Speed of light. A race to compare the speed of light to other things A quick comparison of how far things can go in 1 second. Start Fastest Athletes Cheetah.

Slides:

Advertisements

Similar presentations

S1 Science Planet Earth topic

Advertisements

The speed of light - NOTES The speed of light, written c, is c = 3.00 x 10 8 m/s, Nothing can travel faster than light, and no object can even travel that.

Light Years Grade 8 Unit 10.

The difference between sound and light They’re both waves, after all.

Astronomical Distances Distances in astronomy are huge The Moon is 240,000 miles away The Sun is 93, 000,000 miles away Neptune is 2,810,687,500 miles.

Electromagnetic Waves Light! Review of Waves. Mondays 5:30 - 7:00 pm NSC Room 118.

Our Place in the Universe (Chapter 1) The Structure and Size of the Universe.

Distances in Astronomy. Which unit would you use to measure your height? – Millimeters – Centimeters – Meters – Kilometers Talk with a partner about why.

REFRACTION!!!! The bending of light. Aaah! We said before that light travelled in a straight line, so why does this bending of light happen?!?!? It.

Distances in our Universe The universe is so large that we must use special units of measurement. Kilometers and miles just won’t cut it.

Astronomy 1002 Planets, Stars and Galaxies Welcome! Section 1 Mon. & Weds. 3:35- 4:50 Prof. Todd Adams Department of Physics Florida State University.

Light Mystical, magical What is light?  Light is a curious thing. It is...  the only thing you will ever be able to see  a wave with electric and.

Distances in Space Science 9. Using scientific notation Distances in space are very large We use scientific notation to represent very large and very.

Alyssa Hawras – aoh5295 Sam Fisher – sef5176 Julia Sickels – jns5224.

THE SPACE SHUTTLE. Shuttle Take Off T-31s ground computer system hands over to shuttle system T-16s sound suppression system soaks the launch pad with.

Waves A repeating movement or disturbance that transfers energy...

Topic: Light Years Essential Question: How do scientists use light years to measure distances in our universe?

Distances in Space This Mini Lesson Will Cover: What units do astronomers use to measure vast distances in space?

Stars!!!! Galaxies and the Universe too!. Stars are far away! The closest star to Earth is the sun. The next closest is Proxima Centauri If you can travel.

Waves Part 1: Kinds of Waves What is a Wave?  A wave is a disturbance in space/time that moves energy in a straight line from one place to another.

Parts of waves. 2 Parts Transverse Wave  1) Crest – high point of wave  2) Trough – low point of wave.

Our Place in Space Where we are 1. We live on Earth 2 Welcome to Earf!

In a vacuum (void of molecules), light travels at 3.0 x 10 8 m/s, Light travels at different speeds in different materials or mediums. while in water.

Space Space is HUGE! Distances in Space Astronomical Units Light Years

Motion Maddie, Nathan, Colby, Aaron, Joseph. State and Explain Major Concepts - Speed is the rate at which distance is covered; it is measured in units.

Reflection Lab What is the relationship between the angle in and the angle out for light on a mirror?

Refraction & Lenses Chapter 18. Refraction of Light n Look at the surface of a swimming pool n Objects look distorted n Light bends as it goes from one.

the change of direction of a ray of light as it passes obliquely from one medium into another of different transmission speed.

The EARTH is 93 Million Miles from the SUN.

Refraction of Light When can light “bend”?.

Our Place in the Universe. 1.1 Our Modern View of the Universe What is our place in the universe? How did we come to be? How can we know what the universe.

Measuring the Distance to the Stars

Part 1: Waves & Wave Properties. Hilo, Hawaii, 1960, 6700 miles from an Earthquake in Chile How did an Earthquake in Chile cause such damage in Hawaii?

Astronomic Distances. Solar system- planets and other objects like comets and asteroids that travel around the sun Background.

Exploring our Solar System part 2. Who wants to go into space? What do you think?

