Thursday, August 28, 2008

Investigate 3 Which Objects Will Float?

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After observing the objects float or sink, what is your hypothesis for the question, "Why do some things float while others sink?" Look carefully at the objects that floated or sunk to see if you can come up with a logical reason.

57 comments:

Emily said...

I think some things float because it is light. Maybe it floats because it maybe hollow. The temperature may effect it to. The object may also have a hole in it.
I think some things sink because of the weight. Also I think it will float because it may be a solid and no holes or it being hollow.

blake said...

While some float because some of them are heavy while the another one is not heavy.

vanessa said...

some objects my sink beacuse there are they are heavy and also beacuse
there mettle. some things float beacuse they are light and they might be hallow maybe they have holes.

shayla said...

Some things float and some things sink because like the large wood would float because the water makes it float.A bike would sink because it is heavy. Turtles float,large rocks sink.

Nikita said...

I think some will float because some are light and some heavy things can.I think some sink because there to heavy but like a eraser is light it will sink so some light things will sink

Ana S said...

Some things floated because they are light while the others sank because they are heavy.

maria said...

I think that the fishing bolt will sink because it is heavy ,and i think that the wood bead will float because it is light. I also think that the clay will float because it is light and even though some clays are made out of soil it will still sink

Cesar said...

I used to think think it was about the weight but then I went to river I saw a log floating on the river's surface so then I realized that it was about what it was made of. Al tho the big polyethylene floated it was the forth heaviest my hypothesis was wrong on that one.

Marlene said...

MY Hypothesis is Did the items float or sink. Some of the items floated because some were light and the others sank because they might be heavy or they could have a hole.My logical reason is they were heavy and light.

sarah .m. said...

Hello I think that some things float wen the other sinks because some are heavy,not light,or not hollow or light,not heavy,or hollow.

Jesus said...

I think some of the marbles will sink the clay and if the clay will hold 15 marbles and if 16 marbles I think it will sink.

Vincent said...

I think that things with air will float while things that are heavy with no air sink.If u put a floaty in water and push it down it will come back up but with no air it will stay and sink.

Yesenia said...

It will sink if we put marbles in it won,t hold that a lot of marbles because it not way a lot .

Ana G said...

After observing the objects float or sink,I got all right my hypothesis except two question .I thought that the was going to float but it sink . I thought that the fishing boll was going to sink but it was floating .

SarahF. said...

The reason why I think some things float, and some things sink is because it depends what kind of shape and how much it weighs .

Yengshi said...

The aluminum nut sink.The wooden bead float.The glass marble sink.The fishing bobber float.The nylon bolt sink.The large acrylic,large aluminum ,large polyethelen sink.The large wooden cylinder float.The clay sink.The small acrylic,small aluminum,small polyethelen sink.The wooden cylinder float.

Kenzie said...

i think a foam cup will float because it is very light.i think my boots will sink.....because they are very heavy!

Tyler said...

Some things float because they are light.Others float because they are hollow . some sink because they are heavy .

Kenneth said...

Because some things are heavy so they sink and some things float because they are light and thats why they float

Suzanne said...

Some things float because they are light or because of what it is made of. Some things sink because it is too heavy for the water to hold it up or it is because of what it is made of.

tyler said...

The risen why some things flout is because some things are lighter thin others. The risen why some things sink is because some things are heaver.

alec said...

The resin why some things flout and some thing sink because some things are heavy and some things are light. And may be the weight of an may be thats why some things flout and sink.

Karla said...

Well there was lots of stuff that sunk and floated there was big ones and there was small ones.Sometimes things float because they are not heavy and some of them sink because they are heavy.It depends how much things weigh and sometimes it depends on if it is heavy or it is not.

jose s said...

I think somethings sunk because the thing they are made out.

elizabeth said...

When I was observing the objects that floated were light and the things that sinked were heavy.When I saw the medal stuff sink it didn't float because it was heavy but,cans float and it is made out of medal and it float because it is light.

april said...

I think if a object is hollow it will
probably float or sink.If it is solid it will probably sink or float.That is what I think about floating and sinking with heavy or light.

amy a said...

I think some floated because of the weigh .I think it sunk because of size or the shape or maybe it's depends on how tall it is.

Abby said...

I think that some things floated while others sank because some things were heavier than others.Like the aluminum nut was heavier than the wooden bead and the aluminum nut sank and the wooden bead floated.I also think that some things floated while others sank because some things had holes and others didn't.Like the aluminum nut had a hole and it sank and the small polyethelen cylinder floated.

cole said...

I think some things are made of different material and some are heavy and light.

Zeke said...

The reason why some things sink might be because they are heavy the reason why some things might float be because something is light

Emalyn said...

Some thing's floated because they were light and some were heavy. The thing's we had were aluminum nut wood bead glass marble fishing bobber nylon bolt Large acralic cylinder Large alumanum cylinder Large polyethelen cylinder Large wood cylinder clay small acralic small aluminum small polyethelen small cylinder's.

audy said...

Some thing float because so you could
test them and do projects with them.
Some thing sink because so you could
see if they sink or float.

cruz said...

I think some think can sink because it is heavy some are not because they have some different stof in them.

JOSE C. said...

I think that some objects because some objects are havy than others

wendy p said...

I comment.mo derration has been enaled.all comments must be approveedbytthe blog anutor

Samantha said...

Some things floated because of their
weight and because of what their made of.Some objects sunk down because they just had air and what their made of on the outside.

Anna said...

Things sink and float because they are light and some sink because they are heavy.There were some things that were big and some were small.

Parker said...

My hypothesis is that some things float because they are light or they have air in them.

tristin said...

i think some thing sink and some thing float because of the density lvl .

seth said...

I think that if an item or person is heavier than water, it will sink. If an item or person has less weight than water, it will float.

Alex m said...

One of the things that I now is that if it has a big air hole in inside the ob get it will float.

Slendy said...

I know is that most of the time
heavy objects sink.And light objects
float.But if it holds air it will float even if its heavy.

Nathan said...

I was right on all of my hypothasises were right

Rosa said...

All must the thinks sink because they were not that mush heavy as the other staff .

Rubecca said...

I think things sink because when objects weigh more than water the water cant hold the object.If the object weighs more than water the water can hold the object.

Saul said...

I think some things float or sink because some are lighter or heaver then others like the nut was heavy
then the bead.

kyle said...

If it floats it is full of air,if it sinks it doesn't have air.

Smantie said...

The fishing bobber did float . The small wood cylinder.

Kayla said...

Well I know that various item float and sink like an aluminum cylinder it sink because the aluminum cylinder was to heavy.

Michael said...

I think the reason some object float and sink.Some objects float because they are lighter than water.Some objects sink because they are heavier than water.

Danny said...

Some are light and some hight. Some are stronger some are weak. Some are fat and some are scine.

sergio said...

The bobber will float because it is light and it carry s air.

Natalia said...

Some thinks float because there made
of plastic others don't because there made of metal.

Maria said...

It problem and it sink and some float

Emily said...

I know now! Its the density.

Emily said...

I did not think you were going to put that on your blog, Mr.c!

baseball coach said...

Has anyone tried to weigh the water vs. the weight of the object that you are trying to float? Most barges are built of steel but they float. I wonder how much surface area this takes? That makes me think displacement. hummm... You kids better play ball next spring!!!