Exam 1: Cosmology and the Birth of the Earth

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Because of the Doppler effect,a light- or sound-emitting object moving toward you has a ________ than a stationary object.

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Briefly describe how our Solar System formed,according to the nebular theory.

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Our Solar System formed from a nebular cloud of gas and dust that flattened into an accretionary disk under the influence of gravity.The Sun formed at the center of this disk,and the planets formed via accretion of materials in the rings surrounding the protosun.

The figure below shows a moving source of light with four stationary observers at different locations.Which observer will see red-shifted light from the moving source? The figure below shows a moving source of light with four stationary observers at different locations.Which observer will see red-shifted light from the moving source?

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Aside from the Earth,the terrestrial planets are

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The change in wavelength (and therefore frequency)of waves that happens if the source of the waves is moving is explained by the

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The images below show two different nuclear reactions.The left image shows ________,while the right image shows ________. The images below show two different nuclear reactions.The left image shows ________,while the right image shows ________.

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The branch of science that studies the structure and history of the Universe is

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Which of the following is NOT considered a Jovian planet?

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The current scientific explanation for the origin of planets,moons,asteroids,and comets in our Solar System is the

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When we say that light from a distant stellar object is red-shifted,this means that the light we see

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According to the Big Bang theory,

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Researchers have determined that the Universe began expanding after the Big Bang.When did the Big Bang event occur?

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Eratosthenes was the first person to accurately estimate the size of the Earth.He accomplished this feat by

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The metal alloy that makes up the core of the Earth is ________,as compared to the rocky mantle.

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By far the most common elements in the Universe and in our Solar System are

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Terrestrial planets are mainly composed of ________,while the giant planets are made predominantly of ________.

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What is happening to the size of the Universe? How do we know?

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Which of the following is a terrestrial planet?

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Foucault's experiment with a pendulum proved that Foucault's experiment with a pendulum proved that

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Differentiation of the core from the mantle early in the Earth's history was possible because the planet was ________ at the time.

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