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Pressure. Ks3 Science. Aims. Aim;. Understand the relationship between; Force Area Pressure Write detailed explanations about pressure using scientific language. . FACT AIM. SKILL AIM. Odd one out. Which is the odd one out and why?. Simple definition. Pressure;.

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Pressure l.jpg

Pressure

Ks3 Science

Aims


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Aim;

  • Understand the relationship between;

    • Force

    • Area

    • Pressure

  • Write detailed explanations about pressure using scientific language.

  • FACT AIM

    SKILL AIM

    Odd one out



    Pressure4 l.jpg
    Pressure;

    • When we talk about pressure in Science we use it as a measure of the ratio of how much push or force there is acting on a given surface area.

    • Simply put if a girl pushes by the same amount on a desk….

    • The smaller the contact area the larger the pressure is.

    TRY IT!

    Low Pressure

    High Pressure

    Literacy


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    Pressure;

    • Use the writing frames in the next slides to help explain what is happening in the two pictures underneath.

    • Pick from the options and construct a paragraph on your sheet.

    Footballers boot

    Camels foot

    Describe

    Answers


    Create your sentences l.jpg

    Answers

    Create your sentences;


    Create your sentences7 l.jpg

    Answers

    Create your sentences;


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    Pressure;

    • Watch the two video clips about pressure and do the same task.

    • This time use your own explanations using your previous examples for reference.

    Describe

    Tank v Ballerina

    Nettle Stings

    Odd one out



    Slide10 l.jpg
    Aim;

    • Understand the relationship between;

      • Force

      • Area

      • Pressure

  • Write detailed explanations about pressure using scientific language.

  • FACT AIM

    SKILL AIM

    Odd one out


    Sharing division l.jpg
    Sharing/ Division?

    • If I have an apple and share it between 2 people or 4 people I can write mathematically as;

    • So each person either gets a half an apple or a quarter of an apple. The more people I share it with the less apple the get each.

    Simple definition


    Pressure12 l.jpg
    Pressure;

    • What we have done is work out a qualitative idea for pressure;

      “the larger the area is the lower the pressure.”

    • However we can describe this mathematically;

    Force ( N, Newton)

    Area (m2 or cm2)

    Pressure (N/m2 or N/cm2)


    Pressure examples l.jpg
    Pressure Examples;

    • A person pushes on a desk with a force of 10N. The contact area of their finger is 1 cm2.

    A = Area (m2 or cm2)

    Force ( N, Newton)

    P = Pressure (N/m2 or N/cm2)


    Pressure examples14 l.jpg
    Pressure Examples;

    • A person pushes on a desk with a force of 10N. The contact area of their hand is 125 cm2.

    A = Area (m2 or cm2)

    Force ( N, Newton)

    P = Pressure (N/m2 or N/cm2)


    Pressure comparison l.jpg
    Pressure Comparison;

    • We can now see the relationship numerically or quantitatively. As the area increases the pressure decreases;

    A = Area (m2 or cm2)

    Force ( N, Newton)

    P = Pressure (N/m2 or N/cm2)


    Slide16 l.jpg
    Aim;

    • Understand the relationship between;

      • Force

      • Area

      • Pressure

  • Write detailed explanations about pressure using scientific language.

  • FACT AIM

    SKILL AIM

    Odd one out