Light: Electromagnetic spectrum & Doppler Shift

Slides:

Advertisements

Similar presentations

The Big Bang Theory Unit: Space Birth of a Theory Hypothesis: Educated Guess. Theory: Hypothesis that’s supported by consistent results & experimentation.

Advertisements

Stars, starlight AND The Big Bang. OUTCOME QUESTION(S): S1-4-06: How do astronomers measure the great distances in the universe? S1-4-07: What is the.

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.

Bell Ringer 8/25 You may write this week’s bell ringers on the same paper as last week’s bell ringers, just be sure to include the correct DATE!! In your.

Science 9: Unit E: Space Exploration Topic 3: Spectroscopy and the Doppler Shift.

Rainbows from Space. Astronomer’s Tools Telescopes Telescopes –On Earth or in Earth orbit Cameras Cameras Prisms (spectroscope) Prisms (spectroscope)

Section 7.3. Hubble’s Ideas...  Edwin Hubble ( )  An American astronomer  One of the first to study galaxies  Two of his major findings changed.

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.

Astronomy Big Idea: The sun is one of billions of stars in one of billions of galaxies in the universe.

HOW DID THE UNIVERSE COME TO BE??? The Big Bang Theory Cosmologists believe that 14 billion years ago, the universe was extremely compact, small, and.

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.

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.

Stars, starlight AND The Big Bang. OUTCOME QUESTION(S): S1-4-07: What is the evidence for the Big Bang Theory? Vocabulary & People Electromagnetic spectrumDoppler.

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.

10.1 Spectroscopy and the Big Bang. Electromagnetic Spectrum.

AIM: How was the Universe Created? Do Now: Which planet has the shortest day? Which planet rotates on its side? Which planet has the longest rotation?

What is Electromagnetic Energy?

How do we really know what's out there?

The Spectroscope.

Add to table of Contents:

Earth Science With Mr. Thomas.

Newton studies the Sun’s spectrum

Big Bang Theory The majority of the information in this PowerPoint is used unedited for educational purposes and was taken from

The big bang theory.

Big Bang Theory.

Spectroscopy Lecture.

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.

Prepare your scantron: Setup:

Key Terms: Big Bang Theory: the most commonly accepted theory explain the creation of the universe Red shift: stating that everything in the universe.

Big Bang Theory Assessment

Formation of the Universe

THE EXPANDING UNIVERSE

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.

How do we really know what's out there?

Gravity & The Big Bang Theory

The Expanding Universe

Origin of the Universe.

Emission & Absorption of Light

The Big Bang Model The most widely accepted theory TODAY on the formation of the universe  …Subject to change!

Stars Notes Ch. 28.

Stars, starlight AND Light Information. Stars, starlight AND Light Information.

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

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

ELECTROMAGNETIC SPECTRUM

Prepare your scantron:

How do we really know what's out there?

Unit III Part 1: Weathering and Erosion

GALAXIES OF STARS & OUR UNIVERSE

Doppler Effect - By Jemma and Ruby

GALAXIES OF STARS & OUR UNIVERSE

The 3 proofs of the Big Bang

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.

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 Spectroscope: New Meanings in Light

Stars, starlight AND The Big Bang.

Add to table of Contents:

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.

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.

Asteroids, meteors, meteorites, comets

A Closer Look at Visible Light

Topic 3 – Part III The Doppler Effect

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.

Presentation transcript:

Light: Electromagnetic spectrum & Doppler Shift

The Electromagnetic Spectrum

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

Spectrum: light separated into component wavelengths Droplets of water, diffraction grating, and spectroscopes all act like a PRISM to separate different wavelengths (colors) of light

Incandescence: glowing from heat Blue = hottest Red=coolest

Types of spectra Sunlight, light bulbs Sunlight that has traveled through our atmosphere Hot gas

Doppler Effect Pitch: higher Light: bluer Pitch: Lower Light: redder

Doppler shifts from stars