Title: 30.1 Galaxies and The Universe

Slides:

Advertisements

Similar presentations

David - Doppler He is known for the principle he proposed he first proposed in concerning the colored light of double stars in He hypothesized that.

Advertisements

Origin of the Universe. Origin and Age of the Universe Humans have observed celestial objects for thousands of years contemplating their place in the.

Light and Atoms Chapter 3.

The Doppler Effect Refers to the frequency change in waves as objects move toward you or away from you. As things move toward you – waves become compressed,

As the police car approaches, the sound waves from its siren are compressed towards the observer. The intervals between waves diminish, which.

The Doppler Effect Thursday, October 26, First, a review from yesterday…

What is the Universe Like? Chapter 31. The universe is everything…all matter and all energy The universe is everything…all matter and all energy The universe.

What can electromagnetic waves tell us about the movement of planets, stars, and galaxies?

Before the bell rings, in your notes, write out the important aspects of a correctly designed experiment. Make sure to include a description of your variable.

The Big Bang & The Origin of Atoms Initial Observations In the 1920’s, Edwin Hubble who was making telescopic observations of galaxies outside the Milkyway.

The Doppler Effect.

Electromagnetic Spectrum

Origin of the Universe. Origin and Age of the Universe Humans have observed celestial objects for thousands of years contemplating their place in the.

Origins of the Universe (Glencoe Chapter 26-4, pages )

What is the DOPPLER EFFECT? Doppler and Sound  When sound waves are made they spread out evenly in all directions like ripples on a pool of water 

Aim: How does light provide evidence of the universe’s composition? I. Light – a form of electromagnetic radiation. A. electromagnetic radiation – energy.

How do we really know what's out there? Space is a pretty big place and, after all, we've never been farther from earth than our moon. How do we know.

How do we really know what's out there? Space is a pretty big place and, after all, we've never been farther from earth than our moon. How do we know what.

Waves. The time it takes for one wavelength to pass is called the period. The number of wavelengths passing at a given time is called frequency.

The Electromagnetic Spectrum in our Universe. Background info. ★ Everything astronomers know about the universe comes from studying light from distant.

How do we know our Universe is expanding?. Throughout our universe, light is bursting from stars, bouncing off planets, diving into black holes, wandering.

An Expanding Universe Redshift, Blueshift and the Doppler Effect.

Redshift Hubble’s Law. Redshift - absorption spectra.

Formation of the Universe The Big Bang Theory. The Big Bang All matter & energy in the universe was compressed into a tiny volume 13.7 billion years ago,

What do we know about the universe?

10.1 The Early Universe Until 100 years ago, scientists believed nothing ever changed in outer space. a)Using powerful telescopes, astronomers like Edwin.

The Doppler Effect The sound of a police car siren changes as it moves past you. The pitch of the siren seems to change. Ahead of the car, the sound waves.

EVIDENCE SUPPORTING THE EXPANDING UNIVERSE The Electromagnetic Spectrum and The Doppler Effect.

Add to table of Contents: Star Life diagramPg. 76 Life Cycle of a StarPg. 77 Spectral fingerprintPg. 78 Electromagnetic spectrumPg. 79 Big Bang LabPg.

Test Prompt Pre-Assessment What do you know about the Big Bang Theory? Jan 14.

Wednesday September 5, 2012 (Lab – Hubble’s Law – The Expanding Universe - Day 2)

The Motion of the Universe. What Keeps Celestial Bodies in Orbit?  The First Person to attempt to answer this question was Isaac Newton  Formulated.

Doppler Effect and Redshift

Mr. Z’s “Waves” Unit.

Evidence for The Big Bang

III.) Doppler Effect: an observed change in the frequency of a wave when the source or observer is moving A) Pitch of a sound (how high or low it is) is.

Describe as fully as you can the difference between the two sounds.

Emission Spectra Be sure you have something warm to wear, we may go outside for a few minutes later on if there’s time (sticker) 1. What color of visible.

Doppler Effect.

Moving stars and changing colors

Formation of the Universe

Big Bang Theory Assessment

Topic 3: Earth in the Universe

The Expanding Universe

How do scientists know what stars and planets are made of?

History of the Universe

Do Now Heading: The Doppler Effect

Which color of visible light has the shortest wavelength?

Evidence for the big bang

ELECTROMAGNETIC SPECTRUM

1. Doppler Effect Change in frequency of a wave due to relative motion between source and observer. A sound wave frequency change is noticed as a change.

Origin of the Universe Bell work: Pick up handouts

Electromagnetic Radiation

How do we really know what's out there?

Doppler Effect - By Jemma and Ruby

Star Light The spectrum of light a star emits can tell us what type of atom is present both inside the core and in its atmosphere. The pattern of dark.

WHEN YOU WISH UPON A STAR

1. Review: what are the parameters of a wave?

Spectral analysis of starlight can tell us about:

Absorption lines of a galaxy shift toward the blue end of the spectrum when it moves toward Earth. The lines shift to the red end of the spectrum when.

Key Areas covered The Doppler effect is observed in sound and light

Add to table of Contents:

Before the bell rings, in your notes, write out the important aspects of a correctly designed experiment. Make sure to include a description of your variable.

Properties of Waves Part 2.

Unit E – Space Exploration

Unit 4: Astronomy Lesson 1: The Early Universe

Topic 3 – Part III The Doppler Effect

Presentation transcript:

Title: 30.1 Galaxies and The Universe The Expanding Universe: Redshift

Objectives Students will be able to explain how red shift implies an expanding universe.

Word of the Day Doppler Effect: A change in the observed frequency of a wave, as of sound or light, occurring when the source and observer are in motion relative to each other, with the frequency increasing when the source and observer approach each other and decreasing when they move apart.

The Expanding Universe Page 873 1929: Edwin Hubble discovers the universe is expanding. How? Noticed that finger prints of elements in stars were not in correct place. They were there, but they had been shifted.

The Expanding Universe Page 873 Redshift: The increase in wave length of radiation emitted by a celestial body as a result of the Doppler Effect.

Visible Color Spectrum The finger prints of elements within celestial objects that are moving away from us get shifted towards red.