Why Is Grass Green?
Why Is Grass Green? The green color in grass-and in most other plants-comes from chloroplast within the cells, each of which contains four different colors or pigments....
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Does a Falling Tree Makes Noise?
Does a Falling Tree Makes Noise? If a Tree Falls in a Forest and No One Hears It, Does It Make a Noise? The answer to this famous riddle depends on how we define sound....
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Why Does Lightning Always Strike the Highest Object Around?
Why Does Lightning Always Strike the Highest Object Around? Lightning is usually attracted to tall structures. Lightning is an electric spark that tries to bridge the...
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What Is the Use of Having Two Eyes?
The fact that we have binocular vision – that is, vision through two eyes – helps us to perceive depth. Our eyes measure about two and a half inches from...
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What Causes Sounds?
What Causes Sounds? All sounds are made by vibrations. Lightly place your fingers on your throat, and speak. The buzz you feel is your vocal cords vibrating. Stretch a...
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