Speed of Light

What value did Leon Foucault measure for the speed of light?

• 298,000 km/s

• 3 x 10⁸ m/s

• 186,000 miles/s

Which scientist improved on Leon Foucault's speed of light measurement?

• Leon Foucault

• Albert Michelson

• Albert Einstein

• Christian Huygens

The meter is defined as ...

• Equal to an aluminum bar in France

• the length of the path travelled by light in vacuum in 1/299,792,458 of a second.

• The length of the king's leg

• on ten millionth of the distance from the equator to the north pole

Who took Olaf Romer's data and calculated the speed of light from the orbit of Jupiter's moon Io?

• Christian Huygens

• Albert Einstein

• James Bradley

• Kirk Amman

What is the speed of light in kilometers per second?

• 1,000,000 km/s

• 300,000 km/hour

• 300,000 km/minute

• 300,000 km/s

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The distance light can travel in one year is ______________

• 15,000 kilometers

• 1 light-year

• 15 Astronomical Units

• 6,000 miles

What is the time taken for the light to travel between the Sun and Earth?

• 4 minutes

• 8 minutes

• 12 minutes

• 2 minutes

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What is the speed of light in a vacuum?

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Which experiment first measured the speed of light on Earth?

• Michelson-Morley Experiment

• Foucault's Pendulum Experiment

• Galileo's Lantern Experiment

• Romer's Io Observation

What is the significance of the speed of light in Einstein's theory of relativity?

• It is the maximum speed at which all energy, matter, and information in the universe can travel.

• It is the speed at which time stops.

• It is the speed at which gravity propagates.

• It is the speed at which sound travels in a vacuum.

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