KIDS QUIZ
SPACE EXPLORATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What scientific observation did Edwin Hubble use to determine distances between galaxies?
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As the light source passes Earth, the wavelength increases as the frequency increases.
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As the light source moves toward Earth, the wavelength decreases as the frequency increases.
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As the light source moves away from Earth, the wavelength increases as the frequency decreases.
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As the light source affects the gravity of Earth, the wavelength decreases as the frequency decreases.
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Explanation:
Detailed explanation-1: -Hubble also demonstrated that galaxies farther away from us are receding faster than those nearby – a fundamental observation now known as Hubble’s Law. The idea of an expanding universe is a key underpinning of the Big Bang Theory. Hubble’s observations provided the earliest insight into the origins of our universe.
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