Hubble's Law

What is Hubble's Law?

• Hubble's Law is a law of physics that states that the universe is constantly expanding
• Hubble's Law is a law of physics that states that the universe is constantly contracting
• Hubble's Law is a law of physics that states that the universe is static
• Hubble's Law is a law of physics that states that the universe is constantly rotating

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What is the Doppler Effect?

• A change in frequency or wavelength of a wave in relation to an observer
• The effect of gravity on light
• The effect of temperature on sound waves
• The effect of humidity on radio waves

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What is a Spectroscope?

• A device used to measure the speed of light
• An instrument used to measure the properties of light

• A tool used to measure the weight of a spectrum
• A device used to measure the temperature of stars

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Red-Shift: Light moving _____

• away from the observer
• towards the observer
• in a circular path
• in a straight line

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Blue-Shift: Light moving _____

• away from the observer
• in a straight line
• in a circular path
• towards the observer

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What is Hubble's full name?

• Hubble Bubble

• Hubble's Full Name
• Edwin Powell Hubble

• James Martin Hubble

When was Hubble born?

• 1889
• 1929
• 1943
• 1955

When was Hubble's law first formulated?

• 1940

• 1931
• 1929

• 1950

What is the current accepted age of the universe according to many Big Bang cosmologists?

• 13.8 billion years
• 10.4 billion years

• 15.4 billion years

• 20.9 billion years

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Write one sentence each explaining what Hubble's law, the Doppler Effect, Red-Shift, and Blue-Shift is.

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