In which of the situations shown AD will the observer rece.pdf

•

0 likes•1 view

In which of the situations shown (AD) will the observer receive light that is not Doppler Shifted at all? Explain your reasoning. 4) Imagine our solar system is moving in the Milky Way toward a group of three stars. Star A is a blue star that is slightly closer to us than the other two. Star B is a red star that is farthest away from us. Star C is a yellow star that is halfway between Stars A and B. a) Which of these three stars, if any, will give off light that appears to be blueshifted? Explain your reasoning. b) Which of these three stars, if any, will give off light that appears to be redshifted? Explain your reasoning. c) Which of these three stars, if any, will give off light that appears to have no shift? Explain your reasoning. 5) You overhear two students discussing the topic of Doppler Shift. Student 1: Since Betelgeuse is a red star, it must be going away from us, and since Rigel is a blue star it must be coming toward us. Student 2: I disagree, the color of the star does not tell you if it is moving. You have to look at the shift in wavelength of the lines in the star's absorption spectrum to determine whether it's moving toward or away from you. Do you agree or disagree with either or both of the students? Explain your reasoning..

Star clusters provide insight into stellar evolution. Open clusters contain a few dozen to hundreds of younger, hot stars loosely spaced in a galaxy's disk. Globular clusters contain tens to hundreds of thousands of older, metal-poor stars in a spherical distribution in a galaxy's halo. Measuring a cluster's main-sequence turn-off point allows determining its age. Some globular clusters exhibit evidence of black holes at their centers from observations of white dwarf concentrations.

ASTR 100Final Exam – Spring 2015University of Maryland Unive.docx

ikirkton

This document appears to be a final exam for an astronomy course. It consists of 50 multiple choice questions testing concepts covered in the course, followed by open response sections. The multiple choice questions cover topics such as the scientific method, theories of the solar system, properties of stars and galaxies, and the age and expansion of the universe. The open response sections ask students to apply formulas to calculate distances and ages, compare star properties, and analyze hypothetical planetary systems and star cluster diagrams.

P7 lesson part three

samuelaylward

Science: Earth and Space G9 Q3 Constellation.pptx

Naztia1

The document provides classroom instructions for grade 9 students. It discusses rules about avoiding gadgets and talking in class. It then reviews a song about stars and provides multiple choice questions to assess comprehension. Next, it discusses the key characteristics of stars such as brightness, color, temperature, size and mass. It explains how these characteristics are defined and measured. It emphasizes that stars played an important role for early human navigation and are essential for life on Earth. The document ends with a quiz to test understanding of the material.

Ast Ch 03 Ques 2010

Bremen High School

The document discusses key concepts about stars including: 1. The parsec is a unit of distance used to measure nearby stars based on the parallax method. One parsec equals 3.26 light years. 2. Stars are classified into seven spectral classes based on their colors, from hottest blue class O to coolest red class M. 3. The Hertzsprung-Russell diagram plots stars based on their luminosity and temperature, showing locations for main sequence stars like the Sun as well as red giants, blue giants, and other stages.

Review _14_astronomy_sc(2)

Lexume1

Chapter9

Charisse Marie Verallo

This document discusses methods for determining properties of stars such as their distance, luminosity, radius, and mass. It explains that trigonometric parallax can be used to measure distances to nearby stars within 50 parsecs. Absolute magnitude and distance modulus relationships allow calculation of intrinsic brightness. A star's luminosity is proportional to its radius squared, so comparing luminosities determines relative radii. The Hertzsprung-Russell diagram organizes stars by temperature and luminosity, revealing populations like giants and dwarfs. Masses can be estimated using Kepler's laws applied to binary star orbits in visual, spectroscopic, and eclipsing binary systems. Large surveys aim to characterize the diversity of stars within our galaxy.

The Celestial Sphere

Saeed Jafari

The Sky Astronomy is about us. As we learn about astronomy, we learn about ourselves. We search for an answer to the question “What are we?” The quick answer is that we are thinking creatures living on a planet that circles a star we call the sun. In this chapter, we begin trying to understand that answer. What does it mean to live on a planet? The preceding chapter gave us a quick overview of the universe, and chapters later in the book will discuss the details. This chapter and the next help us understand what the universe looks like seen from the surface of our spinning planet. But appearances are deceiving. We will see in Chapter 4 how difficult it has been for humanity to understand what we see in the #sky every day. In fact, we will discover that modern science was born when people tried to understand the appearance of the sky.

This document contains a 20 question astronomy review packet covering topics like the formation of the solar system, stellar evolution, properties of stars and galaxies. It includes diagrams and tables to reference in answering multiple choice and short answer questions. The review covers the life cycles of stars of different masses, including our Sun, as well as properties of planets, asteroids and galaxies.

