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Science

Science Week 2020 - Ms McElduffs 6th class

posted Nov 25, 2020, 10:44 PM by Owen Breslin

Science Week 2020 Ms McElduff


Science Week - Ms Regans Jun Inf

posted Nov 23, 2020, 5:01 AM by Owen Breslin

Science Week 2020 Ms Regan


Science Week 2020 - Ms Dermodys 4th class

posted Nov 20, 2020, 7:42 AM by Owen Breslin

This week, we carried out some fun experiments for science week. 


First, we made a gas by creating a chemical reaction between vinegar and bread soda. To prove that a gas was produced, we attached a balloon to the top of the bottle. The balloon inflated so it was clear that a gas was produced. 


Next we investigated how exercise increased our heart rate. We checked our pulse when we were sitting down to get our resting heart rate in beats per minute (bpm). Then we did some strenuous exercise for 10-15 minutes. When we checked our heart rates again, they had increased a lot. We learned that this happens because our muscles need more oxygen when we are exercising and blood carries this oxygen to the muscles. Therefore, the heart needs to beat faster and work harder. 



Finally, we made ‘lava lamps’ using oil, water, food colouring and fizzing tablets. We learned that oil is less dense than water because it floated on top of the water. We also learned that the gas produced by the fizzing tablet is less dense than both oil and water because it rose to the top, carrying a colourful droplet of water with it. When the gas escaped at the top of the bottle, the colourful droplet sank back down to the bottom of the bottle because water is the least dense of them all. 


ms dermody science week 2020.pptx



Science Week 2020 - Ms Screeneys Sen Inf / 1st class

posted Nov 18, 2020, 12:50 PM by Owen Breslin

Ms Screeney’s class carried out great investigating work for Science week. They investigated which material made the best insulator. The children had great fun making raisins dance and they also investigated the effect of density and gases through making their own lava lamps.

Science Week 2020 Ms Screeney


Science Week - Ms Phelans 2nd / 3rd class - floating

posted Nov 18, 2020, 12:40 PM by Owen Breslin

This week we were learning all about density. We learned that objects sink in water when they are denser than the water. We decided to test this out by using an egg, salt and water. The egg sank in the water. So we added salt to the water. By adding salt, the water became denser. When the water was denser than the egg, the egg floated. 

Science Week 2020 Ms Phelan


Science Week Ms Bolands 1st class

posted Nov 17, 2020, 4:14 PM by Owen Breslin

In First class we discussed what dampness is, the cause of dampness and how it affects homes in Ireland. We also discussed what prevents dampness (damp course) in homes. We decided to investigate what materials will make the best damp course.

We used sugar cubes stacked as blocks, water and food colouring to demonstrate how moisture absorbs up through the blocks (wall).

We put different materials such as kitchen roll, plastic and parchment paper between each sugar cube to see which material would prevent the water from rising through the sugar cube.

Our Results showed that plastic and parchment paper were the best non- absorbent materials (damp course), the kitchen roll absorbed all the water and did not stop the water rising through the sugar cubes.

Science Week 2020 Ms Boland


Science Week - Ms Berrys 2nd class - forces / materials

posted Nov 13, 2020, 11:21 AM by Owen Breslin

Ms Berrys 2nd class


Science Week / Materials - 3rd class

posted Nov 12, 2020, 10:12 AM by Owen Breslin

This week, we carried out an experiment, ‘How to make eggs float’. We predicted that different things like sparkling water, vinegar, 7up, salt and oil would make an egg float. We found out that eggs will float in salty water. Objects sink in water when they are more dense than the water. By adding salt, the water became more dense. When the water was denser than the egg, the egg floated. 













Science Week - Mr Breslins class - Bicycle Gyroscope demo

posted Nov 10, 2020, 5:08 AM by Owen Breslin

Mr Breslins 6th class had great fun today learning about forces. After watching the linked video about angular momentum the pupils got to try it out for themselves. The explanation for what is happening is found in the extract below.

https://www.youtube.com/watch?v=L8QsMTbjlt0

20201110_115711.mp4




A rotating bicycle wheel has angular momentum, which is a property involving the speed of rotation, the mass of the wheel, and how the mass is distributed. For example, most of a bicycle wheel’s mass is concentrated along the wheel’s rim, rather than at the center, and this causes a larger angular momentum at a given speed. Angular momentum is characterized by both size and direction. The bicycle wheel, you, and the lazy susan form a system that obeys the principle of conservation of angular momentum. This means that any change in angular momentum within the system must be accompanied by an equal and opposite change, so the net effect is zero. Grace is now standing on the lazy susan with the bicycle wheel spinning. One way to change the angular momentum of the bicycle wheel is to change its direction. To do this, Grace must exert a twisting force, called a torque, on the wheel. The bicycle wheel will then exert an equal and opposite torque on Grace. (That’s because for every action there is an equal and opposite reaction.) Thus, when Grace twist the bicycle wheel, the bicycle wheel will twist Grace the opposite way. since Grace is standing on a low-friction pivot, the twisting force of the bicycle wheel will cause grace to turn. The change Grace’s angular momentum compensates for the change in angular momentum of the wheel. The system as a whole ends up obeying the principle of conservation of angular momentum.

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