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Force in the early years/Document: Difference between revisions
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, 13 years agoSimonKnight moved page Force in the early years/Lesson on Force in the early years to Force in the early years/Document
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At KS1 pupils needs to be able to: | At KS1 pupils needs to be able to: | ||
* describe the movement of familiar things, | * describe the movement of familiar things, | ||
* know that pushes and pulls are examples of forces, | * know that pushes and pulls are examples of forces, | ||
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Here are some more examples: | Here are some more examples: | ||
* Car mat activity: describing the movement of toy cars as they are played with watching traffic – links to road safety. | * Car mat activity: describing the movement of toy cars as they are played with watching traffic – links to road safety. | ||
* Moving things in the classroom: twirlers, mobiles. | * Moving things in the classroom: twirlers, mobiles. | ||
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'''Points to follow up''' | '''Points to follow up''' | ||
''Pressure= force | ''Pressure= force / area'' | ||
If someone stands on your toes wearing stiletto heels, it is more painful than if they do so wearing wellies. The same force is applied over a smaller area. This also explains why it is important to lie on a ladder if you are rescuing someone trapped in a frozen pond. Your pressure on the ice will be less because your weight (force) will be spread over a larger area. | If someone stands on your toes wearing stiletto heels, it is more painful than if they do so wearing wellies. The same force is applied over a smaller area. This also explains why it is important to lie on a ladder if you are rescuing someone trapped in a frozen pond. Your pressure on the ice will be less because your weight (force) will be spread over a larger area. | ||
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If we were to rearrange this formula: | If we were to rearrange this formula: | ||
''Acceleration = force | ''Acceleration = force / mass'' | ||
Then we can see that acceleration is inversely proportional to the mass of an object. The bigger the object the harder we would have to push to get it to speed up. | Then we can see that acceleration is inversely proportional to the mass of an object. The bigger the object the harder we would have to push to get it to speed up. | ||
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Mass is a measure of the ‘amount of stuff’. | Mass is a measure of the ‘amount of stuff’.<br />Mass is measured in grams (g) and kilograms (kg).<br />Weight is the measure of the ‘pull of gravity’. Weight is a force measured in Newtons (N).<br />A mass of 1kg has a weight of about 10N.<br />On the earth, the pull of gravity is about 10N.<br />On the moon, the pull of gravity is about 1/6 of that on earth.<br />If your mass is 30kg on the earth it is also 30kg on the moon.<br />Your weight on the earth will be 300N but on the moon it will only be 50N. | ||
Mass is measured in grams (g) and kilograms (kg). | |||
Weight is the measure of the ‘pull of gravity’. Weight is a force measured in Newtons (N). | [[Category:Primary]][[Category:Science]][[Category:Teacher Education]] | ||
A mass of 1kg has a weight of about 10N. | |||
On the earth, the pull of gravity is about 10N. | |||
On the moon, the pull of gravity is about 1/6 of that on earth. | |||
If your mass is 30kg on the earth it is also 30kg on the moon. | |||
Your weight on the earth will be 300N but on the moon it will only be 50N. | |||
