know that scientists haveYuan Longping breed was hailed as the "father of hybrid rice new varieties of hybrid rice"Madame Curie discovered radiumEdison invented the electric light is known as the "king of the invention"Li Shizhen write "Compendium of Materia Medica"8, I know the scientific research agricultural research, medical research, space exploration.9, "secret paper parrot" stand up "is under the light weight keep balance.10, the low center of gravity objects more stable.11, if an object f C share is not easy to fall.A heavy, light, B, placed in the low place, C light, heavy, D, as heavy as down12, why can the clown in the string acrobatic this is f shareA solves the problem,B guesses, andC asks questions13, just walk the acrobats holding a long pole to share R BA keep the balance of the windshield B14, the observation of ants is also a scientific study. R V share15. Science is only about scientists. F * share16, science is very advanced problem our students don't need to know. F * share17, try to balance, so that a variety of things stand on your fingertips. R V share18, as long as we observe carefully from the side of the inquiry problems can enter the world of science become a little scientist.R V share19, as long as it is engaged in scientific research work of the we call them scientists. F * share20, the activities we do have nothing to do with scientific inquiry. F * share21, the following does not belong to the scientific inquiry activity is f B share2 A. students study a problem that appears in the textbookB. Xiao Ming smashed the TVC. technicians observed the growth of corn in TanakaThe D. army made his own model plane22, do you think a scientist is observed following behavior in D from exergy is wrong.A. careful observation,B. is good at thinking,C. has curiosity,D. don't doubt adults' words23, we should conduct scientific research should first learn from La exergyA. asks questions,B. makes assumptions,C. looks for evidence, andD. concludesUnit second the life world in my eyesThe 1 is a life, biological objects of common biological features in LA could grow and die, need nutrition, can reproduce,Breathe, react to stimuli. So I can judge by the robot is inanimate increase because it does not eat.2, water droplets, robots, computers, clouds, waterfalls are not biological.3, living objects must be able to move. In the trees, such as those included * activities4, in the observation activities included C from LA is not correct.A. Caution!B. doesn't scare small animalC. can directly touch the animal, snatch.D. keep quietThe 5 plants, is to rely on sunlight for independent activities generally do not move the position of La La does not need to search for food.6, through the observation and comparison of LA I think the common characteristics of plants are in the sunlight and air are tending to have root absorption of water and nutrients can increase openThe results shown are flowers can reproduce.The growth of 