Slideshows and documents - Materials, Energy and Forces
Slideshows - Senior classes investigating materials - soil - maths activity - sorting)
- Senior classes investigating materials - tasting and sorting
- Infants / first class investigating materials - sorting
Slideshow - Senior infants and first class investigating materials....
Cream Experiments - experimenting with cream - the effect of force, recording time.
See documents below from Niamh and Aine
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Energy and Forces - Gravity - see our work in these three slide shows
Paper Airplanes Experiment, measurement
We used A4 paper and A3 card.
We used a long measuring tape and paper clips.
We measured distances in metres and centimetres
We recorded our results.
What we found out
The space around us is filled with air. It is not empty even though we cant see it. The air pushes on everything around us. This is called air pressure.
Air that is moving has lower pressure than air that is still. The faster air is moving the lower its pressure is.
Teacher says that this is called Bernoulli’s Principle, after a Swiss scientist called Bernouilli who figured this out in 1738.
His ideais now used to lift aeroplanes up into the sky because air flows faster over the curved top of the wings than under the flatter bottom – this is how they stay up in the sky.
Slower air underneath has greater pressure. This pushes upwards on the plane, and stops it being pulled down by gravity.
We made paper aeroplanes by folding paper and card. Teacher asked us to estimate, and then measure, the distances the paper planes could travel so we could see whose design worked best .
We tried different ways of launching them and tried to figure out which was the best one.
We tried to make them AERODYNAMIC by giving them pointy noses to help them fly better.
The pointy nose cuts down the resistance of the air. This is called DRAG. Racing cars and sports cars, and cycling helmets – they all have pointy fronts so that they will go faster.
We experimented with paper clips – we put them on the noses of our paper planes to see what would happen. It dragged the nose down but they went further. Have a look at our slide show.
Rang 4
We used a long measuring tape and paper clips.
We measured distances in metres and centimetres
We recorded our results.
What we found out
The space around us is filled with air. It is not empty even though we cant see it. The air pushes on everything around us. This is called air pressure.
Air that is moving has lower pressure than air that is still. The faster air is moving the lower its pressure is.
Teacher says that this is called Bernoulli’s Principle, after a Swiss scientist called Bernouilli who figured this out in 1738.
His ideais now used to lift aeroplanes up into the sky because air flows faster over the curved top of the wings than under the flatter bottom – this is how they stay up in the sky.
Slower air underneath has greater pressure. This pushes upwards on the plane, and stops it being pulled down by gravity.
We made paper aeroplanes by folding paper and card. Teacher asked us to estimate, and then measure, the distances the paper planes could travel so we could see whose design worked best .
We tried different ways of launching them and tried to figure out which was the best one.
We tried to make them AERODYNAMIC by giving them pointy noses to help them fly better.
The pointy nose cuts down the resistance of the air. This is called DRAG. Racing cars and sports cars, and cycling helmets – they all have pointy fronts so that they will go faster.
We experimented with paper clips – we put them on the noses of our paper planes to see what would happen. It dragged the nose down but they went further. Have a look at our slide show.
Rang 4
Paper Aeroplanes – Maths Questions (World Cup) Rang 5 worked on these questions which we found on the activity sheet on the DPS web site.
1. If a Boeing jet uses about 16 litres of fuel for every kilometre it travels, how many litres of fuel will
it use on the journey to South Africa? 9500 x 16 = 152000 litres
2. If the price of jet fuel was €0.60 (i.e. 60 cents) per litre and increased
by 10%, what is the new price per litre? 10% of 60cents = 6cents so answer is 66 cents
3. If a jet can carry 500 passengers and 4,000 people want to travel, how
many jets will be needed? 4000 divided by 500 = 8
4. If the Boeing cruises at about 900 kilometres per hour, how long will it
take to get to South Africa? 10 hours 30 minutes
5. The money in South Africa is called ‘Rand’ and there are about 12 Rand
to €1. If you saw a football jersey in a shop in Johannesburg for 360 Rands
how much would that be in Euro? 360 divided by 12 = 30
6. Do not miss the match! South Africa is one hour ahead of Ireland in
time. If the match you want to see is at 5. 45 p.m. in South Africa, what time should you turn on
your TV here? 4.45pm
7. If a team plays 6 matches and wins 3, loses 2 and draws 1, what % of their matches do they lose?
Can you make a pie chart of these results? 33% or one third
8. There are 4 teams in each group. How many matches does each team play in their group? 3
How many matches are played altogether in each group? 12
RANG 5
1. If a Boeing jet uses about 16 litres of fuel for every kilometre it travels, how many litres of fuel will
it use on the journey to South Africa? 9500 x 16 = 152000 litres
2. If the price of jet fuel was €0.60 (i.e. 60 cents) per litre and increased
by 10%, what is the new price per litre? 10% of 60cents = 6cents so answer is 66 cents
3. If a jet can carry 500 passengers and 4,000 people want to travel, how
many jets will be needed? 4000 divided by 500 = 8
4. If the Boeing cruises at about 900 kilometres per hour, how long will it
take to get to South Africa? 10 hours 30 minutes
5. The money in South Africa is called ‘Rand’ and there are about 12 Rand
to €1. If you saw a football jersey in a shop in Johannesburg for 360 Rands
how much would that be in Euro? 360 divided by 12 = 30
6. Do not miss the match! South Africa is one hour ahead of Ireland in
time. If the match you want to see is at 5. 45 p.m. in South Africa, what time should you turn on
your TV here? 4.45pm
7. If a team plays 6 matches and wins 3, loses 2 and draws 1, what % of their matches do they lose?
Can you make a pie chart of these results? 33% or one third
8. There are 4 teams in each group. How many matches does each team play in their group? 3
How many matches are played altogether in each group? 12
RANG 5