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science for meryem

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  • Imagine a boy standing at different places around the world. The boy is holding a yo-yo at the end of its spring. The yo-yo is shown at the top of the picture. Copy the drawing. Then draw the string and yo-yo as it would hang in the other
    In all three drawings, the yo-yo will hang straight down (↓) because gravity always pulls objects toward Earth's center.
  • If an object has a mass of 2 kg, what is its weight on Earth?
    20
  • the force is called an object’s ______.
    weight
  • Which unit is used to measure WEIGHT?
    Newtons (N)
  • What causes this force?
    Gravity (Earth's pull).
  • What is the difference between this force on the Moon compared to Earth?
    The force (weight) is 6 times weaker on the Moon. Example: If you weigh 60 N on Earth, you’d weigh 10 N on the Moon.
  • What tool measures WEIGHT?
    Force meter (forceometer)*
  • Who discovered gravity by watching an apple fall?*
    saac Newton*
  • What units are forces measured in?
    Newtons (N).
  • What happens if forces are BALANCED?*
    The object doesn’t move* (Equal push/pull = no change!) *Example:* A book on a table has balanced forces.
  • What is the invisible force that pulls objects toward Earth?
    Gravity
  • Which of these does NOT change in space?
    Mass
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