7, the leaves have long form of birth, alternate, in whorls of three forms. The place where the leaves are grown is called the festival"OppositeYe ZiAs in the leaves of Osmanthus fragransEach section of the two leaf growth of 22 relative increaseAlternateYe ZiAs in the pile of leavesEach section of the growth of a leaf is observed in the interactionarrayVerticillateYe ZiAs in Ginkgo biloba leavesThere are three leaves growing in each section8, some plant leaves increase some plant leaves. As in the poplar leaves observed for deciduous pine9, in the shape of "snail snail has a spiral shell, soft body, head tentacles K when the snail is frightened or touchedWould curl up into the shell love life love in La snail activity at night in the dark, damp places La snail. Put the wine in front of the snail,Vinegar stimulus shown it will shrink tentacles.The snail head, chest and abdomen, the shell is composed of four parts.The snail will accelerate the escape from danger and stimulation of exergy x10, how to share the snail is crawlingFlat belly snail under the foot is actually a transverse increase these stripes like water as shown by the snail back wave stripesThe fluctuation observed extending and retracting forward. That is, a snail crawls on its belly. The snail's mucus acts as a protective element on its creeping parts.3 snails eat food on their tongues.If you want a snail to run fast, you can lure it with apples11, the ant is a social animal in love together in love ants eat sweets and biscuits and life peer. The body of an ant isdivided into head and thorax,The three part of the abdomen. Ants are the strong men of animals. It transmits information through the tentacles and secretions of the gas.The 12, not "a" ant together in particular when they will immediately end number in the bite up with the ants in the nest is notBut don't bite in the will to feed each other.13, small animal has characteristics of common R growth, death, breathing, eating, exercise, breeding,Small animal living environment, the different characteristics of F shape characteristics and habits and so different14, to classify plants F, water hyacinth, cactus plants, Shorea, coconut trees, corn, peanut, duckweedTerrestrial plants have R cactus, Shorea, coconut trees, cornAquatic plants, water hyacinth, K, duckweed and Alternanthera philoxeroides15, some small animal does not need the air to breathe can survive from La *16, some animal does not need water for example by ants never drink at the river. From La *17, observation is the effective means of learning science in that observation is to watch and record.