# Forces

Next Wednesday is our next Scientific Investigation day and we will be looking at the topic of ‘forces’. In preparation for the day, please can you share your knowledge about this area. For example: describe the different types of forces that you know; can you think of any experiments you might like to do to test forces or maybe research a famous scientist within this field.

We look forward to reading your blogs and will share them on Wednesday morning in class.

### 89 thoughts on “Forces”

1. What i have learnt about forces. If you rub something against a table or anything else like a table it will cause friction. But if its a smoother surface then you don’t have that much force and friction because the thing that you’re rubing can slide about more. Any kind of force is really just a push or a pull. Magnetism is a type of force. A magnet might pull an object toward it or push it away. Springs and elastic are also types of force. Push against them and they resist. They spring back with the same force you gave them. The force definition is something that causes a change in the motion of an object. The modern definition of force (an object’s mass multiplied by its acceleration) was given by Isaac Newton in Newton’s laws of motion. The most familiar unit of force is the pound. Finlay

• Excellent Finlay. You know lots!

• This is a remarkable fact! You have taught me something.

2. A force is an object to undergo a specific change. Unbalance forces cause changes of speed,shape or direction. Graitational forces act between masses. Friction opposes motion.

A force is a push or a pull. They can be balanced or unbalanced. If the are unbalanced they can change the shape of objects and can change the way there moving. Movements are changing forces.
By Lucy Scowcroft

• Well done Lucy. Very informative. Thank you.

• I cpied it off the CBBC website then put it into my own words

• Its Science day on forces yes!!!!

• Were learning about forces too, now i’ll be an expert!

3. A force is measured in Newtons.
A force can make a heavy rock to slide across easily.
When a an object scrapes the floor it creates something called friction.

• Well done Malik!

• Nice work
Lucy!

• Newtons are very incredible invention! Awesome facts!

4. Archimedes was a famous Greek scientist from more than 2000 years ago. He lived in Syracuse. The king asked him to work out how much gold was in his crown. But how could Archimedes work this out without breaking the crown? He found out when he had a bath that water was pushed out of the bath when he got in. Archimedes realised that he could use this to work out how much gold was in the crown. When he discovered it he shouted “Eureka!”. By Sadie

• Thank you Sadie for a comprehensive post. I hope this fact finds its way into our Ancient Greek writing. Our expert group on Greek thinkers take note!

• Interesting!
Lucy!

• Hi, its someone from Ourlady’s here, I have never known someone know so much about Archimedes!

5. I found out some facts about Sir Isaac Newton, one of the most influential scientists of all time! Born in England, Newton was a physicist, astronomer and mathematician. He published a book in 1687, which is regarded as one of the most important books in the history of science! Philosophae Naturalis Principia Mathematica describes universal gravitation, and the three laws of motion. His law of gravitation explains the attraction between bodies with mass (solid objects), for example the Earth and the Moon. Newton’s laws of motion explain how forces act on a solid object to affect its motion.
Newton said that his theory of gravity was inspired by watching an apple fall from a tree. One of Newton’s famous quotes was, “I can calculate the motions of the heavenly bodies, but not the madness of people.”
By Alice Loftus 5C

• Super research Alice. Well done.

• Interesting facts on Issac Newton!

Lucy

• I find Isaac Newton such such an influential person too!

6. Archimedes was sitting in a bath after the king told him to see how much his crown was worth, he was sitting in the bath around 2250 years ago and he had finally worked it out so he shouted EUREKA!!!!!!!!, Max.

• Well done Max.

• I don’t get it, why in a bath?
Lucy

• This is the best story so far! It is very funny!

7. I know about friction, gravity and inertia. I know that gravity holds the planets in their orbit and keeps us from floating of into space. Without gravity the Earth wouldn’t even have formed! Friction is the opposing force for every moment. Inertia is the force that stops things from falling out of a basket spun around really fast when it’s upside down. An object will move continuously unless a force acts upon it. If you throw a ball up it falls back down because of gravity. This proves this point. If you apply a force to an object an equal amount of force is applied to you.

• Wow Rosie. You know so much. Thank you.

• What’s inertia?
Lucy

• I had no idea how strong forces were!

8. Force is measured in newton’s. A force is either a push, pull or twist. Friction is the action of one surface or object rubbing against another.
By Amelie

• Thank you Amelie.

• Like a balloon!?
Lucy

• Friction is really fun to play around with!

9. winmarleigh yesssssss!!!!!!!!!!!!!!!!!

• Oops!

10. Forces are measured in newtons and can push pull or twist an object.I remember what forces are measured in because of Isaac NEWTON a great scientist who studied laws of motion.Next week,I want to learn about a force named static(might include some baloons)yes!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

• An experiment with balloons sounds fun!

• I hope it’ll include balloons as well!
Lucy

• I like using static (friction) and stick balloons to my hair!

11. Winmarleigh Hall was EPIC,FANTASTIC all the good words I can name in my head.My best part was probably the zipwire but I thought it would go acros a motorway or all the way to Egypt:):)!!!!!!!

12. Forces are measured in Newtons, they can be balanced ,unbalanced , pushes or pulls. If two forces are balanced it means the forces are the same size but are in opposite directions.An unbalanced force changes the way something moves and can change the speed of the object.Gravity keeps earth in orbit and friction is when two surfaces rub together there will be more friction on rough surfaces. Leo

• Super science work Leo. Well done.

