A. The object sank in the water. B. The object floated on the water. C. The object disappeared in the water. D. The object was stuck in the water. 相关知识点: 试题来源: 解析 B。题干是物体开始在水上漂浮。A 选项表示物体沉入水中;B 选项表示物体漂浮在水上;C 选项表示物体在水中消失了...
The purple one ,the green one, the yellow one are float, only the red one is sink. Only when the object touch the bottom, thats the sink.3.预测十种物体在水中的沉浮Activity 1:10种物体的沉浮实验T: There are 10 objects for each group, look at the screen, do you know them?(依次介绍...
Jellyfish can float in the water. What helps them do this? A. Their tentacles B. Their light body C. Their strong muscles D. Their sharp teeth 相关知识点: 试题来源: 解析 B。解析:水母能在水中漂浮是因为它们身体轻。选项 A 触手不是漂浮的原因;选项 C 强壮的肌肉不对;选项 D 它们没有牙齿...
Then pour the same amount of oil and water.②Wait for a minute to let the liquids stop moving around. Notice that the liquids separate into three layers.③Drop the small objects into the jar.What happened?The objects float on different layers.Which layer depends on how dense(密度大的)the...
float(浮)sink(沉)Ducksandboatsfloat.Stonessink.Why?Whichobjectsfloat?Whichobjectssink?Whatdoyouthink?Writethenumbers.Ithinkpencilsfloat.Why?Ithinktheseobjectsfloat.Ithinktheseobjectssink.1 Puttheobjectsinwater.Dotheyfloatorsink?Writethenumbers.Theseobjectsfloat.1,3,4,5,6,8,9 Theseobjectssink.2,7,...
交流汇报6.做实验证明有的轻的物体会沉,有的重的物体会浮:Comparethelogandthetinystone.SomelightobjectsfloatSomeheavyobjectssink总结Todayweknow:Someobjectscanfloat.Someobjectscansink.Somelightobjectssink.Someheavyobjectsfloat.7.拓展:T:Soyouknowmaterialdecidethefloatingandsinking.Whatelsedoyouwanttoknow?
5. Why can returning whales to the water be good for other ocean life? 2. 选择意思恰当的单词或词组来完成下列句子。 1. Wow! There are more than 30 whales in this ___. pod blow hole carcass skeleton 2. They carried out a ___ examination to find out the cause of death. conservation...
How do gas laws make blimps float? What determines the color of an object? What phenomenon makes objects appear to bend in water? How do the physical properties of the parts of a pencil affect how the pencil is used (matter/density & buoyancy/physical properties)?
underwater.” Therealizationthatthisisapreciousland,to berespectedbyhumans,wasoneofthebiggest thingsthathithometoGinni. 8.Whichofthefollowingbestexplains“takethe plunge”underlinedinParagraph2? A.Trychallengingthings. B.Takeadegree. C.Bringbacklostmemories. D.Sticktoapromise. 9.WhatmadeGinnidecideonthe...
In an impeller, a rotating disc flings water at a comb-like diffuser. The diffuser breaks the water into fine droplets that float into the air. You normally see these droplets as a cool fog exiting the humidifier. This is one of two types of cool mist humidifiers. ...