* 18, animal and plants have life in them so people referred to as biological.19, observe the trees can be used in the bark when rubbing method to record the results of the observation of bark.The 20, below the circle in the proper position in person, animal, plant K, inanimate object.Third unit --- the source of life --- waterThe 1, water is an important part of the animal and plant body in the water in almost all biological life activities play a essential role.The water absorption and nutrition for our health is very important in the excretion of waste from boiling water. We are able to maintain normal body temperature as wellWater. In general if 5 consecutive days without water in the people's life will be threatened.The 2, water in plants and animals in a large proportion of the human body is 65% water in 90% water vegetables.3, long life without boiling water in the water like a mother's milk as in the feeding of all life on earth.4, we study the grass every day to drink in the in vitro when a few drops of oil to prevent evaporation of water.5, water is the cradle of life in the water or the nature of the "air conditioner" from your laThe 6 objects are commonly used methods, understanding R with eyes to see and smell, taste and touch. To understand the objects in the orderFor the sake of safety in the end do not casually smell more not just taste.7, liquid water will flow in the F shape in the fixed water has such characteristics as the object in the liquid we call it.- 8,The characteristics of the solid waterCheckExplain the magic of waterplaceNo colorNo smellInsipidness、transparentNot fixedThey'll crawlwaterCapillarity of waterWill unite"The waterSurface tension of waterThe pressure of spraying water 4 shapeEasily mobileliquidThe water"Lift"The waterBuoyancy of waterCan dissolve oneMaterialwaterWater dissolves some thingsqualityUnit fourth what are they made of?Also, 1 items are made of materials with La materials include natural and artificial materials have shown natural materials from nature is observed according to its originSuch as wool, wood, stone. The artificial material is made by processing natural materials or the properties of natural materials have shown changes made afterIncoming. Such as paper, iron, glass and plastic are artificial materials.5 kinds of natural materials in the life of common wood, stone, cotton, silk, linen, clay.5 kinds of common life in plastic, nylon, artificial materials, alloy, glass, paint.Write as much as possible in the use of paper packaging, printing, decoration, writing, wiping, dress.2. Different parts of an object are often made of a variety of materials of different characteristics. Tick from exergy3, is the Eastern Han Dynasty Cai Lun invented papermaking increase papermaking is one of the four great inventions of ancient china.The main raw material, the paper is 4 ^ k with wood waste paper, straw, cotton cloth and paper can also be old. In order to protect the information we want to note La woodSave paper. Saving paper is protecting wood resources.5, there are many interesting properties in the paperThe tensile strength of the same sheet, lengthwise and crosswise, is not firmequallyTransmittance showed fiber gap sizeThe absorbency of absorbent paper and the density of the paper fibersRelating to whether there is