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...
Someobjectscanfloat.Someobjectscansink. 5.实验改变物体大小轻重沉浮不变 Activity3 T:Wealreadyknowwoodcanfloatinwater,andwehavethreedifferent sizeofwood.Thesmallone,themediumone,thelargeone.Ifweputit inwater.Whatwillhappen? S:学生猜测:Ithink___floats/sinks T:Ohyouhavedifferentideas,whatshouldwedo?
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,...
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)?
Buoyancy(浮力): What makes a boat float? What are the characteristics of water that help a boat to float? How do boat design and construction make it suitable for sea voyage? This educational program focuses on the science of buoyancy and uses construction skills to judge the students’ abili...
underwater.” Therealizationthatthisisapreciousland,to berespectedbyhumans,wasoneofthebiggest thingsthathithometoGinni. 8.Whichofthefollowingbestexplains“takethe plunge”underlinedinParagraph2? A.Trychallengingthings. B.Takeadegree. C.Bringbacklostmemories. D.Sticktoapromise. 9.WhatmadeGinnidecideonthe...
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Objects denser than water sink when placed in it. 4 Soak Process of becoming saturated. Let the stained shirt soak in the detergent solution. 4 Sink Critical in marine design. Submarines are designed to sink and float controlledly. 4 Soak Enhances qualities or cleans. Soaking fruits in water...