Announcements. Lab 15: Hubble’s Law Tiffany Pewett

Slides:

Advertisements

Similar presentations

Kinematics: What is velocity and acceleration?

Advertisements

Measuring to the nearest ½ cm or mm.

Analysis of a Distance vs. Time Graph

Warm Up… Solve each equation for y.

2.2 Linear Equations.

Really, just how important and significant are you…………?

Do your course evaluations. I will add 5 points on your final exam if you complete the evaluation.

Constant Velocity. Recap Fun With Cars Terms Scalar Distance Speed Vector Displacement Velocity.

Graphing The relationship between two variables can often be determined by organizing experimental data into a graph.

Star Properties studied so far… Period Mass Eccentricity Red shift Velocity Temperature (Wiens Law) Composition – which elements and how much of each Color.

2009 AP B Free Response #1 Lab Use Monster Pop-ups from Oriental Trading Company and clay. The height reached by the toy can be estimated visually but.

Speed vs. Time Graphs.

Lesson 4-4 Example Determine the slope of the function y = 5x – 2. Step 1Complete a function table for the equation.

Lesson 6-6 Example Example 2 Graph y = 3x + 2 and determine the slope of the line. 1.Complete a function table for the equation.

EXPANDING UNIVERSE. OLBERS PARADOX Olbers’ paradox “The night sky is dark.” This statement is called Olbers’ paradox, after astronomer who discussed.

Acceleration- Change in Velocity

Equation of a line.

Find the equation of the line that has... A B C D E F

Algebra – Linear Functions By the end of this lesson you will be able to identify and calculate the following: 1. Find 1. Find the gradient of a line from.

The Expanding Universe: Evidence for Acceleration 1.Review of Hubble’s Law 2.Excel Activity: Hubble’s Law with recent data 3.Modern interpretation of a.

Graphing Motion, Speed and Velocity. Graphs of Motion A Distance vs. time graph that is a straight line always means the object moves the same.

Ohio University - Lancaster Campus slide 1 of 17 Spring 2009 PSC 100 Hubble’s Law: The Age, Size, and Expansion of Our Universe.

Hubble’s Law.

Hubble’s Law Astrophysics Lesson 16.

= constant speed forward = no speed, stopped = constant speed; negative direction Time (s) Distance mDistance m.

Change in Velocity A nice an easy progression into something new.

A Study of the Correlation between Galactic Distance and Morphology Harry Gaebler and Rebecca Jensen- Clem.

Learning Objective To understand how Edwin Hubble provided evidence showing the relative scale of the Universe. Learning Outcome To be able to explain.

OBJECTIVE: USE THE SLOPE INTERCEPT FORM TO GRAPH A LINE Slope Intercept Form.

Motion in One Dimension. Displacement  x = x f - x i.

Hubble’s Law: Measuring the Age of the Universe Dr Lisa Jardine-Wright Cavendish Laboratory, University of Cambridge.

[ 실습 ] Hubble’s Law Hubble’s Law Edwin Hubble (1889 ~ 1953) * Period – Luminosity Relation of Cepheid Variable (Henrietta Leavitt, 1912)

1D Kinematics Equations and Problems. Velocity The rate at an object changes position relative to something stationary. X VT ÷ x ÷

Lab: Linear Motion Experimental Procedure:

Announcements Projects due in 2 ½ weeks!! On-campus observing rescheduled for July 16 th, this may move to the 15 th or 17 th depending on weather! Powerpoints:

Graphs of a falling object And you. Objective 1: Graph a position –vs- time graph for an object falling from a tall building for 10 seconds Calculate.

LINEAR EQUATIONS PART I

Aim: How do you construct a proper physics graph?

Lines that point down-hill have a negative slope.

Displacement-Time Graphs

Motion Graphs Position-Time (also called Distance-Time or Displacement-Time) d t At rest.

Lab: Linear Motion Experimental Procedure:

Bell Ringer List 5 things that all good graphs should have.

Slope of a Line (6.1).

y = m x Slope intercept Form Dependent variable

Graphing Linear Equations

LINEAR EQUATIONS PART I

Lesson 8: Graphing Multi-Variable Equations

Assignment #8: Due December 2

Using Slope-Intercept Form

Motion Table of Contents Describing Motion Speed and Velocity

Quick Graphs Using Slope-Intercept Form

Speed and Velocity Chapter 9 Section 2.

LINEAR EQUATIONS PART I

Edwin Hubble ( ).

Astronomy 105 Laboratory Lab 10.

Assignment #9: Due May 1 EXERCISE

SLOPE AND GRAPHING LINEAR EQUATIONS (B6, B7, B8)

Meaning of Slope for Equations, Graphs, and Tables

Example 1A: Graphing by Using Slope and y-intercept

4.3 Graphing Equations of Lines From Intercepts

Lesson 4.4 Objective: To graph a line on a coordinate plane only using the slope and the y-intercept. Essential Question: How can I graph an equation without.

Key Areas covered Hubble’s law shows the relationship between the recession velocity of a galaxy and its distance from us. Hubble’s law allows us to estimate.

Chapter 2: Kinematics in One Dimension

Find the y-intercept and slope

LINEAR EQUATIONS PART I

Write an Equation Given Two Points

The Equation of a Line Slope-Intercept Form.

Lab Extension Post-Lab

Ch 4.2 & 4.3 Slope-Intercept Method

Presentation transcript:

Announcements

Lab 15: Hubble’s Law Tiffany Pewett

Distance Ladder

Edwin Hubble

Redshift

Hubble’s Law

Hubble’s Constant

Goal of Lab Find distances and recessional velocities of galaxies. Determine Hubble’s Constant. Determine Age and Radius of the Universe! – Current known values?

Finding Velocities You first need to find your scale for the spectral images. Then measure the distance to the Calcium K & H lines to nearest ½ mm. Fill in the Table I using the appropriate equations. Note: Round your final velocities to nearest 1000!

Scale & Velocities Å Å

Velocities

Finding Distances Determine scale for galaxy images. Measure longest and shortest sides of galaxies and average them. Measure to edge of each galaxy. Fill in Table II using appropriate equations.

Scale & Distance

Plotting Carefully Plot all five of your data points. – Final Velocity vs. Distance. Use a ruler to draw a “best-fit” line starting at the origin (0,0) through your points.

Hubble’s Constant Hubble’s constant is the slope of the line you just drew. Slope= Rise ÷ Run Origin is 0,0 so you only need one point. Find a spot on your line that is on a grid cross- section. Find the y and x values here, you have your rise and your run!