wax [capillarity effect]Fruit]6, all of the same color paper which have different share, strong degree of flash, water absorption and transparencyIn 7, the commonly used textile materialsCotton cloth soft breathable underwear can be observedWool wool soft warm winter cold can be used to increaseFilar thickSynthesisfibreNylon strong wear sportswear can increase.Nylon is the earliest synthesis in the worldLa fiberDistilled from petroleum.The 5 umbrella is made of nylonUnit fifth questions 1, love is a question starting point F is human nature of curiosity of scientific inquiry activities. We must continue to develop from love to questioningAsk questions.2, the text asked us many questions because f question is the starting point of scientific inquiry activities as much as possible.3, scientific problems in three aspects f they shareIn the 1 increase in careful observation of the activities ofIn the 2 question compared to some popular sayingIn the process of Science in the 3 increase in the production of small.4, Farber is the world's first study of insects in the natural environment and the life scientists Farber f f became watching insectsThe book of insects, the immortal book.5, Galileo in Leaning Tower of Pisa experimental f to overthrow the Aristotle "weight falling speed" point of view.6 goldfish, the most common cause of death is unknown and it is not f insatiably avaricious hunger. Goldfish not prey so it won't let f every grain of investmentFood for it.6, Cordyceps is also called the "golden grass" which bothinsects and grass at shape but not non grass insect f f belongs to algae. It doesn't winterDays into the summer into the grass insect F.In 7, f in the scientific inquiry to find the answer to the problem with share methodLa 1 in the library or on the Internet to find information, obtain indirect knowledgeIn his 2 shown by observation and experiment to find the answer, direct access to knowledge.8, in order to deepen the understanding and memory f we can make information card.9, we choose the research question F should raise the question of what1 more in the LA can through investigation, observation and experiment to find the answer to the question ofIn about 2 compared with the knowledge of science problemsIn 3 La mention the problem does not involve complicated knowledge.10, when temporarily not discussed the f we want to put it into the problem can be studied.11, I want a pair of is breathable and soft and comfortable shoes r you think should choose what material whyA share because strong r r soft soled. Cloth uppers r r because of sweat breathable cotton.12, scientists made the conclusion is correct we should not doubt F. Increase in the future13, scientists do what we simply can not do. In the La *14, in order to study their need f I can see what love is collecting the home study. In the La *15, as long as we make rational use of water resources f would not be facing water crisis. Increase in the future16, things