What Makes Diamonds Sparkle?

What is unique about diamond's ability to interact with light?

• It can slow down the speed of light to less than half its speed in a vacuum.

• It can increase the speed of light beyond its natural speed.

• It can completely absorb light, making diamonds invisible.

• It can change the color of light to only blue.

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What colors can diamonds naturally appear in?

• Only colorless and yellow.

• Red, orange, green, blue, brown, and black.

• Only in shades of blue and green.

• Diamonds are always colorless.

Why were diamonds not originally seen as objects of beauty?

• They could only be found in inaccessible locations.

• They were considered bad luck.

• Their optical properties were not recognized until recently.

• They were too common and easily found.

What is the speed of light in a vacuum?

• 186,000 miles per second.

• 100,000 miles per second.

• 300,000 kilometers per second.

• 500,000 miles per second.

What happens to light when it travels through matter like diamond?

• It splits into two beams.

• It travels slower than its speed in a vacuum.

• It accelerates beyond its natural speed.

• It instantly stops.

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What substance slows down light the most according to the text?

• Diamond

• Water

• Lead-containing decorative glass

• Air

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How much slower does light travel in water compared to a vacuum?

• Just a few hundred miles per second slower

• About 140,000 miles per second

• About 100,000 miles per second slower

• About 30 percent slower

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What phenomenon occurs when light passes from one clear substance into another with a different light speed?

• Absorption

• Reflection

• Refraction

• Dispersion

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Which gemstone is known for its ability to disperse light into all the colors of the rainbow?

• Ruby

• Sapphire

• Diamond

• Emerald

What is the speed of light in diamond compared to air?

• Less than 80,000 miles per second

• Just a few hundred miles per second slower

• About 120,000 miles per second

• About 140,000 miles per second

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