This term, the Lower Juniors are finding out all about forces. If you have a question you would like to find out about, please post it below and we will get investigating and researching!

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19 Responses to Forces

  1. Joey B says:

    I already know a little bit about forces . However I still need work on it . If anybody knows the answers to my questions please tell me ! Thank you ! How do magnets work ? Why does paper catch air ? Why do balls move ?

  2. Kel M says:

    How dos gravity drag you down to the ground?

  3. Kel M says:

    How does the force of a magnet work?

  4. George P. says:

    I can answer some of Joey’s questions. Magnets have a north pole and a south pole – a compass needle is a small magnet and the north pole of the magnet always points towards the North Pole of the Earth. A magnetic field runs from the magnet’s north pole to its south pole. If you put two north poles together, they repel. If you put a north pole and a south pole together, they attract each other. The reason that a ball falls to the Earth is because of GRAVITY. Gravity is a force that pulls everything towards the centre of the Earth. Gravity is bigger when an object is larger. The Moon has weak gravity because it is small. This is why spacemen running on the Moon look odd! Have a look at this video : However, the gravity on Earth is strong because it is larger than the Moon. I have a question about forces. Why does your hair stick up when you rub a balloon on it?

  5. Jamie R says:

    I think the answer to your second question, joey, is that paper has a big surface area and causes more resistance through the air.

  6. Jamie R says:

    What I would like to know is, Do magnets affect gravity?

  7. Maddie C says:

    On the television, I watched a programme that showed you that when you drop a bowling ball and a feather at the same time in a chamber with no air, they land at the same time. But I want to know why? If anyone does know the answer, please let me know.

  8. Alice says:

    Magnets work on only two types of metals; iron and steel. The Magnet and the iron/steel interect with eachother because of what they are made of. When you throw a ball into the air, the gravity force pulls it down, just like when you jump on a trampoline. Paper catches air because it is light and thin. If you dropped a pencil, it would gain speed and just fall to the floor. :D

  9. Marcus E. says:

    i would just like to ask you children that how does gravity pull things down ?:-)

  10. Rocco R says:

    I know that the force that makes things fall is called gravity, but, what is gravity and how does it make things fall? Do you know what Einstein’s thoughts of gravity were?

    Why don’t you give this experiment a try….
    Fill a bucket up to halfway with water. Attach a piece of rope on the handle and swing your arm in a big circular movement so the bucket of water is whizzing around your body. Can you guess what will happen to the bucket of water? Do you think you would get wet? If not, can you tell me why?

  11. Amber C. says:

    Do you need more force to push a ball up the hill or down the hill ?

  12. Mia T says:

    Why does only metal go towards the magnet?
    When you try South and South together why do your hands shake?

  13. Toby D says:

    Can magnets attract heavier objects including: cars and lorries? Why does gravity get pulled towards the centre of the earth?

  14. Julia P says:

    How does the size of the magnet make a difference to the size of the magnetic field if it changes anything at all?

  15. Julia P says:

    I have a responce to Kel’s question. The centre of the Earth is like a magnet and everything is the metal. The magnetic field is huge!

  16. Julia P says:

    George P, hair sticks up using static electricity which comes from friction. Rubbing things together creates friction.

  17. Luca C says:

    Why don’t aeroplanes fall out of the sky?

  18. Luca C says:

    Hi Maddie, I watched the same programme, and I know how: there was hardly any gravity because the air was sucked out, which meant the bowling ball’s descent was slowed.

  19. Rachel F. says:

    WOW! what an interesting Topic! :)

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