Monday may 28th

j_lee317

The document outlines an agenda for a science class on galaxies. It includes an introduction to galaxies where students learn that galaxies come in different shapes and sizes. They are introduced to the three main types of galaxies - elliptical, spiral, and irregular - as classified by Edwin Hubble. Students then participate in an activity where they categorize example galaxies into the different types. The rest of the class is spent working on ongoing science projects, with some groups giving presentations to other classes later that week.

Review game astro

West Hollow MS Ms. Gill

The document contains a review of astronomy concepts tested over multiple choice questions. It covers topics like: - Where small stars are located on the H-R diagram (main sequence) - That 90% of stars fall on the main sequence - Jovian planets have greater diameters and slower rotation compared to terrestrial planets - A white dwarf is cooler and smaller than the Sun - Red giants have greater luminosity than the Sun due to being larger

Astronomy np1 out line

West Hollow MS Ms. Gill

1) Astronomy is the scientific study of celestial objects like stars, planets, comets, and galaxies. 2) There is evidence that the universe began in a massive explosion called the Big Bang around 13 billion years ago, and has been expanding ever since. 3) Key evidence for the Big Bang theory includes the Doppler effect, which shows that distant galaxies are moving away from us, and the discovery of cosmic microwave background radiation filling the universe.

Essential Cosmic Perspective 8th Edition Bennett Solutions Manual

KiaraMcguire

Star life cycles

West Hollow MS Ms. Gill

The document summarizes information about the formation and evolution of stars, including our sun. It discusses how stars are formed from collapsing gas clouds, and how stars of different masses will evolve differently. Lower mass stars like our sun will become red giants and end as white dwarfs, while very massive stars may explode as supernovae and form neutron stars or black holes. It also provides information about classifying and identifying properties of stars using tools like spectroscopy and star charts.

1272019 Homework 2httpssession.masteringphysics.comm.docx

drennanmicah

1/27/2019 Homework 2 https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=7008141 1/9 Homework 2 Due: 11:59pm on Friday, February 1, 2019 You will receive no credit for items you complete after the assignment is due. Grading Policy Jupiter in Motion Jupiter orbits the Sun at an average distance of 5.203 AU. Part A - What is the length of its year in Earth years? Answer to two decimal places. You did not open hints for this part. ANSWER: Motion of Mars Mars's orbit is rather eccentric. Part A - Does Mars move at a higher speed when it is farther away from the Sun or closer to it? Explain. You did not open hints for this part. ANSWER: Kepler's 3rd Law Part A - All of the following statements are true. Which one can be explained by Kepler’s third law? You did not open hints for this part. ANSWER: Tycho Brahe Part A - The great contribution of Tycho Brahe was to ANSWER: 3785 Character(s) remaining Essay answers are limited to about 500 words (3800 characters maximum, including spaces). (none provided) Mars moves faster in its orbit when it is closer to the Sun than when it is farther from the Sun. All the planets orbit the Sun in nearly the same plane. Earth is slightly closer to the Sun in January than in July. Venus orbits the Sun at a faster orbital speed than Earth. The Sun is not in the precise center of Saturn’s orbit. 1/27/2019 Homework 2 https://session.masteringphysics.com/myct/assignmentPrintView?assignmentID=7008141 2/9 The Greeks Part A - The ancient Greeks get a lot of attention for their contributions to science because ANSWER: Ellipses Part A - Which of the following statements about an ellipse is NOT true? ANSWER: Eccentricities Part A - When we say that a planet has a highly eccentric orbit, we mean that: ANSWER: Eris possess a metal nose discover four moons orbiting Jupiter, thereby lending strong support to the idea that Earth is not the center of the universe offer the first detailed model of a Sun-centered solar system, thereby beginning the process of overturning the Earth-centered model of the Greeks observe planetary positions with sufficient accuracy so that Kepler could later use the data to discover the laws of planetary motion discover that planets orbit the Sun in elliptical orbits with varying speed they were the first people to realize that Earth is a planet orbiting the Sun they were the only ancient culture that kept written records of their astronomical observations they were the first people known to try to explain nature with models based on reason and mathematics, without resort to the supernatural the books of every other culture were lost in the destruction of the library of Alexandria The semimajor axis of an ellipse is half the length of the longest line that you can draw across an ellipse. The focus of an ellipse is always located precisely at the center of the ellipse. An ellipse with a large eccentricity looks much more elongate.

