CH 5: The Doppler Effect with Light

<p>By observing changes in spectral lines. (D)</p> Signup and view all the answers

<p>Mapping the universe and understanding its structure. (B)</p> Signup and view all the answers

<p>The expanding universe theory. (C)</p> Signup and view all the answers

<p>To calculate the rate of expansion of the universe. (C)</p> Signup and view all the answers

<p>Afterglow of the Big Bang observed as microwave radiation. (A)</p> Signup and view all the answers

<p>Distance of celestial objects. (A)</p> Signup and view all the answers

<p>Dynamics of celestial objects and large-scale cosmos structure. (C)</p> Signup and view all the answers

<p>A phenomenon that occurs when there is relative motion between the source of waves and the observer, affecting the observed frequency and wavelength of the waves (A)</p> Signup and view all the answers

<p>A shift of light towards the red end of the electromagnetic spectrum, indicating that the source is moving away from the observer (C)</p> Signup and view all the answers

<p>It indicates that an astronomical object is moving towards the observer (C)</p> Signup and view all the answers

<p>Red shifts provide evidence for the expanding universe theory (D)</p> Signup and view all the answers

<p>A law that states that distant galaxies exhibit red shifts and that there is a proportional relationship between the red shift of a galaxy and its distance from us (D)</p> Signup and view all the answers

<p>It indicates a red shift (A)</p> Signup and view all the answers

<p>Blue shifts indicate that an astronomical object is moving towards the observer (B)</p> Signup and view all the answers

<p>The range of all possible wavelengths of electromagnetic radiation (A)</p> Signup and view all the answers

<p>The relative motion between the source of waves and the observer (C)</p> Signup and view all the answers

<p>Studying the expansion of the universe (D)</p> Signup and view all the answers

<p>The light is being red-shifted due to the expansion of the universe (A)</p> Signup and view all the answers

<p>Calculating the mass of celestial objects (D)</p> Signup and view all the answers

<p>The red shift increases as the distance increases (B)</p> Signup and view all the answers

<p>The observation of red shifts in the light from distant galaxies (D)</p> Signup and view all the answers

<p>The object is moving towards the observer (C)</p> Signup and view all the answers

<p>Galaxies farther away exhibit larger red shifts (B)</p> Signup and view all the answers

<p>The afterglow of the Big Bang (D)</p> Signup and view all the answers

<p>To understand the expansion of the universe and its evolution (C)</p> Signup and view all the answers

<p>They are at the same distance from Earth (D)</p> Signup and view all the answers

<p>To explore the dynamics and expansion of the universe (B)</p> Signup and view all the answers

<p>Determining the age of the Earth (B)</p> Signup and view all the answers

<p>A red shift indicates longer observed wavelengths, while a blue shift indicates shorter observed wavelengths (C)</p> Signup and view all the answers

<p>It supports the idea of a homogeneous and isotropic universe (A)</p> Signup and view all the answers

<p>It provides evidence for the Big Bang theory and the early stages of the universe's expansion (D)</p> Signup and view all the answers

<p>The expansion of space itself, stretching the wavelength (C)</p> Signup and view all the answers

<p>It is responsible for the observed red shifts in distant galaxies (B)</p> Signup and view all the answers

<p>The object's relative motion with respect to the observer (D)</p> Signup and view all the answers

<p>Measuring the mass of the Milky Way galaxy (A)</p> Signup and view all the answers

<p>The expansion of the universe since the Big Bang (C)</p> Signup and view all the answers

<p>The expansion of space-time itself (B)</p> Signup and view all the answers

<p>The relative motion between the source and observer causes a shift in the observed frequency and wavelength of the light. (C)</p> Signup and view all the answers

<p>The red shift is directly proportional to the distance. (A)</p> Signup and view all the answers

<p>They are at the same distance from Earth. (C)</p> Signup and view all the answers

<p>The red shifts of distant galaxies. (D)</p> Signup and view all the answers

<p>The object is moving towards the observer. (C)</p> Signup and view all the answers

<p>To understand the large-scale structure and dynamics of the universe. (A)</p> Signup and view all the answers

<p>The CMB is a relic of the early, hot, and dense universe after the Big Bang. (B)</p> Signup and view all the answers

<p>The expansion of the universe, which stretches the wavelengths of light. (D)</p> Signup and view all the answers

<p>It indicates that the universe was initially in a hot, dense state. (B)</p> Signup and view all the answers

<p>Detecting the presence of exoplanets around distant stars. (B)</p> Signup and view all the answers

<p>Measuring the precise temperature of a star's surface (A)</p> Signup and view all the answers

<p>It provides direct evidence for the existence of dark matter (A)</p> Signup and view all the answers

<p>They are located at the same distance from Earth (B)</p> Signup and view all the answers

<p>Galaxies with higher red shifts are farther away from us (C)</p> Signup and view all the answers

<p>The expansion of the universe stretching the light as it travels through space (B)</p> Signup and view all the answers

<p>It is caused by the relative motion between the source and the observer (A)</p> Signup and view all the answers

<p>The relative motion between the object and the observer (A)</p> Signup and view all the answers

<p>Determining the precise chemical composition of stars (D)</p> Signup and view all the answers

<p>To explore the dynamics of celestial objects and the large-scale structure of the cosmos (C)</p> Signup and view all the answers

<p>It only applies to light waves and not to other types of waves (B)</p> Signup and view all the answers