What is Light

What is light described as in the text?

• The smallest quantity of energy that can be transported

• A form of matter

• A chemical reaction

• A type of sound wave

What unique property does light have according to the text?

• Wave-particle duality

• It is the only form of energy

• It can be split into smaller parts

• It can only be created, not destroyed

What part of the electromagnetic spectrum is visible light found in?

• Between 400 nanometers to 700 nanometers

• Between 1 meter to 3 meters

• Between 10 picometers to 20 picometers

• Between 100 kilometers to 200 kilometers

What is the size comparison given for gamma rays in the text?

• About the size of a bacteria

• Comparable to the size of the Earth

• Larger than a football field

• Smaller than a hydrogen atom

Why is visible light special?

• It is the most abundant form of energy in the universe

• It is the fastest form of energy

• It is the only form of electromagnetic radiation

• We have evolved eyes that are good at registering it

Tags

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How are electromagnetic waves created?

• By mechanical movements only

• When atoms or molecules drop from a higher state of energy to a lower one

• Through thermal heating only

• Through chemical reactions only

Tags

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What is the speed of light in a vacuum?

• 1,000 meters per second

• 100,000 kilometers per hour

• 299,792,458 meters per second

• The speed of sound

Why is the speed of light finite?

• Nobody knows

• Because of gravity

• Due to atmospheric resistance

• Because of its wave-particle duality