How to Make a Solar Water Purifier for Science Project

School projects demand various models and devices to be made. This could be for festivals, art or science activity. Making Solar Water Purifier is one such science project kids are asked to make. The following DIY science project of solar water purifier is a simple activity made with materials easily available at home. Kids can easily make it and present it in school as part of a DIY project or even as a activity to understand how solar power works!

Material for making a Solar Water Purifier

Large bowl - 1
Glass cup - 1, shorter than the bowl
Cling wrap / plastic wrap
Cellophane tape
Water - 2 glasses
Salt - 1 tsp
Spoon
Coin or a pebble

Method for making a Solar Water Purifier

1

Pour two glasses of water in a large bowl and add salt to it. Allow the salt to dissolve completely by stirring with a spoon.

2

Place the small glass cup in the center of bowl. Make sure that the glass cup is taller than the water level in the bowl.

3

Cover the bowl with the cling wrap completely and seal the edges with a cellophane tape. See that the edges are tightly sealed.

4

Place the coin or the pebble right on the top of the cling wrap exactly over the small cup.

5

Place this bowl in area of direct sunlight, near a window or on a balcony for several hours.

6

Once done you will find that water is collected in the glass cup. Open the wrap and taste the water! This process of purification can also be tried with sea water as a part of science project.

How this works?

The solar purifier works with the concept of evaporation and condensation. When the salt water is placed in the sun, it gets evaporated. Thus due to evaporation the water converts into vapors and salt deposits back in the bowl. But these vapors when rise to move out of the bowl, get trapped due to the cling film and condense into water droplets. These water droplets gather towards the weight, i.e. the pebble or the stone and gall and get collected in the glass cup.

A Minor Bird - Poem by Robert Frost

A Minor Bird

         - By Robert Frost

I have wished a bird would fly away,

And not sing by my house all day;

Have clapped my hands at him from the door

When it seemed as if I could bear no more.

The fault must partly have been in me.

The bird was not to blame for his key.

And of course there must be something wrong

In wanting to silence any song.

How to Make a Simple Solar Oven at Home - DIY Science Projects for Kids

Making a solar oven with a pizza box is one of the simplest way of trying your hands on creating a DIY Science project of simple solar oven. It is a fun experiment which can help your kids enjoy summers by making and testing the solar oven out on a hot day! The simple solar oven is made with materials which are easily available at home and the kids can easily make them by following instructions and being careful with sciessors.

Materials for making a Simple Solar Oven

Large Pizza box - 1, if not available than a cardboard box would do!
Pencil
Big Ruler
Aluminium foil
Chart paper (black color)
Cling wrap / plastic wrap
Transparent Plastic bag
Scissors

Method for making a Simple Solar Oven

1

Draw a square on the flap of the pizza box by leaving at least an inch of space from the edges on the sides of the flap.

2

With the help of the scissor or a cutter cut along the three sides of the square leaving the top side folded along the uncut lines. With help of glue, line the folded flap with an aluminium foil. This aluminium foil would work as a reflector. You could also line the aluminium foil and fold the edges which could then be sealed with cellophane tape.

3

Place and line the insides of the pizza box with an aluminium foil, leaving no gaps throughout. Once done, cover it with a chart paper.

4

Place on this a transparent plastic bag on which you could place the plate in which food can be warmed.

5

Cover the window which was made by cutting the square on the top of the pizza box with two layers of the cling wrap.

6

Place the simple solar oven in a place which receives direct sunlight. Adjust the reflected such that maximum sunlight would reflect off the foil.

7

Test you simple solar oven by trying to melt butter or cheese on a bread slice. Once successful try other foods. The process of using this simple solar oven takes a longer time to cook and hence some patience is required on your part! But always remember that this way of cooking is about using a clean source of renewable energy and hence one should be proud of the results!

How this works?

The energy that is radiated from the sun is harvested by the solar oven to cook food. The aluminium foil lined on the flap works as a reflector and reflects the rays of sun directly on the are where food is placed. The black chart paper absorbs the heat and the plastic sheet placed beneath the food plate helps to retain the heat and cook.

Fire And Ice - Poem by Robert Frost

Fire And Ice

                - By Robert Frost

  Some say the world will end in fire,

  Some say in ice.

  From what I've tasted of desire

  I hold with those who favor fire.

  But if it had to perish twice,

  I think I know enough of hate

  To know that for destruction ice

  Is also great

  And would suffice.

The Blueberries - Poem by Robert Frost

Blueberries

      - by Robert Frost

“You ought to have seen what I saw on my way  

To the village, through Mortenson’s pasture to-day:  

Blueberries as big as the end of your thumb,  

Real sky-blue, and heavy, and ready to drum  

In the cavernous pail of the first one to come!          

And all ripe together, not some of them green  

And some of them ripe! You ought to have seen!”  

  

“I don’t know what part of the pasture you mean.”  

  

“You know where they cut off the woods—let me see—  

It was two years ago—or no!—can it be          

No longer than that?—and the following fall  

The fire ran and burned it all up but the wall.”  

  

“Why, there hasn’t been time for the bushes to grow.  

That’s always the way with the blueberries, though:  

There may not have been the ghost of a sign          

Of them anywhere under the shade of the pine,  

But get the pine out of the way, you may burn  

The pasture all over until not a fern  

Or grass-blade is left, not to mention a stick,  

And presto, they’re up all around you as thick          

And hard to explain as a conjuror’s trick.”  

  

“It must be on charcoal they fatten their fruit.  

I taste in them sometimes the flavour of soot.  

And after all really they’re ebony skinned:  

The blue’s but a mist from the breath of the wind,          

A tarnish that goes at a touch of the hand,  

And less than the tan with which pickers are tanned.”  

