Year 3 Science 23rd June 2021

Hi year 3,

This week we are going to make progress on our knowledge of forces and will look at friction as a force.

What is friction? Watch the video to find out.

https://www.bbc.co.uk/bitesize/clips/z79rkqt

Investigation:

Complete your investigation at home and complete the challenges below:

Bronze: What is friction?

Silver: Which surface have more or less friction? How do you know?

Gold: If I went skiing would I want there to be more or less friction? Explain.

153 thoughts on “Year 3 Science 23rd June 2021

  1. Friction is a rubbing force. It can make something go faster or slower depending on the force used.if the surface is smooth the friction will be less. If the surface is not smooth the friction will be bigger and more

  2. Bronze
    Friction is when you. Add more force it moves less and If you you add less it would go more
    Silver
    The carpet could have more because if it was rough I could move more

  3. Bronze:
    Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.
    Silver:
    Rough surfaces have more friction than smooth surfaces and liquids such as oil or water are sometimes used as lubricants to reduce the effect of friction. There is no mystery behind friction. It acts on objects at the surfaces so as to prevent or reduce movement between the surfaces.
    Gold:

    The more friction, the more heat you generate instead of speed, and the slower you go down the slope. … Hot wax which is applied to the entire ski, in particular, reduces the friction between the ski and the snow, which means you can go faster down the slope. Wax is a cheap and effective way to improve your speed!

  4. Bronze
    Friction is a force that slows things down.
    Silver
    The table has less friction because it is more smoother than the carpet.
    The carpet has more friction because it is rough.
    Gold
    Less friction because you will be able to ski longer.

  5. bronze
    friction is a force between two things that work in the opposite ways.

    Silver: Which surface have more or less friction? How do you know?
    carpet has more friction because it is rough
    table -the table has less because it is smooth

  6. Bronze
    Friction is a force that can slow stuff down or make them faster.
    Silver
    The Laminated floor Has less friction because it is more smooth.
    Gold
    Less because you wanna go faster.

  7. Friction is a force between two surfaces that are sliding, or trying to slide, across each other. … Friction always works in the direction opposite to the direction in which the object is moving or trying to move. Friction always slows a moving object down.
    silver
    rough more
    soft less

  8. Bronze
    Friction is a force that makes the object go down if there is more friction it makes the object go faster if there is less friction or it can make the object go slower is there is more friction.
    Silver
    A surface like the floor would have more friction because it is rough and hard but a table would has Les friction because it is more smoother then the floor I know this because the floor is very hard and will make it stop easily however the table Les friction because it is smooth and flat not like the floor the floor is very bumpy and hard so it will make the object with wheels slow down.
    Gold
    You would want less friction because is like a race and in races you have to be fast however you also need some friction in case you would also want more friction in some areas to prevent you from all of a sudden fallings

  9. Bronze
    Friction is a force between two surfaces that are sliding,or trying to slide across each.
    Silver.
    Rough surfaces have more friction than smooth surfaces.carpet have more friction than floor.
    Gold.
    For skiing you need less friction so you can go fast.

  10. Bronze
    Friction is something that stops objects from moving.

    Silver
    The rug would have more friction because the rug is bumpy and rough whereas the laminate would have less friction because the surface is smooth. My car would move faster on the laminate rather than the rug.

    Gold
    You would want less friction because you can then move quicker and not slow down. This would be good for a race. However, you would also want more friction in some areas to prevent you from all of a sudden falling.

  11. A friction is a rubbing force.
    Silver
    A ramp because it is going downwards not upwards.
    Gold
    less because if it was balance you wouldn’t move.

    • Ahmed watch the video again and see if you can tell me what friction is. Your very nearly there but I would like you to expand your answer. You can then go onto the silver and the gold challenges and answer those questions too. I know that you are more than capable of completing all of this task for Science👍🏼

  12. BRONZE
    Friction is a Force that makes something go foreword or backwoods.
    SILVER
    The flor will have more friction that means the car will stop slowly but go faster.
    GOLD
    You would want it to have more Friction.

  13. 4,3 and 3
    A friction is a force that slows down an object.
    Something smooth so then it has less friction but if it was more it wouldn’t go that far
    You would want Less friction so you could go far.

  14. BRONZE
    Friction is a force between two surfaces that are sliding, or trying to slide, across each other.
    SILVER
    I pushed my car on the carpet and laminate floor.
    Carpet has more friction than the floor. because it moved long distance on floor than the carpet.
    GOLD
    If I went skiing I would need less friction because then I can move faster.

  15. Bronze;
    Friction is the force that makes it difficult for one object to slide along the surface.
    Silver;
    A carpet will have more friction that means the car would move slowly and stop however if you had tiled place and you used the car there would be less friction and the car would go more faster.
    Gold;
    There would be less friction because would be easier to ski and to turn when you hit the slopes.

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