Slides_Detecting_Exoplanets_with_Transit_v2.pptx

BakhytUshkempirov

Chapter 10 Tests

dlsupport

BigBang.pptx

JezzcelPiring

The Big Bang theory states that the universe began in a hot, dense state and has been expanding ever since. Key evidence includes the cosmic microwave background radiation and redshift of distant galaxies indicating an expanding universe. Dark energy and dark matter make up most of the universe and influence its expansion and structure formation. The Milky Way galaxy is a barred spiral galaxy containing over 100 billion stars located on an outer arm. Stars form constellations that change with the seasons and can be used for navigation.

Study Guide Game

Emily Hudak

The document is a study guide for an exam on Chapter 4 about stars and the Milky Way galaxy. It contains multiple choice questions about key concepts like the Milky Way being a spiral galaxy, astronomers using parallax to measure distance to stars, convection not being how hydrogen fuses into helium, and white dwarfs being the final stage of low-mass stars. The study guide emphasizes understanding mass determining a star's life cycle and convection versus fusion as common mistakes. It provides review of class demonstrations and diagrams about stellar evolution.

Stars from what part of the main sequence are likely to become black .pdf

arbaazrabs

Stars from what part of the main sequence are likely to become black holes? Explain your answer (You may need to look for additional information to answer this question) b)If you were to look up into the sky for a few hours, and see 100 stars (or take a picture of 100 stars making up a starfield), why would you see the particular stars that you see out of the billions of stars in the Universe\'? Include two main reasons (Thinking about magnitude might help you answer this question) C)Many variable stars are stars in the Yellow or Red Giant stages List at least two such categories of variable stars. Solution a) Most black holes form from the remnants of a large star that dies in a supernova explosion. (Smaller stars become dense neutron stars, which are not massive enough to trap light.) If the total mass of the star is large enough (about three times the mass of the Sun), it can be proven theoretically that no force can keep the star from collapsing under the influence of gravity. However, as the star collapses, a strange thing occurs. As the surface of the star nears an imaginary surface called the \"event horizon,\" time on the star slows relative to the time kept by observers far away. When the surface reaches the event horizon, time stands still, and the star can collapse no more - it is a frozen collapsing object. b) Whether we are able to see an object or not just depends only on the amount of light that is reaching us and is independent of its size. If you cannot see an object, it just means that the amount of light coming is not enough for your eye to discern it. It is true that the angular size of stars is extremely small and that is the reason why no telescope has ever taken a well resolved picture of a star. For us at the Earth, the atmosphere causes an angular blurring by scintillation (which is why stars twinkle) and smears their size to about 1 arcsecond (which is 1/3600 of a degree). Even for telescopes like Hubble which is above the Earth\'s atmosphere, the star\'s angular size is too small to be resolved. But remember that each star produces a lot of light which is more than enough for the eye to discern them. Hence we see stars; However they are too small; so we see them as points and not disks (as you would with planets). c) Variable stars may be either intrinsic or extrinsic. These subgroups themselves are further divided into specific types of variable stars that are usually named after their prototype. For example, dwarf novae are designated U Geminorum stars after the first recognized star in the class, U Geminorum..

Star Light, Star Bright

coebridges

This document provides a lesson plan for students to observe stars. The lesson introduces students to basic facts about stars like the sun and their sizes and temperatures. Students will use a workbook to record their observations of stars on a clear night, noting any unusually bright or colored stars. Afterwards, they will answer questions about their observations and discuss how stars' brightness and distance affect their appearance. The lesson encourages an extension where students research constellations and try identifying them in the night sky.

