The Expanding 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

P1.5.4 Red-shift AQA GCSE Science A. There are two main pieces of evidence for the Big Bang: 1.The expansion of the universe 2. Cosmic microwave background.

Agenda Read Unit 8 Distance to galaxies (review) Redshift Hubble’s Law The Big Bang.

Star Systems and Galaxies Galaxies and the Big Bang Theory.

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.

The Big Bang! Chapter 2.2. Origin of the Universe Big Bang Big Bang occurred 15 billion years ago occurred 15 billion years ago model for the beginning.

Theory on the Formation of the Universe

THE BIG BANG THEORY. WHO REMEMBERS DOPPLER SHIFT? The Doppler Effect is the perceived change in wavelength of a wave that is emitted from a source that.

IP Light and the doppler effect © Oxford University Press 2011 Light and the doppler effect.

THEORIES OF UNIVERSE FORMATION. Studying Space Cosmology – the study of the origin, structure, and future of the universe Astronomers study planets, stars,

The Milky Way What type of galaxy is our Milky Way?? A. Spiral B. elliptical C. irregular A.

The Big Bang Theory Not this one…. The Theory The Big Bang describes how: – a massive explosion created the universe – the cooling and expansion of.

The “Big Bang” Theory Birth of the Universe. The Big Bang Theory First and foremost – THIS IS A THEORY! – It is up to you whether you want to believe.

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

Abundance of Light Elements - Spectral Analysis of Stars & Galaxies shows that there is a large % of: Hydrogen and Helium (99.9 %) present in the universe.

Red Shift – Expanding Universe 5 a day. 1. If a star or galaxy is moving away from us, its wavelength will shift which way? 2. If a star or galaxy is.

THE BIG BANG THEORY The Expanding Universe. Review Human demonstration.

Astronomy Study of objects in space such as the Sun, stars, planets, comets, gas, & galaxies. *Also, the Earth’s place in the universe. Universe = everything.

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.

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

The Expanding Universe  When light or sound moves toward or away from an observer, its frequency/wavelength changes (Known as Doppler effect)  Can be.

Theories of how the Universe Began

Option D. 3. Universe was born around 13.8 billion years ago in process called Big Bang In the beginning, all matter & energy in the entire universe was.

The Big Bang Theory.

Doppler Effect and Redshift

Add to table of Contents:

Observing the Universe

The big bang theory.

Evidence for The Big Bang

Big Bang Theory.

Theories of how the Universe Began

Moving stars and changing colors

Title: 30.1 Galaxies and The Universe

Formation of the Universe

Big Bang Theory Assessment

The Big Bang! ESCI 518 Fall 2004.

Mr. Magner DHSHS Earth Science

THE EXPANDING UNIVERSE

Topic 3: Earth in the Universe

Galaxies and Stars Galaxies – billions of star groups

Astronomy Study of objects in space such as the Sun, stars, planets, comets, gas, & galaxies. *Also, the Earth’s place in the universe. Universe = everything.

Gravity & The Big Bang Theory

Discovery of the Expanding Universe

Universe & Galaxies.

The big bang theory.

History of the Universe

Red Shift *The stretching of wavelengths as objects move away from each other. *Light waves shifting toward longer wavelengths *Means the object is moving.

Evidence for the big bang

Origin of the Universe Bell work: Pick up handouts

Doppler Effect - By Jemma and Ruby

The 3 proofs of the Big Bang

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.

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.

WHEN YOU WISH UPON A STAR

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.

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 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.

Add to table of Contents:

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.

Theories of Universe Formation

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.

Discovery of the Expanding Universe

Asteroids, meteors, meteorites, comets

Science Notes: Stnd 14 Date Standard 14: 8.ESS1.1 The Big Bang

What observed feature of the universe motivated scientists to propose the “Big Bang” theory? There is lots of debris in space, as would be expected from.

Light: Electromagnetic spectrum & Doppler Shift

Presentation transcript:

The Expanding Universe 1929 – Edwin Hubble found that the universe is expanding Estimated distances, relative brightness, Doppler red shifts

Hubble’s Law: galaxies are moving away from us (red-shift) at a speed that is proportional to their distance the more distant the galaxy, the greater the velocity (moving away at faster speeds)

Doppler Effect wavelength changes if an object is moving toward or away from you pitch gets higher Whitney Houston !!! BASS !!! pitch gets lower

Doppler shifts from stars Doppler Effect Song by Astrocapella

Doppler shifts from stars Draw the spectrum of lithium as it is “red-shifted”

Cosmic Background Radiation (CBR) The hypothesis that the universe has always been expanding (since the “Big Bang”) predicted (1948) that radiation produced from the first moment of expansion would permeate the universe. In 1965 this radiation was discovered In 2003 astronomers studying the CBR determined the universe is 13.7 billion years old

Cosmic Speed Limit Speed of light = 300,000 km/s Light-year = the distance light travels in one year (9,500,000,000,000 km) The 2nd nearest star is 4.3 light years away (Alpha Centauri = triple-star system)