far away with the naked eye can see f r with which of the following tools shown in the6 A. magnifier, B. telescope, C. microscope17, when we watched the ants will want to see more clearly in use which of the following tools exergy rateA. magnifier,B. telescope,C. microscopeThe first part, unit 1, lesson 1, we're all little scientists1, when you hear the word when you think of what science should be included2, Yuan Longping is an agricultural expert he is in the exergy research.In 3, exergy always makes us to explore many things, want to know why this is so, so.At the beginning of eighteenth Century 4, the scientists found that people in exergy vaccination can prevent smallpox.5, scientist Li Shizhen edited a medical encyclopedia in the exergy Madame Curie discovered ().6. The process of scientist's work is (,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,.7, the scientists found in the modified Watt exergy gravity is in exergy.In 1824 8, the British people will find a temporary memory exergy human ability of the people later according to the principle of making it into a movie.Unit 1, class second, be a young scientistSecret 1. little parrot standing up is in exergy.2. I know that scientists will, in exergy, exergy exergy and exergy in tobacco.Unit second lesson 1 searching for living objects1. I have seen the object in life, in exergy, exergy, exergy exergy in tobacco.2. we know that living things can be divided into exergy exergy exergy in in in.What are the common features of the 3. common features of a plant? Plant is in a certain environment the need moisture, sun growth,The air and the nutrition will the growth and development of offspring will have the process of life from birth to death.There are 4. common features of the life object is in exergy exergy exergy exergy in in in.Unit second lesson second plants on the campusOneThe campus plants in exergy exergy exergy exergy in in in.The 2. leaf arrangement in stems. There are mainly three kinds of exergy exergy exergy in in in.Unit third second small animals on campus1. different creatures such as the fish living in the ant lives in exergy exergy in in in in exergy environmentThe tiger lives in exergy in.2. snail is crawling with the love to eat it in the exergy exergy in.3. insects are divided into in exergy exergy in exergy in three parts. In the foot of ants have exergy exergy in theAntenna。
苏教版三年级上科学复习题汇总
苏教版三年级上科学综合复习题一、实验题(1)关于溶解问题的研究1.问题:溶解的快慢和哪些因素有关?2.我的猜测:。
3.我这样设计实验:(1).准备两个同样大小的杯子,一杯装热水,一杯装冷水,(2).分别倒入同样多的白糖或盐,(3)五分钟后观察两个杯子中白糖或盐的溶解情况。
4.实验记录4.实验结论:。
(2)关于溶解问题的研究1.问题:溶解的快慢和哪些因素有关?2.我的猜测:溶解的快慢和搅拌有关。
3.我这样设计实验:(1)准备两个同样大小的杯子,装同样多的热水(或冷水),(2)分别倒入一勺白糖,(3).一杯搅拌一杯不搅拌,(4).观察比较两个杯子里白糖的溶解情况。
4.实验结论:溶解的快慢和搅拌有关。
(3)我对纸的研究(4)我观察的物品所用材料的记录(5)我观察到的生活中水的毛细现象和表面张力现象(6)比较兔子和萝卜的相同之处和不同之处。
(7)比较人和黑猩猩相同之处和不同之处。
(8)“笔”的圆圈图的意义(9)请你用同样的方法把有生命的物体(笔、铅笔、自动铅笔、钢笔、圆珠笔)动物、植物与人之间的关系表示出来。
二、填空题1.当听到“科学”这个词的时候,我想到了(实验分析、医学研究、农业研究、珠峰测量、航天探索)2.我们做过的类似科学家的活动有:(观察蚂蚁、拆玩具、看小鸡出壳、看自己的影子、看电视机里有什么)等。
