Our Solar System and Beyond.  How many of you have travelled to other countries?  Some distances from Montreal:  New York 534.4 km New York 534.4 km.

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Presentation transcript:

Our Solar System and Beyond

 How many of you have travelled to other countries?  Some distances from Montreal:  New York km New York km  Los Angeles km Los Angeles km  Kingston, Jamaica km Kingston, Jamaica km  London, England km London, England km  Tel Aviv, Israel km Tel Aviv, Israel km  Cape Town, South Africa kmCape Town, South Africa km  Beijing, China km Beijing, China km  Sydney, Austrailia km Sydney, Austrailia  Circumference of the equator : km

 We will be dealing with distances MUCH greater than that!  To get an idea of the scale, here is a video:  logy-and-astronomy/universe-scale-topic/scale- small-large-tutorial/v/scale-of-the-large logy-and-astronomy/universe-scale-topic/scale- small-large-tutorial/v/scale-of-the-large

 Turn to page 281 in your textbook.  To measure the distance between objects within our solar system, we use astronomical units (AU).  The AU is calculated as the mean distance between the Earth and the sun.  1 AU = km (or approximately 150 million km)

Why is drawing our solar system to the proper scale difficult? Bill Nye knows the answer!

 For even greater distances, we use light years (ly)  In space, light travels at km per second.  In a year, light travels km or approximately billion km. (the calculation is on p 282 in your textbook.)

 Read pages 281 – 287 in your textbook, as well as section 2.3 on p  Once complete, do questions 5 to 10 on pages 293 – 294. Hint: use scientific notation for the number calculations. See page 281 for help.