Make a Model Lung

 

The Lungs are part of the respiratory system. To breathe you need more than just your lungs, there are several different organs and tissues working together every day.

The first thing that we are going to do is cut the bottom off your plastic bottle. You might need an adult to help you with this part. This is going to represent your chest

We are then going to get one of the balloons and tie a knot. We are then going to cut the end off the balloon and stretch it over the bottom of the plastic bottle and tape this in place so that no air can escape. This is going to represent your diaphragm. 

We are now going to get your second balloon and tape this to your straw. Make sure that you tape it securely so that no air can escape. We are now going to push the balloon into the plastic bottle and seal the top around the straw using some sticky tac. The balloon will represent one of your lungs and the straw will represent your windpipe. 

Now if you pull on the balloon on the bottom of the bottle you should see that the balloon expands and when you let go it deflates. This is a similar process to what happens when you breathe. 

 What is happening is that as you pull the balloon at the bottom, it creates more space in the bottle, so air enters through the straw and the balloon inflates to fill the space. As you let go the amount of space for air decreases and so air is pushed out through the straw and the balloon deflates. 

When we breathe in, our diaphragm moves down, creating more space in our chest. This allows air to move through our nose and mouth, into our windpipe and then into the lungs as they inflate. In the lungs, oxygen enters the body and carbon dioxide leaves. Then when we breathe out the diaphragm moves up, reducing the space in the chest, forcing the air out of the body, and deflating our lungs

The video tutorial for this activity is available on the Surrey Libraries Facebook Page or the Surrey Libraries YouTube Channel

How do you breathe???

 

  For our next science activity we are going to be making a model of our lungs and learning about how they work!

We will be releasing this activity on the Surrey Libraries Facebook page on Thursday 21st January at 4:30pm. 

For this activity you will need:

• A plastic bottle
• 2 balloons
• Tape
• Sticky Tack
• A straw
• Scissors

For more information watch this short introduction video

Follow Surrey Libraries on Facebook and Twitter for the latest information and don't forget to visit Science Club on the Surrey Libraries YouTube Channel

Make Cornflour Slime

Cornflour and water is an example of a non - Newtonian fluid. This means the way it moves doesn't just depend on temperature, it also depends on the force applied to it, or the speed of something moving through it.

The first thing that we are going to do is pour some cornflour into the bowl. We are now going to slowly add water to the cornflour in the bowl and mix the mixture very slowly until you have your slimy cornflower mixture 

If you try running your fingers through it you will see that you have a liquid, but if you try and hit it or stir it quickly it becomes solid, you could even try walking on it if you make a large amount and see what happens. 

The reason this works is that cornflour contains lots of starch. When this mixes with water it is able to move between the water particles and become a liquid but if a rapid force is applied the starch particles lock together and it becomes solid. 

The video tutorial for this activity is available on the Surrey Libraries Facebook Page or the Surrey Libraries YouTube Channel

Slip and Slide...

             For our next science activity we are going to be making slime from cornflour!

We will be releasing this activity on the Surrey Libraries Facebook page on Thursday 14th January at 4:30pm. 

For this activity you will need:

• Cornflour
• Water
• A bowl
• A spoon

For more information watch this short introduction video

Follow Surrey Libraries on Facebook and Twitter for the latest information and don't forget to visit Science Club on the Surrey Libraries YouTube Channel

Grow a Bear Osmosis

 

Osmosis is the movement of water from an area of high concentration to an area of low concentration. Jelly bears are made from gelatine and don't contain any water so we are going to see what happens when you add the sweets to different liquids 

The first thing that we are going to do is set up our 6 glasses/ containers. You will want to label your containers so that they don't get muddled. You will want to add one of water, salt water, sugar water, bicarbonate of soda dissolved in water, milk and vinegar into each container.

You are then going to add a jelly bear sweet to each container and then leave them overnight

So when you go back and have a look at your sweets you will find that they will all have grown but some will have grown more than others. You should see that the bear that was in the normal water will have grown at a faster speed than the other bears. This is because there is a bigger difference in the concentration of water between the inside and the outside of the bear so the water will move into the sweet.

You could try this activity with some other liquids and see what happens. You could also leave your bears for longer and see if they grow any bigger or see what happens to them

The video tutorial for this activity is available on the Surrey Libraries Facebook Page or the Surrey Libraries YouTube Channel

Bear-ing Up...

  

For our next science activity we are going to be learning about Osmosis by growing some Jelly Bears!

We will be releasing this activity on the Surrey Libraries Facebook page on Thursday 7th January at 4:30pm. 

For this activity you will need:

• Some Jelly Bear Sweets
• 6 containers
• Water
• Salt
• Sugar
• Milk
• Vinegar
• Bicarbonate of Soda

For more information watch this short information video

Follow Surrey Libraries on Facebook and Twitter for the latest information and don't forget to visit Science Club on the Surrey Libraries YouTube Channel

Dissolving Candy Canes

 Some substances dissolve when you add them to water or other liquids. When something dissolves it might look like it has disappeared but it has just become mixed in with the liquid and become see through/ transparent. If something can dissolve in water it is called soluble and if it can't dissolve it is called insoluble.

The first thing that we are going to do is set up our 4 glasses/ containers. In each of the glasses we are going to have a different liquid. We are going to add the same amount of hot water, cold water, oil and vinegar into each glass. We are going to label each glass as well so that we know what is in each glass

We are now going to add a candy cane to each glass and leave them for 10 minutes

After 10 minutes we are going to take out the candy canes and have a look at what has happened. You should see that the warm water was the best at dissolving the candy canes and the oil was the worst. The reason for this is because the candy canes are made from sugar and the sugar molecules are very good at dissolving in water. When the water has been heated the candy cane can dissolve quicker as the heat will help break apart the bonds holding the sugar molecules together  

If you don't have candy canes, or you want to repeat this activity, you could experiment with other sweets, like hard boiled sweets, and see what happens. You could also try some other liquids and see what effect they have on dissolving sweets

The video tutorial for this activity is available on the Surrey Libraries Facebook Page or the Surrey Libraries YouTube Channel