The brightness of stars as they appear from Earth is measured by ___.docx

todd541

The brightness of stars as they appear from Earth is measured by _______ magnitude. A. apparent B. relative C. light D. absolute 2. The idea that the universe is expanding was discovered in the late 1920s by A. Hertzsprung. B. Hubble. C. Doppler. D. Russell. 3. Which one of the following groups is in the proper order from smallest to largest? A. Mars, Jupiter, Pluto B. Saturn, Mercury, Earth C. Pluto, Jupiter, Moon D. Venus, Neptune, Saturn 4. An icy object moving through space in a highly eccentric orbit is called a A. meteorite. B. comet. C. meteor. D. meteoroid. 5. What type of telescope detects energy that's outside the visible spectrum? A. Refracting telescope B. Radio telescope C. Spectroscope D. Reflecting telescope 6. The fact that the position of the constellations seems to change throughout the year is evidence that A. the sun is rotating. B. Earth is rotating. C. Earth is revolving. D. the sun is revolving. 7. According to the three laws of planetary motion, planetary orbits are in the shape of a/an A. arc. B. ellipse. C. circle. D. rectangle. 8. What scientist first proposed that the sun is the center of the solar system? A. Kepler B. Brahe C. Ptolemy D. Copernicus 9. Which one of the following planets does not have rings surrounding it? A. Uranus B. Mars C. Jupiter D. Saturn 10. Which one of the following planets would you expect to have a rocky crust and a dense core? A. Venus B. Neptune C. Saturn D. Jupiter 11. Compared to Earth, Jupiter A. is much smaller. B. rotates more quickly. C. has a lower internal pressure. D. has no moon. 12. Regarding movement of planets, the three laws of planetary motion include all except which of the following? A. The farther a planet is from the sun, the longer it takes to orbit the sun. B. The distance between each planet and the sun is constant. C. When a planet is closer to the sun it moves faster than when it is farther away. D. Orbits are elliptical. 13. What two characteristics of a star are plotted on the Hertzsprung-Russell diagram? A. Rotation and age B. Brightness and age C. Brightness and temperature D. Rotation and temperature 14. An icy piece of rock or rock fragment moving through space is known as a A. meteor. B. meteorite. C. meteoroid. D. comet. 15. We see only one side of the moon from Earth because A. the other side of the moon isn't illuminated when it faces Earth. B. Earth's gravity holds the moon in place so it can't rotate. C. the moon rotates on its axis at the same rate at which it orbits Earth. D. tilt of Earth on its axis causes it to face the same side of the moon. 16. As the moon moves around Earth, a person on Earth doesn't always see the fully lit side of the moon. This phenomenon causes A. eclipses of the moon. B. phases of the moon. C. an increase in perigee. D. an increase in apogee. 17. The use of convex lenses to form an image is the method by which _______ telescopes work. A. refracting B. mirror C. reflecting D. optical 18. The asteroid belt is located betwee.

PHYSUICA.pptx

BobbyPabores1

The document contains a 10-question physical science review covering topics like: - Characteristics of pescatarian diets and the macromolecule found in seafood (protein) - Differences between transuranic elements and super heavy elements - Relative strengths of different intermolecular forces - The function of enzymes as catalysts in breaking down food - Evidence that supports the Big Bang theory, including the cosmic microwave background - How the distance between a source and observer affects frequency through the Doppler effect

Science Standard 5 ~

guestbf83e2

This document provides information and instructions for an activity where students observe stars at night and answer questions about them. It begins with definitions of stars and related terms. It then explains that stars are massive balls of plasma located in outer space, and discusses constellations. The activity instructions have students arrange to observe stars at night, then discuss what they know about the sun and why more stars are visible at night. Students are asked to observe and note the colors and brightness of different stars. Back in class, they discuss their observations in groups and brainstorm reasons for the variations in stars.

03 space

School

The document is a quiz about astronomy. It contains questions about the uses of telescopes, famous astronomers, parts of telescopes, and locations of telescopes in space. It asks students to work in pairs to complete the quiz, then check their answers. The questions cover topics like the purpose of telescopes, who invented the first telescope, parts of a traditional telescope, famous Uzbek astronomers, and the location of the Hubble telescope.

13 review clickers

Asma Said,PhD

This document contains multiple choice questions and answers about detecting exoplanets. It discusses how the Doppler shift of a star's spectrum can be used to detect planets by looking for periodic redshifting and blueshifting caused by the star's wobble in response to planetary orbits. It also addresses detecting transiting planets by measuring periodic dimming in a star's brightness as planets pass in front of it. Space missions are working to find smaller, Earth-sized planets using these detection methods.

13 review clickers

Asma Said,PhD

This document contains multiple choice questions and answers about detecting exoplanets. It discusses how the Doppler shift method detects planets by looking for periodic red-blue shifts in the spectrum of the star being orbited. Space telescopes are needed to image planets directly and detect transits, as a planet passing in front of its star will cause periodic dimming events in the star's brightness. Current missions aim to find smaller, Earth-sized planets using these detection methods.

elementary-activities-to-celebrate-us-science-fiction-day (1).pptx

Francis de Castro

This document provides information about stars and constellations. It begins with an opening prayer and then defines astronomy. It discusses the characteristics used to classify stars, including color, size, brightness, mass, and surface temperature. Red stars have the coolest temperatures while blue stars are hottest. Stars are mostly made of helium and hydrogen. Constellations are groups of stars that form imaginary patterns. Well-known constellations like Orion, Aquarius, and Cassiopeia are described. The document also discusses the pole star Polaris and how astronomers measure the distance to stars. In closing, it emphasizes that studying stars has helped humans navigate and track time.

Insert a function in cell D11 to display the ltem name based.pdf

In which of the situations shown AD will the observer rece.pdf

Recommended

Recommended

More Related Content

Similar to In which of the situations shown AD will the observer rece.pdf

Similar to In which of the situations shown AD will the observer rece.pdf (20)

More from adisainternational

More from adisainternational (20)

Recently uploaded

Recently uploaded (20)

In which of the situations shown AD will the observer rece.pdf