Unit 1: Lesson 2 Vocabulary Test

A range of different types of something, like the colors in a rainbow.

• Spectrum

• Wavelength

• Redshift

• Universe

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The range of all types of light waves, including those we can't see, like radio waves and X-rays.

• Wavelength

• Cosmic Microwave Background (CMB)

• Electromagnetic Spectrum

• Big Bang Theory

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The distance between the tops (or bottoms) of waves, like in light or sound.

• Electromagnetic Spectrum

• Wavelength

• Spectrum

• Redshift

Tags

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Faint radiation left over from the early universe that we can still detect today.

• Cosmic Microwave Background (CMB)

• Electromagnetic Spectrum

• Wavelength

• Big Bang Theory

Tags

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The idea that the universe started with a huge explosion about 13-15 billion years ago.

• Big Bang Theory

• Cosmic Microwave Background (CMB)

• Wavelength

• Spectrum

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A scientist who helped develop the idea of the Big Bang and predicted the Cosmic Microwave Background.

• George Gamow

• Albert Einstein

• Sir Isaac Newton

• Edwin Hubble

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A famous scientist who developed the theory of relativity, which changed how we understand time and space.

• Sir Isaac Newton

• Edwin Hubble

• George Gamow

• Albert Einstein

A famous scientist who figured out the laws of motion and gravity.

• George Lemaitre

• George Gamow

• Albert Einstein

• Sir Isaac Newton

Tags

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A scientist who discovered that galaxies are moving away from us, helping to prove the universe is expanding.

• Edwin Hubble

• Sir Isaac Newton

• Albert Einstein

• George Gamow

Tags

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A scientist who first suggested the idea that the universe began with a big explosion.

• Edwin Hubble

• Sir Isaac Newton

• George Lemaitre

• Albert Einstein

Tags

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