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How Heavy or Light? Video Lecture | Crash Course for Class 6

FAQs on How Heavy or Light? Video Lecture - Crash Course for Class 6

1. What is the concept of weight and how is it measured?
Ans.Weight is the measure of the force exerted on an object due to gravity. It is commonly measured in units like grams or kilograms. A balance scale or a weighing scale can be used to determine the weight of an object by comparing it to known weights.
2. How does density relate to heaviness and lightness?
Ans.Density is defined as the mass of an object divided by its volume. If an object has a high density, it is considered heavy for its size, while a low density means it is light for its size. For example, a small lead ball is much heavier than a large sponge ball because lead has a higher density.
3. Why do some objects feel heavier than others even if they are the same size?
Ans.Some objects can feel heavier than others due to differences in their material composition. For instance, a block of wood and a block of iron may be the same size, but the iron block will feel heavier because iron is denser than wood.
4. How can we determine if an object is heavy or light for its size?
Ans.To determine if an object is heavy or light for its size, we can calculate its density by dividing its mass by its volume. If the density is greater than that of water (1 g/cm³), the object is considered heavy for its size; if it is less, it is considered light.
5. What are some common examples of heavy and light objects?
Ans.Common examples of heavy objects include metals like iron or lead, while light objects include materials like feathers or balloons. The perception of heaviness or lightness can also vary based on the object's size and shape.
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