  

“Does Mortenson know what he has, do you think?”  

  

“He may and not care and so leave the chewink  

To gather them for him—you know what he is.          

He won’t make the fact that they’re rightfully his  

An excuse for keeping us other folk out.”  

  

“I wonder you didn’t see Loren about.”  

  

“The best of it was that I did. Do you know,  

I was just getting through what the field had to show          

And over the wall and into the road,  

When who should come by, with a democrat-load  

Of all the young chattering Lorens alive,  

But Loren, the fatherly, out for a drive.”  

  

“He saw you, then? What did he do? Did he frown?”          

  

“He just kept nodding his head up and down.  

You know how politely he always goes by.  

But he thought a big thought—I could tell by his eye—  

Which being expressed, might be this in effect:  

‘I have left those there berries, I shrewdly suspect,          

To ripen too long. I am greatly to blame.'"  

  

“He’s a thriftier person than some I could name.”  

  

“He seems to be thrifty; and hasn’t he need,  

With the mouths of all those young Lorens to feed?  

He has brought them all up on wild berries, they say,          

Like birds. They store a great many away.  

They eat them the year round, and those they don’t eat  

They sell in the store and buy shoes for their feet.”  

  

“Who cares what they say? It’s a nice way to live,  

Just taking what Nature is willing to give,          

Not forcing her hand with harrow and plow.”  

  

“I wish you had seen his perpetual bow—  

And the air of the youngsters! Not one of them turned,  

And they looked so solemn-absurdly concerned.”  

  

“I wish I knew half what the flock of them know          

Of where all the berries and other things grow,  

Cranberries in bogs and raspberries on top  

Of the boulder-strewn mountain, and when they will crop.  

I met them one day and each had a flower  

Stuck into his berries as fresh as a shower;          

Some strange kind—they told me it hadn’t a name.”  

  

“I’ve told you how once not long after we came,  

I almost provoked poor Loren to mirth  

By going to him of all people on earth  

To ask if he knew any fruit to be had          

For the picking. The rascal, he said he’d be glad  

To tell if he knew. But the year had been bad.  

There had been some berries—but those were all gone.  

He didn’t say where they had been. He went on:  

‘I’m sure—I’m sure’—as polite as could be.          

He spoke to his wife in the door, ‘Let me see,  

Mame, we don’t know any good berrying place?'  

It was all he could do to keep a straight face.  

  

“If he thinks all the fruit that grows wild is for him,  

He’ll find he’s mistaken. See here, for a whim,          

We’ll pick in the Mortensons’ pasture this year.  

We’ll go in the morning, that is, if it’s clear,  

And the sun shines out warm: the vines must be wet.  

It’s so long since I picked I almost forget  

How we used to pick berries: we took one look round,          

Then sank out of sight like trolls underground,  

And saw nothing more of each other, or heard,  

Unless when you said I was keeping a bird  

Away from its nest, and I said it was you.  

‘Well, one of us is.' For complaining it flew          

Around and around us. And then for a while  

We picked, till I feared you had wandered a mile,  

And I thought I had lost you. I lifted a shout  

Too loud for the distance you were, it turned out,  

For when you made answer, your voice was as low          

As talking—you stood up beside me, you know.”  

  

“We sha’n’t have the place to ourselves to enjoy—  

Not likely, when all the young Lorens deploy.  

They’ll be there to-morrow, or even to-night.  

They won’t be too friendly—they may be polite—          

To people they look on as having no right  

To pick where they’re picking. But we won’t complain.  

You ought to have seen how it looked in the rain,  

The fruit mixed with water in layers of leaves,  

Like two kinds of jewels, a vision for thieves.”

Spoils Of The Dead - Poem by Robert Frost

Spoils Of The Dead  

      - by Robert Frost

Two fairies it was 

  On a still summer day 

    Came forth in the woods 

    With the flowers to play. 

    The flowers they plucked 

    They cast on the ground 

    For others, and those 

    For still others they found. 

    Flower-guided it was 

    That they came as they ran 

    On something that lay 

    In the shape of a man. 

    The snow must have made 

    The feathery bed 

    When this one fell 

    On the sleep of the dead. 

    But the snow was gone 

    A long time ago, 

    And the body he wore 

    Nigh gone with the snow. 

    The fairies drew near 

    And keenly espied 

    A ring on his hand 

    And a chain at his side. 

    They knelt in the leaves 

    And eerily played 

    With the glittering things, 

    And were not afraid. 

    And when they went home 

    To hide in their burrow, 

    They took them along 

    To play with to-morrow. 

    When you came on death, 

    Did you not come flower-guided 

    Like the elves in the wood? 

    I remember that I did. 

    But I recognised death 

    With sorrow and dread, 

    And I hated and hate 

    The spoils of the dead.

Wind And Window Flower - Poem by Robert Frost

Wind And Window Flower

     - By Robert Frost

Lovers, forget your love, 

    And list to the love of these, 

    She a window flower, 

    And he a winter breeze. 

    When the frosty window veil 

    Was melted down at noon, 

    And the cagèd yellow bird 

    Hung over her in tune.

    He marked her through the pane, 

    He could not help but mark, 

    And only passed her by, 

    To come again at dark. 

    He was a winter wind, 

    Concerned with ice and snow, 

    Dead weeds and unmated birds, 

    And little of love could know. 

    But he sighed upon the sill, 

    He gave the sash a shake, 

    As witness all within 

    Who lay that night awake. 

    Perchance he half prevailed 

    To win her for the flight 

    From the firelit looking-glass 

    And warm stove-window light. 

    But the flower leaned aside 

    And thought of naught to say, 

    And morning found the breeze 

    A hundred miles away.