3.(好奇心)让我们有问不完的“为什么”,并驱使我们不断地寻找问题的答案。
.4、我知道的科学家的名字有:(居里夫人、李时珍、琴纳、袁隆平、牛顿、爱迪生)5、金属有容易传热、有金属光泽、有延展性、易导电的性质。
6、我们可以用过滤的方法使污染的水得到净化,用蒸发的方法使咸水变为淡水。
7.科学家工作的一般程序是(提出问题、作出猜测、寻找证据、得出结论)。
8.自然界的物体分为有生命的和没有生命的两大类,及生物和非生物。
自然界中具有生命的物体叫做生物。
生物包括动物、植物和微生物、真菌等。
9.动物分为:无脊椎动物和脊椎动物两大类。
苏教版三年级上册科学复习资料(每课归类,包括实验题)
苏教版小学科学三年级上册重点复习题第一单元《认识空气》空气占据空间吗?1.像粉笔、水一样,空气也需要(占据一定的空间)。
将纸巾揉成团放到杯底,然后将杯子(竖直向下)倒扣在水槽中,纸巾(没有)被浸湿,是因为(空气占据空间),所以水接触不到纸巾。
将气球放在塑料瓶中,并将气球口套在塑料瓶口,气球无法吹得很大,这也是因为瓶子中的(空气占据空间)。
2.空气可以被压缩,压缩空气具有(弹性)。
压缩空气在生活中的用途:(充气城堡、射钉枪、足球、喷水壶喷水、充气床垫)等。
3.空气和水都是我们生活中很重要的物质,它们有着一些相似之处,空气和水一样,都是没有颜色、没有气味、没有味道、没有固定的(形状),都是透明的,都占据一定的(空间),不同的是空气容易被(压缩),水很难被(压缩)。
4.实验名称:“水会漏下去吗”实验步骤:将漏斗插入小口瓶,用橡皮泥封住瓶口,然后快速向漏斗里倒水。
实验现象:水(不会)漏下去实验结论:因为空气可以占据(空间)5.实验名称:“挤压注射器”实验步骤:将注射器的活塞往后拉一段距离,并将针筒口顶住橡皮,用大一点的力推动活塞后再松手,为了看得更清楚,可以在针筒里放一小块(泡沫)实验现象:活塞会(弹回去)实验结论:因为压缩空气有(弹性)空气有质量吗?1.通过探究我们知道空气有质量,实验可以用(电子天平)帮助我们测量。
2.电子天平的使用方法:(1)将电子天平放在水平桌面上,打开电源;(2)按一下“归零”按钮,确保在称量之前显示数字为“0”。
(3)将要称的物体放在电子天平上,读取显示数字即可。
3.通过用电子天平测皮球(充气前)和(充气后)质量的变化,可以验证空气是否有质量。
4.17世纪,(伽利略)做实验验证了空气是有质量的。
后来,科学家用精确的实验测得:在接近地面处,1升空气的质量约为(1.29克),相当于(3)枚回形针的质量。
热空气和冷空气1.热空气要比相同体积的冷空气质量(轻),所以热空气会(向上升),冷空气会(下降)。
苏教版科学三年级上册复习题含答案
苏教版科学三年级上册复习题第一单元《认识空气》1.像粉笔、水一样,空气也占据一定的(空间)。
空气可以被(压缩),压缩空气具(有弹性)。
2.压缩空气在生活中的用途:(充气城堡)、(射钉枪)、(足球)、(喷水壶喷水)、(充气床垫)等。
3.通过用(电子天平)测皮球充气前和充气后质量的变化,可以验证空气是否(有质量)4.科学家用精确的实验测得:在接近地面处,(1升)空气的质量约为(1.29克),相当于(3枚)回形针的质量。
5.将卡纸剪成的纸蛇悬挂在点燃的蜡烛上方,可以观察到(纸蛇旋转 )。
6.(热空气)要比相同体积的(冷空气)(质量轻),所以热空气会向(上升),冷空气会(下降)。
7.将大塑料袋撑开后罩在点燃的蜡烛上,过一会儿松手,可以看到( 塑料袋上升 )。
8.制冷空调应挂在房间的( 上方 );取暖器应放在房间的( 下方 )。
9.空气总是(循环运动),空气的流动形成了(风)。
10.生活中制造风的方法有:(扇扇子)、(用吹风机吹头发),(吹风车)、(挤袋子)等都可以。
第二单元《研究土壤》1.土壤是覆盖在地球表面的一层(疏松物质),它具有一定的(肥力),能够提供植物生长所需要的(营养物质)。
2.常见的三类土壤是(沙质土)(黏质土)和(壤土)。
3.挖来的土壤里有(蚂蚁)、(小石子)、(枯树叶)、(沙子)等。
4.把土块放入水中,会看到有气泡从土壤中冒出,搅拌静止后发现沉淀物分层,上层的物质是(黏土),下层的物质是(沙粒)。
5.人们根据三种颗粒含量的不同,将土壤分为三类:沙粒含量较多的叫作(沙质土)黏粒含量较多的叫作(黏质土),而沙粒、粉粒、黏粒三者含量差不多的叫作(壤土)。
6.(沙质土)渗水性、透气性最好,保水性、保肥能力最差,适宜生长的植物有芝麻、花生等。
(黏质土)保水性、保肥能力最好,渗水性、透气性最差,适宜生长的植物有荷花、芦苇等。
(壤土)保水性、保肥能力、渗水性、透气性都较好,适宜生长的植物有蚕豆、苹果树等。
苏教版小学科学三年级上册期末重点复习资料题集及答案
苏教版三年级科学上册复习资料第一单元我们都是科学家▲1、好奇心总是让我们去探究许多事物,想知道为什么会是这样、那样的,并驱使我们不断寻找问题的答案。
我们这些经历其实和科学家的工作十分相似。
▲2、科学家工作[或者说科学研究]经历的四个阶段是:提出问题、作出猜测、寻找证据、得出结论。
我们要进行科学研究首先要学会提出问题。
▲3、在生活中处处有科学,科学就是提出问题,并想办法解决这些问题。
科学家在提出问题后就要想办法把问题解决了。
科学研究就是提出问题并想办法寻找答案的过程。
▲4、爱德华·琴纳是一位英国乡村医生,他是一位发现接种牛痘预防天花的科学家。
5、牛会生一种类似天花的病,这是就牛痘。
▲6、1824年英国人罗杰特做了一个“动起来小人”的有趣的活动,并对这一活动作出了自己的解释,后来这一解释被人们接受,电影就是根据他解释的原理制作的。
英国医生罗杰特发现了人眼具有“暂时记忆能力”7、我知道的科学家有:袁隆平:培育出杂交水稻新品种,他被誉为“杂交水稻之父”居里夫人:发现放射性元素镭爱迪生:发明电灯,被称为“发明大王”李时珍:写出《本草纲目》8、我知道的科学研究有:农业研究、医学研究、航天探索。
▲9、纸鹦鹉“站”起来的秘密是上轻下重,保持左右平衡。
10、重心越低,物体越平稳。
11、如果一个物体(C)就不容易倒。
A上重下轻 B放在矮处 C下轻下重 D上下一样重12、小丑为什么能在细线上表演杂技?这是()A 、解决问题 B、作出猜测 C、提出问题13、走刚丝的杂技演员手里拿着长长的竿子是为了(B)A挡风B保持平衡14、观察蚂蚁也是科学研究。
(√)15、科学只是科学家有关。
(×)16、科学是非常高深的问题,我们小学生不需要了解。
(×)17、想办法保持平衡能让各种物品站在你的指尖上。
(√)18、只要我们细心观察,从探究身边的问题入手,就可以进入科学的世界,成为一名小科学家。
(√)19、只要是从事科学研究工作的人,我们都称他们为科学家。
苏教版三年级《科学》上册第三单元、课重点复习题
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•11、水是白色 的。…………………… ………………………… ……… ( × )
