Gravitation Activity 4 An example of force at a distance
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Activity No #4 Why do objects feel heavy
- Estimated Time - 30 minutes
- Materials/ Resources needed
- A piece of iron
- A piece of wood
- A ball of yarn or cotton
- Prerequisites/Instructions, if any
- Multimedia resources
- Website interactives/ links/ simulations
- Process (How to do the activity)
- Hold each object in your palm
- What do you feel when you hold each one of them (ask them to answer as light--->heavy)
- Developmental Questions (What discussion questions)
- Is there a difference when you hold each of them?
- Is this due to inertia? Am I changing anything when I am holding?
- What might this difference be due to?
- This is due to a property called weight which is because the mass of this object interacts with another mass - that of the earth. We call this weight
- We will study more about this - but mass also interacts with other masses; this is called gravitational property. We already saw that is has an inertial property
- The Earth is not touching the object, but still its mass has an effect on the mass on my hand
- Gravity can act at a distance between two masses
- Evaluation (Questions for assessment of the child)
- Does mass have both inertial and gravitational property?
- Does gravitational property depend on size? Or mass?
- Question Corner
- If an object has inertia, when I drop the object why does it fall?
- Do you feel the gravitational effect of the Earth?