Submarine SMASH Day Reflection

We are in the yellow submarine~ yellow submarine~
We need to make a glass that you can see up on the ocean in the yellow submarine.
My mission is to think of the idea that we can seat under the table but can see inside the box on the table .
We modify and design all the time, we test whether can see in the box or not, every we change the angel or switch the place of mirror. If we can see the box but not clear or the angle was wrong, we'll modify to the right way.
If the mirror we put didn't help us to see more, we might take it off and design the another part is useful to us.

Liquid Column

I think control some objects sink some object floated also some object floated in middle of factor is "density".Which bigger then liquid will sink ,lighter then liquid will float ,same with liquid will float in the middle.
I don't think the "mixed" one will separate by Monday.(I guess)

Is air matter?

I think air is a matter cause matter mean anything that has mass and takes up space.

Air is the one of the states of matter - gases. A gas dose not have a definite shape. 

In the way it is like a liquid but on the other hand it is unlike,a gas dose not take up 

a definite amount of space. Because the particles of matter move about freely. Each 

particle of space is big but if you pressurize it and the volume will change it.