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•12、辨别液体时,都 要先尝一 尝。…………………… ……………… ( × )
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•13、不了解的物体,我 们不能随便闻或 尝。…………………… ………( √ )
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•14、能流动是水的基 本性质之 一。…………………… ……………… ( √ )
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•7、没有水,骆驼也会 一直生活下 去。…………………… ………… ( × )
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•8、地球上的水永远都 用不完,所以我们可以 随便使用。……… (×)
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•9、水的颜色有蓝色、 绿色和红 色。…………………… …………… ( × )
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• 10、水的味道稍微有点 甜。……………………… …………………… (×)
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•15、水流动的快慢与 水滴的大小有 关。…………………… ………… ( √ )
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• 16、水和玻璃一样是透明 的。……………………… …………………( √ ) •
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•17、用手摸不能够识 别一种液 体。…………………… ……………… ( √ )
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• 8、一般情况下,人体 (65%)是水,一个鸡蛋 中含有(76%)的水,一 条鱼(85%)是水,蔬菜 中(90%)是水。 •
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•9、水是一种(没有颜 色)、(没有气味)、 (没有味道)、(透明) 的液体。
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•10、像水这样没有固 定的(形状),会(流 动)的物体叫(液体)。 •
苏教版三年级科学上册复习资料
第一单元1.科学是……1.当听到“科学”这个词的时候,我想到了农业研究、实验分析、医学研究、珠峰测量、航天探索。
2.科学不只是和科学家有关系,和我们也有关系。
3.好奇心总是让我们去探索许多事物,其实这些经历与科学家的工作十分相似。
4.一位乡村医生琴纳发现了接种牛痘可预防天花的办法。
5.袁隆平被称为“杂交水稻之父”。
6.科学家瓦特改良了蒸汽机,万有引力的发现者是牛顿。
7.居里夫人发现了镭,李时珍编写了《本草纲目》。
8.英国医生罗杰特发现了人眼具有视觉暂留功能,后来人们根据这个原理制作了电影。
9.中国第一个飞上太空的宇航员是:杨利伟。
10.我知道的科学家的名字有:琴纳、爱迪生、居里夫人、李时珍、袁隆平、牛顿等。
11.“会动小人”谜底的揭开,帮助我们人类造出了电影机。
12.科学家的工作经历那几个阶段?提出问题-作出猜测-寻找证据-得出结论_2.做一名小科学家1.我们做过的类似科学探究的经历有:看小鸡出壳、看自己的影子、观察蚂蚁、拆玩具、看电视机“肚子”里有什么等。
2.科学就是把问题提出来后,要想办法把问题解决的过程。
3.纸鹦鹉站起来的秘密是:保持平衡。
4.重心越低,物体越平稳。
5.重物加在物体的底部,物体可以保持平衡.6.物体重心越低就不容易倒。
7.做纸鹦鹉实验需要的器材有红色硬纸、回形针、剪刀、铅笔、彩色笔。
第二单元1.寻找有生命的物体1.自然界中的物体无外乎有生命的和没有生命的两大类。
有生命的物体叫做生物,没有生命的物体叫做非生物。
2.我们在校园里寻找有生命的物体时,尽量不要惊动和伤害有生命的物体。
3.在寻找有生命的物体时,对不认识或叫不出名字的可以把它画下来。
4.有生命的物体的共同特征是:都要吃东西、都需要呼吸、都能繁殖、都能长大、都会死亡、都对刺激有反应。
5.课外观察要注意:随时记录、注意安全、尽量不要惊动或伤害有生命的物体、到校外要和成人打招呼或要求陪同。
2.校园里的植物1.植物的共同特征是:都需要水、空气、阳光、都会长大、都会呼吸、都有根、茎、叶、花等。
苏教版三年级科学上册总复习题
苏教版三年级科学(上册)总复习题一、解释1、科学:科学就是提出问题并想办法寻找答案的过程。
2、生物:有生命的物体就是生物。
3、毛细现象:水沿着有孔隙的材料往上“爬”或向四周扩散的现象,叫做毛细现象。
4、水的表面张力:水的表面有一种互相拉着的力,使其表面尽量缩小,这种力就叫做水的表面张力。
5、溶解:一种物质均匀地稳定地分散在另一种物质中形成溶液的过程,叫做溶解。
二、填空1、琴纳发现了接种牛痘预防天花的办法。
2、科学家的探究步骤:提出问题→作出猜测→寻找证据→得出结论。
3、李时珍编写药物巨著《本草纲目》。
4、居里夫人证实了镭元素的存有。
5、1824年,英国人罗杰特发现了人眼具有“暂时记忆水平”,后来,电影就是根据罗杰特的解释原理制作的。
6、物体上轻下重就不容易倒。
保持物体的重心,物体就会平衡。
7、物体包括非生物和生物两绝大部分;生物包括植物和动物两个部分。
人属于动物里最高等的一个部分。
新课标第一网8、植物都长在水分充足、有阳光的地方。
(即植物生长环境的特点)9、鱼的身体分为头、胸、腹、尾四个部分,体表有鳞,用鳃呼吸,用鳍游泳。
10、动物分为哺乳类、鸟类、鱼类、爬行类、昆虫类、两栖类这六大类。
11、笔包括铅笔、钢笔、圆珠笔等,铅笔包括自动铅笔等;生物包括植物、动物,动物包括人等。
12、水在人体、动植物体内所占比例:人体65%是水;鸡蛋76%是水,鱼85%是水,蔬菜90%是水。
13、理解物体常用的方法有:用眼睛看、用鼻子闻、用舌头尝、用手摸等。
14、水的特点:无色、无气味、无味道,透明,没有一定的形状,能流动,有毛细现象,表面有张力、有压力、有浮力,能溶解很多物质。
15、地球上的水主要分布在海洋、河流、湖泊、冰川、地下暗河等。
16、地球上水的总量中,海洋和咸水湖中的水占97%,淡水只占3%。
地球上的淡水中,水蒸气等占0.66%,河流、湖泊占0.34%,深层地下水占11%,浅层地下水占12%,以上共占24%;冰川占76%。