What Is Light

Light is a form of energy that is transmitted by the ...?

• Moon

• Sun

• Earth

• Animals

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Light is carried by _____ waves.

• Electromagnetic

• Magneticelectro

• Sun's rays

• Ocean waves

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4. Electromagnetic waves are waves that ______ require a medium to travel.

• do not

• do

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When can you see light?

- The object must be a _____ of light itself. Example: The Sun (all stars).

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Light travels as a transverse wave, in an _______ motion.

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The closer a source of light is to you, the _______________ it appears.

• brighter

• dimmer

• softer

• prettier

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__________________ is when light slows down as it passes through an object and bends.

• Reflection

• Refraction

• Visible spectrum

• Intensity

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What is the speed of light in a vacuum?

• 299,792 km/s

• 150,000 km/s

• 1,080,000 km/s

• 500,000 km/s

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Which of the following phenomena demonstrates that light behaves as a wave?

• Photoelectric effect

• Diffraction

• Compton scattering

• Blackbody radiation

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What is the primary source of natural light on Earth?

• The Moon

• The Sun

• Volcanoes

• Bioluminescent organisms