How many light years old are you?

Slides:

Advertisements

Similar presentations

S1 Science Planet Earth topic

Advertisements

of Earth (in the center)

How many centimeters are there in one kilometer?

How many light years old are you?

Light Years Grade 8 Unit 10.

The Metric System - BIG Okay, so you have gotten a look at the metric world of the small and very small, but now it is time to look at the metric world.

Distances in Space.

OUR COSMIC ADDRESS Each of us has an address. Ours is: The Denver Museum of Nature and Science 2001 Colorado Blvd. Denver, Colorado But what.

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

U2: Astronomy - Measuring Space Distances FLIP LESSON.

What is Astronomy? A Study Of:. What is Astronomy? A Study Of:

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 has really big numbers

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

Astronomy Astronomy = study of celestial objects and phenomena outside Earth’s atmosphere Includes galaxies, stars, planets, moons, cosmic radiation, etc.

Astronomical Distances. Distances between objects in outer space can be so vast that to measure them in terrestrial units would require huge numbers.

Light Years Away.. Questions 1-10 (1 point each) Question 11 (2 points) Total Points (12 Points)

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

Objectives: Learn what units scientists measure distances in space. Define and use an astronomical unit to measure distances in space. Define and use a.

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

Here and Now Chapter 1. Where are You? To find our place among the stars, we will zoom out from a familiar scene, to the largest scales in the universe.

Size and Scale Sizes and distances in astronomy are extremely large… in fact beyond comprehension Scientists (and the world) use the metric system Units.

 Solar System: 4.6 billion years old  Earth: 4.5 billion years old  Universe: 13.8 billion years.

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

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

Measuring the Very Large.  For distance that is.  The Kilometer  What exactly *is* a kilometer?  1000 meters  We walk at about 5 km/hr, or

The EARTH is 93 Million Miles from the SUN.

Part 1: Distances in Space

Numero 1 The sun is about 150 million kilometers from earth. How long does it take light from the sun to reach earth? (The speed of light is 3x10 8 m/s.)

Measuring the Distance to the Stars

Horizons PowerPoint Presentations by Markus Böttcher Michael A. Seeds Brooks/Cole – Thomson Learning 9 th Edition.

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

WE WOULD LIKE TO INTRODUCE THE STUDENTS ABOUT OUR PROJECT WHICH DEALS WITH FAMILY OF STARS & THEIR COLOURS.

Making Sense of the Universe

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

The Universe & Galaxies Key Point (Std 8-4.9): Recall the Sun’s position in the universe, the shapes and composition of galaxies, and the distance measurement.

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

Goal to understand the scale of the universe

EARTH’S PLACE IN THE UNIVERSE

The Big Bang Theory.

Order the cards to show the cosmic terms in increasing size

The wider universe.

Observing and exploring space

Characteristics of Stars

Our Place In The Universe

Distance in Space Light years.

One light year is equal to the distance traveled by light in one year (through empty space). One light year = 1 ly = 6 trillion miles = 9.5 trillion.

The Sun and Light Years.

The Metric System - BIG Okay, so you have gotten a look at the metric world of the small and very small, but now it is time to look at the metric world.

Scientific notation.

Distances in Space.

and that pesky v=d/t formula

What is a Light Year?

Bell Ringer 1 – Take out your notebook

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

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

Smallest to Largest ? Universe Solar System Galaxy.

Distances in Space.

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

Middle School Physical Science Space Introduction – Grade 6-7

The Universe Going the distance.

Distances in Space.

MEASURING ASTRONOMICAL DISTANCES

Measuring Distances in Space

What is a Light Year?

myastrologybook

Presentation transcript:

How many light years old are you?

So If light years aren’t a measurement of time, then what do they measure?

What is a Light Year? A light year is the distance light travels trough space in one year! Light travels at a speed of 186,000 miles per second, which means it can travel around the Earth 7 times in a second! Figure out how many miles light can travel in a light minute, light hour, light day, light week, light month and light year.

What is a Light Year? One Light year = 5,879,000,000,000 miles or 10,000,000,000,000 km. So light travels 5,879,000,000,000, miles or 10,000,000,000 km in one year. The approximate conversion from light years to km is light years x 10,000,000,000,000 km

Why measure distances in light years? What unit of measurement would you use to mesure the distance around the world? Kilometers or milimeters? Explain! For the same reason light years are used to measure the distances between stars instead of miles/kilometers because interstellar distances are so vast.

Putting light years into perspective When astronomers spot an explosion on the sun, they’re not seeing it in real time; the light from the explosion takes 8 minutes to get to Earth.

Putting light years into perspective At 55 miles-per-hour, it would take over 50 million years to get to Proxima Centauri! You can never see Proxima Centauri as it is now, only as it was 4 years ago.

Putting light years into perspective The Andromeda Galaxy is the most distant object you can readily see with the naked eye. The light your eye is receiving left the galaxy about 2 million years ago. If the galaxy disappeared by some mysterious means, the people on Earth wouldn’t know for another 2 million years

Putting light years into perspective When you look out into space, you are looking back in time. There is absolutely no way to know exactly what an object out in space looks like right now!

Why is it currently impossible to travel outside of our Milky Way Galaxy?