• Cool! 🙂

• Hi, I’m from Ourlady’s and heard you were doing forces! I loved reading this, now i will know how forces are measured too!

13. FORCES
A force is a push or a pull on an object resulting from the objects interaction with another object . Whenever there is an interaction between two objects, there is a force upon each of the objects .
Different types of forces :
Magnetic forces e.g. A magnet on a fridge.
Frictional forces
Applied forces
Gravitational forces
Air resistance forces and many more. By Cody

• Well done!

• Interesting!
Lucy

• I always wondered how magnets work!

14. There are a lot of different forces, for instance: friction, magnetism and Spring.
A force is a push or pull.
If you had a log and you put a bag of bricks on top of it, and then you put the log on top of a rock and you pushed down on the side of the log that didn’t have the bricks on, you would be creating less effort into moving the bag of bricks.
The person that said “Eureka” whilst stepping into the bath is called Archimedes he said this because he learnt that water is displaced when stepping into the bath tub.
By Savannah h.

• You are a fabulous scientist! Well done.

• I hope our experiments will include springs!
Lucy

• Hi, I’m from Ourlady’s and heard you were doing forces! I love how you give examples to your work!

15. Great posts everyone. Super knowledge already. Can you budding scientists help me? I was driving up Eastbourne Grove in the snow today, trying to reach the car park when I became stuck and had to reverse down the road. However, the car infront of me managed, quite effortlessly, to reach the car park. Why could their car manage it and not mine? Mr Vickers says that I cannot have a new car!

16. You measure force in Newton’s,you can pull, push and twist forces. I am looking forward to our scientific day. I wonder what are we going to do and what we are going to learn.

• Same!
Lucy

• Well I hope you learn lots!

17. A force is measured in Newtons. When a surface rubs against another it is called friction

• What do you call the instrument used to measure forces?

• Cool!
Lucy

• Good to know!

18. Forces are measured in Newton’s and when something slides across the floor it creates a force called friction. But if it is a smother surface it will not have as much friction as the smooth surface will allow the object to slide about more. If two forces are balanced they will be the same size but in opposite directions. An unbalanced force changes the way something moves and can also change the speed of the object. By Ellen

• Fabulous Ellen. You can introduce the topic tomorrow as this is what we had planned. Thank you

• Interesting facts!
Lucy

• Hi, I’m from Ourlady’s and heard you were doing forces! This is a very detailed description of them!

19. Hey guys. It’s me, Amelia. Mrs Vickers said share your knowledge about forces. So here’s mine about Diet Coke and mentos. You might be wondering why Diet Coke and mentos create such exciting geysers.

It’s mostly due to a process called nucleation, where the carbon dioxide in the soda is attracted to the mentos (they are awfully cute). That creates so much pressure that the soda goes flying. We then built nozzles that make the opening smaller and that makes the geysers go even higher (I really wished Diet Coke flew out of it’s bottle) 🙁

Best wishes Amelia Pope XX

• Thank you, Amelia. I think we have lot of children rushing out to the shops for mentos and diet coke. We actually cover this when we look at reversible and irreversible processes, so watch this space.

• I love this one because I love mentos!

• This sounds like a fun experiment!

20. A force is a push or pull upon an object resulting from the object’s interaction with another object. Whenever there is an interaction between two objects, there is a force upon each of the objects. Forces are measured in units called newtons. The unit is named after the famous physicist Sir Isaac Newton.

• I love Isaac Newton! Well done!

21. Archimedes shouted eureka in the bathtub.
By Josephine

• This is a peculiar story! I have so many questions! Well done though!

22. A force is an interaction that will change the motion of an object when the force is unopposed. A force can cause an object with mass to change its velocity. Sir Isaac Newton was one of the first scientists to study force.
By Josephine

• What a marvellous piece of information!

23. Inertia is not a force.
By Josephine

• Well i would have thought was! Thank you for the info!

24. Some forces are,
Applied force, Gravitational force, Normal force, Frictional force, Air Resistance force, Tension force and Spring force.
By Josephine

• I would love to know more about the gravitational force, that sounds epic!

25. I know that forces like gravity are measured in newtons! They are named after Sir Isaac Newton who was the scientist who discovered gravity. It happened when an apple crashed on his head and he wondered why it didn’t go up or side to side. This force is what stops everything floating away. Did you know that the Moon has 10% of the earths gravity? That’s why astronauts don’t float off it! Gravity is the force that makes the Moon orbit the Earth and the Earth orbit the Sun! Gravity on Earth comes from its core. If there was no Gravity water would float around in spheres… wouldn’t that be weird?

By Jude

• Yes, floating around in spheres would be weird! A very good piece of writing!

• Good facts Jude very informational! Oliver

26. if you mix corn flower and water it makes a liquid that if you pick up it turns hard and people call it oblek.

27. forces are measured in newtons.

28. I know that if you rub two surfaces together it will cause friction.

29. forces are meausured in nutons and sometimes in grams. from oliver

30. forces are described as a push or pull on an object.

31. I know that when something is flat, the air is under the flat thing, its slowing it down. This force is called gravity.

32. Hi, I’m from Ourlady’s and heard you were doing forces! I really like the rhetorical questions!

33. When you rub two objects together it makes friction.forces are measured in nutons or sometimes grams.Isaac Newton was the person who discovered gravity by an apple dropping onto his head! there is a different of forces called air resistance. By Oliver