The “space” between objects in space is so large that normal units of measurement don’t work; for example the sun is 93,000,000,000,000 miles away from.

When light travels from one material to another it usually changes direction The bending of light that occurs at the borderline of two materials is called.

Refraction Chapter 12 (p ). Refraction Refraction: The bending or change in direction of light when it travels at an angle from one medium into.

Refraction Contents: Index of refraction Whiteboard.

Have you ever wondered why a straw appears to be disconnected when placed in water?

Hints and examples. When the crest of one wave meets the crest of another wave and the amplitude of the wave becomes bigger. This also happens when the.

Space is really big! How do scientists measure distances in space?

Key Areas covered The temperature of stellar objects is related to the distribution of emitted radiation over a wide range of wavelengths. The wavelength.

The Scientific explanation for the forming of the universe.

PROPERTIES OF WAVES FREQUENCY & WAVE SPEED. REVIEW A wave is a disturbance that transfers energy from place to place. In science, energy is defined as.

Speed of light Chapter 27.2 Notes. The Speed of Light It was not known whether light travels instantaneously or with finite speed until the late 1600s.

Happy Tuesday! Get ready for warm up #4 Get out paper for notes. Title them: “Snell’s Law and Refraction” Essential Question: What is Snell’s Law?

8.5CD Electromagnetic Spectrum and Light Years The student is expected to explore how different wavelengths of the electromagnetic spectrum such as light.

Chapter 26: Sound. What causes sound? The vibration of matter.

Chapter 1.  Astronomy is the study of the stars and planets  The key to this course is to understand how we are a part of the vast universe.

Distances in Space. Interplanetary Distances Compared to how far away the stars are, separation of the planets is a relatively small distance. Examples:

Refraction And you.

The Big Bang Theory.

Order the cards to show the cosmic terms in increasing size

The wider universe.

Refraction when light passes from one material (aka medium) to another, it bends because the speed of light travels at different speeds in different mediums.

Comparing Energy.

Distances in Astronomy

Distances in Space.

Minds On Read Mysteries Beyond the Planets (Pg. 353) and summarize the article in one paragraph.

What type of measuring unit would we need for distances across space?

Electromagnetic Waves

Distances in Space.

Refraction The bending or change in direction of light when it travels from one medium into another.

Presentation transcript:

Speed of light

A race to compare the speed of light to other things A quick comparison of how far things can go in 1 second. Start Fastest Athletes Cheetah Fastball Drag racer Bullet Supersonic Jet Crack of thunder Flash of lightning 10 m 25 m 45 m

Most are still going Drag Racer 175 m Bullet (still going) Supersonic Jet (still going) Crack of thunder Flash of lightning We will continue these throughout the presentation! They are roughly to scale.

Astronomical Distances Light takes 8 minutes to get from the Sun to the Earth. It takes 4 years to get here from the next nearest star aside from the sun, Proxima Centauri which is 4 light years away. Light year-The distance light travels in one year 9.5 x10 15 m (a really big distance)

Space travel problems Since we can’t even get close to the speed of light deep space travel would take extreme amounts of time. crack of thunder (340 m)

Looking into the past Every time you look at the stars you are looking at the distant past. If you see a star that was 100 light years away blow up (supernova) it actually blew up 100 years ago. It just took the light that long to get to you.

Speed of light in things other than a vacuum Whenever light hits a medium it slows it down. The more dense the material the slower light can travel. Therefore light tends to travel faster in a gas, and slowest in a solid. It travels fastest in a vacuum (nothing)

Speed of light in different substances Bullet (780 m) Vacuum x 10 8 m/s Air x 10 8 m/s Water2.26 x 10 8 m/s Glass1.97 x 10 8 m/s Diamond1.24 x 10 8 m/s

It may slow down but… It is still unbelievably fast compared to everything else. You can not travel faster than the speed of light. Several interesting things happen when you get close. Supersonic Jet (900 m)

How far will that light go If I had 15,000 more slides just like this one, I could cover the distance light would travel (300,000,000 m)