table bench height image
Lemony.xox
What are science variables? I only know what controlled variables are.
I have this experiment where we need to find out how tempreture effect the time it taken to dissolve a table spoon of jelly crystals.
I need to find the variables.
For the controlled variable i need 4 and i have three of them. What could be my last one.
I have:
The amount of water, the amount of Jelly Crystals, The flavour of Jelly Crystal,
What is a thrid one?
Answer
1)Amount of stirring. ( Must be the same each time )
2)Bowl in which the mixing is done. ( the same bowl each time )
3)Temperature of the surroundings. ( the surrounding temperature will influence heat flow into and out of the dissolving jelly. It must be kept constant for each reading. )
And your first 2 ( the most important ones). I'd suggest dropping the flavour of jelly crystal, and my number 3, unless you are going to give all 6 variables.
It is usually a good idea to give more variables than are asked for, but not to give wildly silly ones ( like time of day, or height of kitchen bench ....). I'm not sure about flavour if crystal - I would actually try out a couple and see if it really needs controlling for - that would show good thinking and keenness.
1)Amount of stirring. ( Must be the same each time )
2)Bowl in which the mixing is done. ( the same bowl each time )
3)Temperature of the surroundings. ( the surrounding temperature will influence heat flow into and out of the dissolving jelly. It must be kept constant for each reading. )
And your first 2 ( the most important ones). I'd suggest dropping the flavour of jelly crystal, and my number 3, unless you are going to give all 6 variables.
It is usually a good idea to give more variables than are asked for, but not to give wildly silly ones ( like time of day, or height of kitchen bench ....). I'm not sure about flavour if crystal - I would actually try out a couple and see if it really needs controlling for - that would show good thinking and keenness.
what material should be used for a work bench?
XX123
I'm building a work/hobby bench and am looking for some recommendations on what material I should consider that will provide a durable /low maintance top.
Answer
The top surface should be durable yet easy to use. If you sit down to work, the height should be the same as your kitchen table; about 30". If you stand up to work, I use 42" since I am tall, but if you are short (Height challenged) you may like something around 36" like your kitchen cabinet bases. I do jewelry avd stained glass. For jewelry, I sit and for stained glass, I stand. You might consider a combination bench with two heights.
I use white-painted homosote glued and screwed onto heavy plywood on a two by four frame for my bench tops. I paint my walls and ceilings white too. It increases your ability to see. If you need clarification, send me an e-mail.
The top surface should be durable yet easy to use. If you sit down to work, the height should be the same as your kitchen table; about 30". If you stand up to work, I use 42" since I am tall, but if you are short (Height challenged) you may like something around 36" like your kitchen cabinet bases. I do jewelry avd stained glass. For jewelry, I sit and for stained glass, I stand. You might consider a combination bench with two heights.
I use white-painted homosote glued and screwed onto heavy plywood on a two by four frame for my bench tops. I paint my walls and ceilings white too. It increases your ability to see. If you need clarification, send me an e-mail.
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