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Light and Air - Class 6
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Define Rectilinear Propagation of light
The property of light travelling in a straight line is called as Rectilinear Propagation of light
What is Reflection
Bouncing back of light after hitting a surface is called as Reflection
Define Dispersion
The white light after passing through a prism splits into seven different colours called as Dispersion.
Firefly, Blackboard, Gold, Glowing mushrooms, Candle, Pen. Identify the Luminous objects.
Firefly, Glowing Mushrooms, Candle.
Identify the objects in the picture as luminous and non-luminous.
Non-Luminous objects.
Animals and plants are interdependent on each other. Justify the statement.
Animal release carbon dioxide gas while breathing which plants intake for photosynthesis.
Which gas supports Burning?
Oxygen
Which constituent in the air is the Plant nutrient?
Nitrogen
Mention any three properties of air.
Air is present everywhere around us. Moving air is called wind. ​Air is Transparent ​Air occupies space
The two gases which together make up about 99% of the air are
Nitrogen and Oxygen
Weather cock shows the direction of
wind
Moving air is called as
Wind
What are three things required to form a shadow
Opaque object, Screen, Light source
On a sunny day, does a bird or an aeroplane flying high in the sky cast its shadow on the ground? Under what circumstances can we see their shadow on the ground?
No. They are at very high altitude due to which the ground which acts as screen for the shadow is far away.
Explain about the image formation in Pinhole Camera.
The image formed in Pinhole camera will be diminished, inverted and real image.