Unit 2 Quiz: Origin of the Universe

What theory best explains the origin of the universe?

• Steady State Theory

• Big Bang Theory

• Geocentric Theory

• Heliocentric Theory

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Approximately how old is the universe according to current scientific understanding?

• 1 billion years

• 4.6 billion years

• 13.8 billion years

• 100 billion years

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What evidence supports the Big Bang Theory?

• Earth's magnetic field

• Radio wave transmission

• Cosmic microwave background radiation and redshift of galaxies

• Planetary orbits in the solar system

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What does the redshift of galaxies indicate?

• Galaxies are moving closer together

• Galaxies are cooling down

• Galaxies are moving away from each other, showing the universe is expanding

• Galaxies are spinning faster

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What tool do scientists use to measure the redshift of galaxies?

• Microscope

• Thermometer

• Spectroscope

• Telescope only

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What does cosmic microwave background radiation represent?

• Heat from the sun

• Static from radio towers

• Thermal radiation left over from the Big Bang

• Light from nearby stars

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Who proposed the idea of an expanding universe?

• Isaac Newton

• Edwin Hubble

What does a spectroscope do in astronomical observations?

• Measures the temperature of a star

• Captures star images

• Separates light into different wavelengths to analyze composition and motion

• Tracks satellite orbits

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What element was formed in the greatest amount during the Big Bang?

• Oxygen

• Helium

• Hydrogen

• Carbon

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Which statement best describes the importance of the Big Bang Theory?

• It proves the Earth is flat

• It explains the formation of solar systems only

• It provides a scientific explanation for the origin and expansion of the universe

• It describes the movement of tectonic plates

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